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Dillenburg M, Smith J, Wagner CR. The Many Faces of Histidine Triad Nucleotide Binding Protein 1 (HINT1). ACS Pharmacol Transl Sci 2023; 6:1310-1322. [PMID: 37854629 PMCID: PMC10580397 DOI: 10.1021/acsptsci.3c00079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Indexed: 10/20/2023]
Abstract
The histidine triad nucleotide binding protein 1 (HINT1) is a nucleoside phosphoramidase that has garnered interest due to its widespread expression and participation in a broad range of biological processes. Herein, we discuss the role of HINT1 as a regulator of several CNS functions, tumor suppressor, and mast cell activator via its interactions with multiple G-protein-coupled receptors and transcription factors. Importantly, altered HINT1 expression and mutation are connected to the progression of multiple disease states, including several neuropsychiatric disorders, peripheral neuropathy, and tumorigenesis. Additionally, due to its involvement in the activation of several clinically used phosphoramidate prodrugs, tremendous efforts have been made to better understand the interactions behind nucleoside binding and phosphoramidate hydrolysis by HINT1. We detail the substrate specificity and catalytic mechanism of HINT1 hydrolysis, while highlighting the structural biology behind these efforts. The aim of this review is to summarize the multitude of biological and pharmacological functions in which HINT1 participates while addressing the areas of need for future research.
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Affiliation(s)
- Maxwell Dillenburg
- Department of Medicinal Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Jacob Smith
- Department of Medicinal Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Carston R. Wagner
- Department of Medicinal Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
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2
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Yao J, Miao Y, Zhu L, Wan M, Lu Y, Tang W. Histidine trinucleotide binding protein 2: from basic science to clinical implications. Biochem Pharmacol 2023; 212:115527. [PMID: 37004779 DOI: 10.1016/j.bcp.2023.115527] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Revised: 03/27/2023] [Accepted: 03/27/2023] [Indexed: 04/03/2023]
Abstract
Histidine triad nucleotide-binding protein 2 (HINT2) is a dimeric protein that belongs to the histidine triad protein superfamily, predominantly expressed in the liver, pancreas, and adrenal gland, and localised to the mitochondrion. HINT2 binds nucleotides and catalyses the hydrolysis of nucleotidyl substrates. Moreover, HINT2 has been identified as a key regulator of multiple biological processes, including mitochondria-dependent apoptosis, mitochondrial protein acetylation, and steroidogenesis. Genetic manipulation has provided new insights into the physiological roles of HINT2 in several processes, such as inhibition of cancer progression, regulation of hepatic lipid metabolism, and protective effects on the cardiovascular system. The current review outlines the background and functions of HINT2. In addition, it summarises research progress on the correlation between HINT2 and human malignancies, hepatic metabolic diseases, and cardiovascular diseases, with an attempt to provide new research directions emerging in this field and to unveil the therapeutic value of HINT2 as a target in the combat of human diseases.
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3
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Jiang N, Vazquez Do Campo R, Kazamel M. Case report: A novel homozygous histidine triad nucleotide-binding protein 1 mutation featuring distal hereditary motor-predominant neuropathy with rimmed vacuoles. Front Neurol 2023; 14:1007051. [PMID: 36846110 PMCID: PMC9943687 DOI: 10.3389/fneur.2023.1007051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Accepted: 01/17/2023] [Indexed: 02/08/2023] Open
Abstract
Introduction Recessive mutations in the gene encoding the histidine triad nucleotide-binding protein 1 (HINT1) are associated with axonal motor-predominant Charcot-Marie-Tooth (CMT) disease with neuromyotonia. A total of 24 HINT1 gene mutations have been reported so far. Some of these cases had mild to moderate elevations of creatinine kinase with no earlier reports of muscle biopsy findings in these cases. In this study, we describe a patient with axonal motor-predominant neuropathy and myopathy with rimmed vacuoles, likely due to a novel HINT1 gene mutation. Case report A 35-year-old African American man presented with insidious onset and progressive symmetric distal leg weakness followed by hand muscle atrophy and weakness since the age of 25. He had no muscle cramps or sensory complaints. His 38-year-old brother developed similar symptoms beginning in his early 30 s. On neurologic examination, the patient had distal weakness and atrophy in all limbs, claw hands, pes cavus, absent Achilles reflexes, and normal sensory examination. Electrodiagnostic studies revealed absent/reduced compound motor action potential amplitudes distally with normal sensory responses with no neuromyotonia. His sural nerve biopsy showed a chronic non-specific axonal neuropathy, and a biopsy of the tibialis anterior muscle demonstrated myopathic features and several muscle fibers harboring rimmed vacuoles without inflammation in addition to chronic denervation changes. A homozygous variant, p.I63N (c.188T > A), in the HINT1 gene was found in both brothers. Conclusion We describe a novel, likely pathogenic, HINT1 pI63N (c.188T > A) homozygous variant associated with hereditary axonal motor-predominant neuropathy without neuromyotonia in two African American brothers. The presence of rimmed vacuoles on muscle biopsy raises the possibility that mutations in the HINT1 gene may also cause myopathy.
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Affiliation(s)
- Nan Jiang
- Division of Neuromuscular Disease, Department of Neurology, The University of Alabama at Birmingham, Birmingham, AL, United States
| | - Rocio Vazquez Do Campo
- Division of Neuromuscular Disease, Department of Neurology, The University of Alabama at Birmingham, Birmingham, AL, United States
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Roy B, Navarro V, Peyrottes S. Prodrugs of Nucleoside 5'-Monophosphate Analogues: Overview of the Recent Literature Concerning their Synthesis and Applications. Curr Med Chem 2023; 30:1256-1303. [PMID: 36093825 DOI: 10.2174/0929867329666220909122820] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Revised: 07/21/2022] [Accepted: 08/02/2022] [Indexed: 11/22/2022]
Abstract
Nucleoside analogues are widely used as anti-infectious and antitumoral agents. However, their clinical use may face limitations associated with their physicochemical properties, pharmacokinetic parameters, and/or their peculiar mechanisms of action. Indeed, once inside the cells, nucleoside analogues require to be metabolized into their corresponding (poly-)phosphorylated derivatives, mediated by cellular and/or viral kinases, in order to interfere with nucleic acid biosynthesis. Within this activation process, the first-phosphorylation step is often the limiting one and to overcome this limitation, numerous prodrug approaches have been proposed. Herein, we will focus on recent literature data (from 2015 and onwards) related to new prodrug strategies, the development of original synthetic approaches and novel applications of nucleotide prodrugs (namely pronucleotides) leading to the intracellular delivery of 5'-monophosphate nucleoside analogues.
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Affiliation(s)
- Béatrice Roy
- Team Nucleosides & Phosphorylated Effectors, Institute for Biomolecules Max Mousseron (IBMM), University of Montpellier, Route de Mende, 34293 Montpellier, France
| | - Valentin Navarro
- Team Nucleosides & Phosphorylated Effectors, Institute for Biomolecules Max Mousseron (IBMM), University of Montpellier, Route de Mende, 34293 Montpellier, France
| | - Suzanne Peyrottes
- Team Nucleosides & Phosphorylated Effectors, Institute for Biomolecules Max Mousseron (IBMM), University of Montpellier, Route de Mende, 34293 Montpellier, France
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5
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Strom A, Shah R, Dolot R, Rogers MS, Tong CL, Wang D, Xia Y, Lipscomb JD, Wagner CR. Dynamic Long-Range Interactions Influence Substrate Binding and Catalysis by Human Histidine Triad Nucleotide-Binding Proteins (HINTs), Key Regulators of Multiple Cellular Processes and Activators of Antiviral ProTides. Biochemistry 2022; 61:2648-2661. [PMID: 36398895 PMCID: PMC9854251 DOI: 10.1021/acs.biochem.2c00506] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Human histidine triad nucleotide-binding (hHINT) proteins catalyze nucleotide phosphoramidase and acyl-phosphatase reactions that are essential for the activation of antiviral proTides, such as Sofosbuvir and Remdesivir. hHINT1 and hHINT2 are highly homologous but exhibit disparate roles as regulators of opioid tolerance (hHINT1) and mitochondrial activity (hHINT2). NMR studies of hHINT1 reveal a pair of dynamic surface residues (Q62, E100), which gate a conserved water channel leading to the active site 13 Å away. hHINT2 crystal structures identify analogous residues (R99, D137) and water channel. hHINT1 Q62 variants significantly alter the steady-state kcat and Km for turnover of the fluorescent substrate (TpAd), while stopped-flow kinetics indicate that KD also changes. hHINT2, like hHINT1, exhibits a burst phase of adenylation, monitored by fluorescent tryptamine release, prior to rate-limiting hydrolysis and nucleotide release. hHINT2 exhibits a much smaller burst-phase amplitude than hHINT1, which is further diminished in hHINT2 R99Q. Kinetic simulations suggest that amplitude variations can be accounted for by a variable fluorescent yield of the E·S complex from changes in the environment of bound TpAd. Isothermal titration calorimetry measurements of inhibitor binding show that these hHINT variants also alter the thermodynamic binding profile. We propose that these altered surface residues engender long-range dynamic changes that affect the orientation of bound ligands, altering the thermodynamic and kinetic characteristics of hHINT active site function. Thus, studies of the cellular roles and proTide activation potential by hHINTs should consider the importance of long-range interactions and possible protein binding surfaces far from the active site.
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Affiliation(s)
- Alexander Strom
- Department of Medicinal Chemistry University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Rachit Shah
- Department of Medicinal Chemistry University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Rafal Dolot
- Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Sienkiewicza 112, 90-363 Lodz, Poland
| | - Melanie S. Rogers
- Department of Biochemistry, Molecular Biology and Biophysics, University of Minnesota, Minneapolis, Minnesota 55455, United States,Center for Metals in Biocatalysis, University of Minnesota, Minneapolis, Minnesota 55455,United States
| | - Cher-Ling Tong
- Department of Biochemistry, Molecular Biology and Biophysics, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - David Wang
- Department of Medicinal Chemistry University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Youlin Xia
- Department of Structural Biology, St. Jude’s Research Hospital, Memphis, Tennessee 38105, United States
| | - John D. Lipscomb
- Department of Biochemistry, Molecular Biology and Biophysics, University of Minnesota, Minneapolis, Minnesota 55455, United States,Center for Metals in Biocatalysis, University of Minnesota, Minneapolis, Minnesota 55455,United States
| | - Carston R. Wagner
- Department of Medicinal Chemistry University of Minnesota, Minneapolis, Minnesota 55455, United States,Address correspondence to: Carston R. Wagner, University of Minnesota, Department of Medicinal Chemistry, 2231 6th Street S.E., Cancer & Cardiovascular Research Building, Minneapolis, Minnesota 55455, USA,
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Popovych LV, Shatillo AV, Zelinska NB, Tavokina LV, Gorodna OV, Livshits GB, Sirokha DA, Livshits LA. The Combination of Chromosomal Reorganization and Inherited Point Mutation Has Led to the Development of a Rare Clinical Phenotype in a Patient with Disorder of Sex Differentiation and Neuromuscular Pathology. CYTOL GENET+ 2022. [DOI: 10.3103/s0095452722050097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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7
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Krakowiak A, Czernek L, Pichlak M, Kaczmarek R. Intracellular HINT1-Assisted Hydrolysis of Nucleoside 5'- O-Selenophosphate Leads to the Release of Hydrogen Selenide That Exhibits Toxic Effects in Human Cervical Cancer Cells. Int J Mol Sci 2022; 23:ijms23020607. [PMID: 35054788 PMCID: PMC8775712 DOI: 10.3390/ijms23020607] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Revised: 12/31/2021] [Accepted: 01/02/2022] [Indexed: 12/20/2022] Open
Abstract
In this study, we present a new selenium derivative, 2′-deoxyguanosine-5′-O-selenophosphate (dGMPSe), synthesized by the oxathiaphospholane method and adapted here for the synthesis of nucleoside selenophosphates. Using biochemical assays (HPLC- and fluorescence-based), we investigated the enzymatic activity of HINT1 towards dGMPSe in comparison with the corresponding thiophosphate nucleoside, i.e., dGMPS. Both substrates showed similar kcat and a small difference in Km, and during the reactions the release of reducing agents such as H2Se and H2S were expected and detected. MTT viability assay and microscopic analysis showed that dGMPSe was toxic to HeLa cancer cells, and this cytotoxicity was due to the release of H2Se. The release of H2Se or H2S in the living cells after administration of dGMPSe and/or dGMPS, both without carrier and by electroporation, was observed using a fluorescence assay, as previously for NMPS. In conclusion, our comparative experiments with dGMPSe and dGMPS indicate that the HINT1 enzyme is capable of converting (d)NMPSe to (d)NMP and H2Se, both in vitro and intracellularly. Since the anticancer activity of various selenium compounds depends on the formation of hydrogen selenide, the actual inducer of cell death, we propose that selenium-containing nucleotides represent another option as novel compounds with anticancer therapeutic potential.
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Cortés-Montero E, Rodríguez-Muñoz M, Sánchez-Blázquez P, Garzón-Niño J. Human HINT1 Mutant Proteins that Cause Axonal Motor Neuropathy Exhibit Anomalous Interactions with Partner Proteins. Mol Neurobiol 2021; 58:1834-1845. [PMID: 33404983 DOI: 10.1007/s12035-020-02265-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Accepted: 12/16/2020] [Indexed: 11/25/2022]
Abstract
The 14 kDa histidine triad nucleotide-binding protein 1 (HINT1) is critical to maintain the normal function of motor neurons. Thus, a series of human HINT1 mutants cause autosomal recessive axonal neuropathy with neuromyotonia. HINT1 establishes a series of regulatory interactions with signaling proteins, some of which are enriched in motor neurons, such as the type 1 sigma receptor or intracellular domain (ICD) of transmembrane teneurin 1, both of which are also implicated in motor disturbances. In a previous study, we reported the capacity of HINT1 to remove the small ubiquitin-like modifier (SUMO) from a series of substrates and the influence of HINT1 mutants on this activity. We now report how human HINT1 mutations affect the interaction of HINT1 with the regulator of its SUMOylase activity, calcium-activated calmodulin, and its substrate SUMO. Moreover, HINT1 mutants exhibited anomalous interactions with G protein coupled receptors, such as the mu-opioid, and with glutamate N-methyl-D-aspartate receptors as well. Additionally, these HINT1 mutants showed impaired associations with transcriptional regulators such as the regulator of G protein signaling Z2 protein and the cleaved N-terminal ICD of teneurin 1. Thus, the altered enzymatic activity of human HINT1 mutants and their anomalous interactions with partner proteins may disrupt signaling pathways essential to the normal function of human motor neurons.
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Affiliation(s)
- Elsa Cortés-Montero
- Neuropharmacology, Cajal Institute, Department of Translational Neuroscience, CSIC, Madrid, Spain
| | - María Rodríguez-Muñoz
- Neuropharmacology, Cajal Institute, Department of Translational Neuroscience, CSIC, Madrid, Spain
| | - Pilar Sánchez-Blázquez
- Neuropharmacology, Cajal Institute, Department of Translational Neuroscience, CSIC, Madrid, Spain
| | - Javier Garzón-Niño
- Neuropharmacology, Cajal Institute, Department of Translational Neuroscience, CSIC, Madrid, Spain.
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9
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Beijer D, Baets J. The expanding genetic landscape of hereditary motor neuropathies. Brain 2021; 143:3540-3563. [PMID: 33210134 DOI: 10.1093/brain/awaa311] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Revised: 07/15/2020] [Accepted: 07/27/2020] [Indexed: 12/12/2022] Open
Abstract
Hereditary motor neuropathies are clinically and genetically diverse disorders characterized by length-dependent axonal degeneration of lower motor neurons. Although currently as many as 26 causal genes are known, there is considerable missing heritability compared to other inherited neuropathies such as Charcot-Marie-Tooth disease. Intriguingly, this genetic landscape spans a discrete number of key biological processes within the peripheral nerve. Also, in terms of underlying pathophysiology, hereditary motor neuropathies show striking overlap with several other neuromuscular and neurological disorders. In this review, we provide a current overview of the genetic spectrum of hereditary motor neuropathies highlighting recent reports of novel genes and mutations or recent discoveries in the underlying disease mechanisms. In addition, we link hereditary motor neuropathies with various related disorders by addressing the main affected pathways of disease divided into five major processes: axonal transport, tRNA aminoacylation, RNA metabolism and DNA integrity, ion channels and transporters and endoplasmic reticulum.
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Affiliation(s)
- Danique Beijer
- Translational Neurosciences, Faculty of Medicine and Health Sciences, University of Antwerp, Belgium.,Laboratory of Neuromuscular Pathology, Institute Born-Bunge, University of Antwerp, Belgium
| | - Jonathan Baets
- Translational Neurosciences, Faculty of Medicine and Health Sciences, University of Antwerp, Belgium.,Laboratory of Neuromuscular Pathology, Institute Born-Bunge, University of Antwerp, Belgium.,Neuromuscular Reference Centre, Department of Neurology, Antwerp University Hospital, Belgium
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10
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Strom A, Shah R, Wagner CR. "Switching On" Enzyme Substrate Specificity Analysis with a Fluorescent Competitive Inhibitor. Biochemistry 2021; 60:440-450. [PMID: 33513008 DOI: 10.1021/acs.biochem.0c00954] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Enzymatically driven change to the spectroscopic properties of a chemical substrate or product has been a linchpin in the development of continuous enzyme kinetics assays. These assays inherently necessitate substrates or products that naturally comply with the constraints of the spectroscopic technique being used, or they require structural changes to the molecules involved to make them observable. Here we demonstrate a new analytical kinetics approach with enzyme histidine triad nucleotide binding protein 1 (HINT1) that allows us to extract both useful kcat values and a rank-ordered list of substrate specificities without the need to track substrates or products directly. Instead, this is accomplished indirectly using a "switch on" competitive inhibitor that fluoresces maximally only when bound to the HINT1 enzyme active site. Kinetic information is extracted from the duration of the diminished fluorescence when the monitorable inhibitor-bound enzyme is challenged with saturating concentrations of a nonfluorescent substrate. We refer to the loss of fluorescence, while the substrate competes for the fluorescent probe in the active site, as the substrate's residence transit time (RTT). The ability to assess kcat values and substrate specificity by monitoring the RTTs for a set of substrates with a competitive "switch on" inhibitor should be broadly applicable to other enzymatic reactions in which the "switch on" inhibitor has sufficient binding affinity over the enzymatic product.
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Affiliation(s)
- Alexander Strom
- Department of Medicinal Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Rachit Shah
- Department of Medicinal Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Carston R Wagner
- Department of Medicinal Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
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11
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Abstract
The Escherichia coli microcin C (McC) and related compounds are potent Trojan horse peptide-nucleotide antibiotics. The peptide part facilitates transport into sensitive cells. Inside the cell, the peptide part is degraded by nonspecific peptidases releasing an aspartamide-adenylate containing a phosphoramide bond. This nonhydrolyzable compound inhibits aspartyl-tRNA synthetase. In addition to the efficient export of McC outside the producing cells, special mechanisms have evolved to avoid self-toxicity caused by the degradation of the peptide part inside the producers. Here, we report that histidine-triad (HIT) hydrolases encoded in biosynthetic clusters of some McC homologs or by standalone genes confer resistance to McC-like compounds by hydrolyzing the phosphoramide bond in toxic aspartamide-adenosine, rendering them inactive.IMPORTANCE Uncovering the mechanisms of resistance is a required step for countering the looming antibiotic resistance crisis. In this communication, we show how universally conserved histidine-triad hydrolases provide resistance to microcin C, a potent inhibitor of bacterial protein synthesis.
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12
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Strom A, Tong CL, Wagner CR. Histidine triad nucleotide-binding proteins HINT1 and HINT2 share similar substrate specificities and little affinity for the signaling dinucleotide Ap4A. FEBS Lett 2020; 594:1497-1505. [PMID: 31990367 DOI: 10.1002/1873-3468.13745] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2019] [Revised: 12/10/2019] [Accepted: 12/18/2019] [Indexed: 11/07/2022]
Abstract
Human histidine triad nucleotide-binding protein 2 (hHINT2) is an important player in human mitochondrial bioenergetics, but little is known about its catalytic capabilities or its nucleotide phosphoramidate prodrug (proTide)-activating activity akin to the cytosolic isozyme hHINT1. Here, a similar substrate specificity profile (kcat /Km ) for model phosphoramidate substrates was found for hHINT2 but with higher kcat and Km values when compared with hHINT1. A broader pH range for maximum catalytic activity was determined for hHINT2 (pK1 = 6.76 ± 0.16, pK2 = 8.41 ± 0.07). In addition, the known hHINT1-microphthalmia-inducing transcription factor-regulating molecule Ap4 A was found to have no detectable binding to HINT1 nor HINT2 by isothermal titration calorimetry. These results demonstrate that despite differences in their sequence and localization, HINT1 and HINT2 have similar nucleotide substrate specificities, which should be considered in future proTide design and in studies of their natural function.
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Affiliation(s)
- Alexander Strom
- Department of Medicinal Chemistry, University of Minnesota, Minneapolis, MN, USA
| | - Cher Ling Tong
- Department of Biochemistry Molecular Biology and Biophysics, University of Minnesota, Minneapolis, MN, USA
| | - Carston R Wagner
- Department of Medicinal Chemistry, University of Minnesota, Minneapolis, MN, USA
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13
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Shah RM, Peterson C, Strom A, Dillenburg M, Finzel B, Kitto KF, Fairbanks C, Wilcox G, Wagner CR. Inhibition of HINT1 Modulates Spinal Nociception and NMDA Evoked Behavior in Mice. ACS Chem Neurosci 2019; 10:4385-4393. [PMID: 31503445 DOI: 10.1021/acschemneuro.9b00432] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
The interactions between the mu-opioid (MOR) and N-methyl-d-aspartate receptor (NMDAR) constitute an area of intense investigation because of their contributions to maladaptive neuroplasticity. Recent evidence suggests that their association requires the involvement of histidine triad nucleotide-binding protein (HINT1) with the enzyme's active site being critical in its regulatory role. Since it is known that spinal blockade of NMDA receptors prevents the development of opioid analgesic tolerance, we hypothesized that spinal inhibition of the HINT1 enzyme may similarly inhibit opioid tolerance. To address these questions, we evaluated novel HINT1 active-site inhibitors in two models of NMDAR and MOR interaction, namely, MOR inhibition of spinal NMDA activation and acute endomorphin-2 tolerance. These studies revealed that while the tryptamine carbamate of guanosine inhibitor, TrpGc, blocked both the development of opioid tolerance and the inhibitory effect of opioids on NMDA activation of the NMDA receptor, acyl-sulfamate analogues could only block the latter. Thermodynamic binding and X-ray crystallographic studies suggested that there are key differences between the bound HINT1-inhibitor surfaces that may be responsible for their differential ability to probe the ability of HINT1 to regulate cross talk between the mu-opioid receptor and NMDA receptor in the spinal cord.
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14
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Yu J, Liu Z, Liang Y, Luo F, Zhang J, Tian C, Motzik A, Zheng M, Kang J, Zhong G, Liu C, Fang P, Guo M, Razin E, Wang J. Second messenger Ap 4A polymerizes target protein HINT1 to transduce signals in FcεRI-activated mast cells. Nat Commun 2019; 10:4664. [PMID: 31604935 PMCID: PMC6789022 DOI: 10.1038/s41467-019-12710-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Accepted: 09/25/2019] [Indexed: 02/01/2023] Open
Abstract
Signal transduction systems enable organisms to monitor their external environments and accordingly adjust the cellular processes. In mast cells, the second messenger Ap4A binds to the histidine triad nucleotide-binding protein 1 (HINT1), disrupts its interaction with the microphthalmia-associated transcription factor (MITF), and eventually activates the transcription of genes downstream of MITF in response to immunostimulation. How the HINT1 protein recognizes and is regulated by Ap4A remain unclear. Here, using eight crystal structures, biochemical experiments, negative stain electron microscopy, and cellular experiments, we report that Ap4A specifically polymerizes HINT1 in solution and in activated rat basophilic leukemia cells. The polymerization interface overlaps with the area on HINT1 for MITF interaction, suggesting a possible competitive mechanism to release MITF for transcriptional activation. The mechanism depends precisely on the length of the phosphodiester linkage of Ap4A. These results highlight a direct polymerization signaling mechanism by the second messenger.
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Affiliation(s)
- Jing Yu
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, China
| | - Zaizhou Liu
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, China
| | - Yuanyuan Liang
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, China
| | - Feng Luo
- Interdisciplinary Research Center on Biology and Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, 201210, China
| | - Jie Zhang
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, China
| | - Cuiping Tian
- iHuman Institute, ShanghaiTech University, Shanghai, 201210, China
| | - Alex Motzik
- Department of Biochemistry and Molecular Biology, Institute for Medical Research Israel-Canada, Hebrew University Medical School, Jerusalem, 91120, Israel
| | - Mengmeng Zheng
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, China
| | - Jingwu Kang
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, China
| | - Guisheng Zhong
- iHuman Institute, ShanghaiTech University, Shanghai, 201210, China
| | - Cong Liu
- Interdisciplinary Research Center on Biology and Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, 201210, China
| | - Pengfei Fang
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, China
| | - Min Guo
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, China
- Kangma BioTech, Co., Ltd, 1131 Cailun Road, Shanghai, 201203, China
| | - Ehud Razin
- Department of Biochemistry and Molecular Biology, Institute for Medical Research Israel-Canada, Hebrew University Medical School, Jerusalem, 91120, Israel.
- NUS-HUJ-CREATE Cellular and Molecular Mechanisms of Inflammation Program, Department of Microbiology and Immunology, National University of Singapore, Singapore, 117597, Singapore.
| | - Jing Wang
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, China.
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15
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Cortés-Montero E, Rodríguez-Muñoz M, Sánchez-Blázquez P, Garzón J. The Axonal Motor Neuropathy-Related HINT1 Protein Is a Zinc- and Calmodulin-Regulated Cysteine SUMO Protease. Antioxid Redox Signal 2019; 31:503-520. [PMID: 31088288 PMCID: PMC6648240 DOI: 10.1089/ars.2019.7724] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Aims: Histidine triad nucleotide-binding protein 1 (HINT1) exhibits proapoptotic and tumor-suppressive activity. HINT1 binds to transcription factors such as teneurin1 and to the regulator of G protein signaling 17 (RGS) (Z2) protein, which incorporates the small ubiquitin-like modifier (SUMO), and is implicated in several types of cancer. HINT1 interacts with proteins such as PKCγ and Raf-1 through zinc ions provided by the cysteine-rich domain of RGSZ2 and the coupled neural nitric oxide synthase (nNOS). Recently, a series of HINT1 mutants have been reported to cause human autosomal recessive axonal neuropathy with neuromyotonia (ARAN-NM). However, the specific alteration in the function of HINT1 induced by these mutants remains to be elucidated. Because sumoylation modifies protein association and transcriptional regulation, we investigated whether HINT1 exhibits zinc- and redox-regulated sumoylase activity, which may be altered in those mutants. Results: HINT1 exhibits cysteine protease activity to remove SUMO from a variety of signaling proteins. HINT1 sumoylase activity is blocked by zinc, and it is released by nitric oxide or calcium-activated calmodulin (CaM). HINT1 contains a SUMO-interacting motif (110-116 HIHLHVL) and the catalytic triad Cys84-Asp87-His114 in the C-terminal region. Thus, zinc probably provided by the RGSZ2-nNOS complex may bind to Cys84 to block HINT1 isopeptidase activity. Innovation: To date, HINT1 is the only sumoylase that is regulated by two alternate pathways, redox- and calcium-activated CaM. Conclusion: The 15 human HINT1 mutants reported to cause ARAN-NM exhibited altered sumoylase activity, which may contribute to the onset of this human motor disease.
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Affiliation(s)
- Elsa Cortés-Montero
- Neuropharmacology, Instituto Cajal, Consejo Superior de Investigaciones Científicas (CSIC), Madrid, Spain
| | - María Rodríguez-Muñoz
- Neuropharmacology, Instituto Cajal, Consejo Superior de Investigaciones Científicas (CSIC), Madrid, Spain
| | - Pilar Sánchez-Blázquez
- Neuropharmacology, Instituto Cajal, Consejo Superior de Investigaciones Científicas (CSIC), Madrid, Spain
| | - Javier Garzón
- Neuropharmacology, Instituto Cajal, Consejo Superior de Investigaciones Científicas (CSIC), Madrid, Spain
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16
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Munier M, Tritsch D, Lièvremont D, Rohmer M, Grosdemange-Billiard C. Synthesis and biological evaluation of aryl phosphoramidate prodrugs of fosfoxacin and its derivatives. Bioorg Chem 2019; 89:103012. [PMID: 31174039 DOI: 10.1016/j.bioorg.2019.103012] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2018] [Revised: 05/22/2019] [Accepted: 05/23/2019] [Indexed: 12/26/2022]
Abstract
Aryl phosphoramidate prodrugs of fosfoxacin derivatives 15a-b and 8a-b were synthesized and investigated for their ability to target bacteria. No growth inhibition was observed neither for Mycobacterium smegmatis nor for Escherichia coli on solid medium, demonstrating the absence of release of the active compounds in the bacterial cells. Investigation of the stability of the prodrugs and their multienzymatic cleavage in abiotic and biotic conditions showed that the use of aryl phosphoramidate prodrug approach to deliver non-nucleotides compounds is not obvious and might not be appropriate for an antimicrobial drug.
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Affiliation(s)
- Mathilde Munier
- Laboratoire Chimie et Biochimie de Molécules Bioactives - Université de Strasbourg/CNRS, UMR 7177, Institut Le Bel, 4 rue Blaise Pascal, 67081 Strasbourg, France
| | - Denis Tritsch
- Laboratoire Chimie et Biochimie de Molécules Bioactives - Université de Strasbourg/CNRS, UMR 7177, Institut Le Bel, 4 rue Blaise Pascal, 67081 Strasbourg, France
| | - Didier Lièvremont
- Laboratoire Chimie et Biochimie de Molécules Bioactives - Université de Strasbourg/CNRS, UMR 7177, Institut Le Bel, 4 rue Blaise Pascal, 67081 Strasbourg, France
| | - Michel Rohmer
- Laboratoire Chimie et Biochimie de Molécules Bioactives - Université de Strasbourg/CNRS, UMR 7177, Institut Le Bel, 4 rue Blaise Pascal, 67081 Strasbourg, France
| | - Catherine Grosdemange-Billiard
- Laboratoire Chimie et Biochimie de Molécules Bioactives - Université de Strasbourg/CNRS, UMR 7177, Institut Le Bel, 4 rue Blaise Pascal, 67081 Strasbourg, France.
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17
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Krakowiak A, Piotrzkowska D, Kocoń-Rębowska B, Kaczmarek R, Maciaszek A. The role of the Hint1 protein in the metabolism of phosphorothioate oligonucleotides drugs and prodrugs, and the release of H 2S under cellular conditions. Biochem Pharmacol 2019; 163:250-259. [PMID: 30772266 DOI: 10.1016/j.bcp.2019.02.018] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2018] [Accepted: 02/13/2019] [Indexed: 12/29/2022]
Abstract
Phosphorothioate oligonucleotides (PS-oligos) containing sulfur atom attached in a nonbridging position to the phosphorus atom at one or more internucleotide bond(s) are often used in medicinal applications. Their hydrolysis in cellular media proceeds mainly from the 3'-end, resulting in the appearance of nucleoside 5'-O-phosphorothioates ((d)NMPS), whose further metabolism is poorly understood. We hypothesize that the enzyme responsible for (d)NMPS catabolism could be Hint1, an enzyme that belongs to the histidine triad (HIT) superfamily and is present in all organisms. We previously found that (d)NMPS were desulfurated in vitro to yield (d)NMP and H2S in a Hint1-assisted reaction. Here, we demonstrate that AMPS/GMPS/dGMPS introduced into HeLa/A549 cells are intracellularly converted into AMP/GMP/dGMP and H2S. The level of the released H2S was relative to the concentration of the compounds used and the reaction time. Using RNAi technology, we have shown decreased levels of AMPS/GMPS desulfuration in HeLa/A549 cells with reduced Hint1 levels. Finally, after transfection of a short Rp-d(APSAPSA) oligomer into HeLa cells, the release of H2S was observed. These results suggest that the metabolic pathway of PS-oligos includes hydrolysis into (d)NMPS (by cellular nucleases) followed by Hint1-promoted conversion of the resulting (d)NMPS into (d)NMP accompanied by H2S elimination. Our observations may be also important for possible medicinal applications of (d)NMPS because H2S is a gasotransmitter involved in many physiological and pathological processes.
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Affiliation(s)
- Agnieszka Krakowiak
- Department of Bioorganic Chemistry, Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Lodz 91-063, Poland.
| | - Danuta Piotrzkowska
- Department of Bioorganic Chemistry, Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Lodz 91-063, Poland
| | - Beata Kocoń-Rębowska
- Department of Bioorganic Chemistry, Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Lodz 91-063, Poland
| | - Renata Kaczmarek
- Department of Bioorganic Chemistry, Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Lodz 91-063, Poland
| | - Anna Maciaszek
- Department of Bioorganic Chemistry, Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Lodz 91-063, Poland
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18
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Jung A, Yun JS, Kim S, Kim SR, Shin M, Cho DH, Choi KS, Chang JH. Crystal Structure of Histidine Triad Nucleotide-Binding Protein from the Pathogenic Fungus Candida albicans. Mol Cells 2019; 42:56-66. [PMID: 30622225 PMCID: PMC6354057 DOI: 10.14348/molcells.2018.0377] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2018] [Revised: 11/05/2018] [Accepted: 11/14/2018] [Indexed: 12/19/2022] Open
Abstract
Histidine triad nucleotide-binding protein (HINT) is a member of the histidine triad (HIT) superfamily, which has hydrolase activity owing to a histidine triad motif. The HIT superfamily can be divided to five classes with functions in galactose metabolism, DNA repair, and tumor suppression. HINTs are highly conserved from archaea to humans and function as tumor suppressors, translation regulators, and neuropathy inhibitors. Although the structures of HINT proteins from various species have been reported, limited structural information is available for fungal species. Here, to elucidate the structural features and functional diversity of HINTs, we determined the crystal structure of HINT from the pathogenic fungus Candida albicans (CaHINT) in complex with zinc ions at a resolution of 2.5 Å. Based on structural comparisons, the monomer of CaHINT overlaid best with HINT protein from the protozoal species Leishmania major. Additionally, structural comparisons with human HINT revealed an additional helix at the C-terminus of CaHINT. Interestingly, the extended C-terminal helix interacted with the N-terminal loop (α1-β1) and with the α3 helix, which appeared to stabilize the dimerization of CaHINT. In the C-terminal region, structural and sequence comparisons showed strong relationships among 19 diverse species from archea to humans, suggesting early separation in the course of evolution. Further studies are required to address the functional significance of variations in the C-terminal region. This structural analysis of CaHINT provided important insights into the molecular aspects of evolution within the HIT superfamily.
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Affiliation(s)
- Ahjin Jung
- Department of Biology Education, Kyungpook National University, Daegu 41566,
Korea
| | - Ji-Sook Yun
- Department of Biology Education, Kyungpook National University, Daegu 41566,
Korea
| | - Shinae Kim
- Department of Biology Education, Kyungpook National University, Daegu 41566,
Korea
| | - Sang Ryong Kim
- School of Life Sciences, BK21 Plus KNU Creative BioResearch Group, Kyungpook National University, Daegu 41566,
Korea
| | - Minsang Shin
- Department of Microbiology, School of Medicine, Kyungpook National University, Daegu 41566,
Korea
| | - Dong Hyung Cho
- School of Life Sciences, BK21 Plus KNU Creative BioResearch Group, Kyungpook National University, Daegu 41566,
Korea
| | - Kwang Shik Choi
- School of Life Sciences, BK21 Plus KNU Creative BioResearch Group, Kyungpook National University, Daegu 41566,
Korea
- Research Institute for Dokdo and Ulleungdo Island, Kyungpook National University, Daegu 41566,
Korea
- Research Institute for Phylogenomics and Evolution, Kyungpook National University, Daegu 41566,
Korea
| | - Jeong Ho Chang
- Department of Biology Education, Kyungpook National University, Daegu 41566,
Korea
- Research Institute for Phylogenomics and Evolution, Kyungpook National University, Daegu 41566,
Korea
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19
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Shah RM, Maize KM, West HT, Strom AM, Finzel BC, Wagner CR. Structure and Functional Characterization of Human Histidine Triad Nucleotide-Binding Protein 1 Mutations Associated with Inherited Axonal Neuropathy with Neuromyotonia. J Mol Biol 2018; 430:2709-2721. [PMID: 29787766 DOI: 10.1016/j.jmb.2018.05.028] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2018] [Revised: 05/15/2018] [Accepted: 05/15/2018] [Indexed: 11/30/2022]
Abstract
Inherited peripheral neuropathies are a group of neurodegenerative disorders that clinically affect 1 in 2500 individuals. Recently, genetic mutations in human histidine nucleotide-binding protein 1 (hHint1) have been strongly and most frequently associated with patients suffering from axonal neuropathy with neuromyotonia. However, the correlation between the impact of these mutations on the hHint1 structure, enzymatic activity and in vivo function has remained ambiguous. Here, we provide detailed biochemical characterization of a set of these hHint1 mutations. Our findings indicate that half of the mutations (R37P, G93D and W123*) resulted in a destabilization of the dimeric state and a significant decrease in catalytic activity and HINT1 inhibitor binding affinity. The H112N mutant was found to be dimeric, but devoid of catalytic activity, due to the loss of the catalytically essential histidine; nevertheless, it exhibited high affinity to AMP and a HINT1 inhibitor. In contrast to the active-site mutants, the catalytic activity and dimeric structure of the surface mutants, C84R and G89V, were found to be similar to the wild-type enzyme. Taken together, our results suggest that the pathophysiology of inherited axonal neuropathy with neuromyotonia can be induced by conversion of HINT1 from a homodimer to monomer, by modification of select surface residues or by a significant reduction of the enzyme's catalytic efficiency.
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Affiliation(s)
- Rachit M Shah
- Department of Medicinal Chemistry, University of Minnesota, Minneapolis, MN 55455, USA
| | - Kimberly M Maize
- Department of Medicinal Chemistry, University of Minnesota, Minneapolis, MN 55455, USA
| | - Harrison T West
- Department of Medicinal Chemistry, University of Minnesota, Minneapolis, MN 55455, USA
| | - Alexander M Strom
- Department of Medicinal Chemistry, University of Minnesota, Minneapolis, MN 55455, USA
| | - Barry C Finzel
- Department of Medicinal Chemistry, University of Minnesota, Minneapolis, MN 55455, USA
| | - Carston R Wagner
- Department of Medicinal Chemistry, University of Minnesota, Minneapolis, MN 55455, USA; Department of Chemistry, University of Minnesota, Minneapolis, MN 55455, USA.
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20
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Shah R, Zhou A, Wagner CR. Switch-on fluorescent/FRET probes to study human histidine triad nucleotide binding protein 1 (hHint1), a novel target for opioid tolerance and neuropathic pain. Org Biomol Chem 2018; 15:10230-10237. [PMID: 29177353 DOI: 10.1039/c7ob02472j] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Histidine Triad Nucleotide Binding Protein 1 (Hint1) has emerged to be an important post-synaptic protein associated with a variety of central nervous system disorders such as pain, addiction, and schizophrenia. Recently, inhibition of histidine nucleotide binding protein 1 (Hint1) with a small nucleoside inhibitor has shown promise as a new therapeutic strategy for the treatment of neuropathic pain. Herein, we describe the first rationally designed small molecule switch-on probes with dual fluorescence and FRET properties to study Hint1. Two non-natural fluorescent nucleosides with a fluorescent lifetime of 20 and 25 ns were each coupled through a linker to the indole ring, i.e. probes 7 and 8. Both probes were found to be water soluble and quenched intramolecularly via photoinduced electron transfer (PET) resulting in minimal background fluorescence. Upon incubating with Hint1, compound 7 and 8 exhibited a 40- and 16-fold increase in the fluorescence intensity compared to the control. Compounds 7 and 8 bind Hint1 with a dissociation constant of 0.121 ± 0.02 and 2.2 ± 0.36 μM, respectively. We demonstrate that probe 8 exhibits a switch-on FRET property with an active site tryptophan residue (W123). We show the utility of probes in performing quantitative ligand displacement studies, as well as in selective detection of Hint1 in the cell lysates. These probes should be useful for studying the dynamics of the active site, as well as for the development of fluorescence lifetime based high throughput screening assay to identify novel inhibitors for Hint1 in future.
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Affiliation(s)
- Rachit Shah
- Department of Medicinal Chemistry University of Minnesota, USA.
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21
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Shah R, Maize KM, Zhou X, Finzel BC, Wagner CR. Caught before Released: Structural Mapping of the Reaction Trajectory for the Sofosbuvir Activating Enzyme, Human Histidine Triad Nucleotide Binding Protein 1 (hHint1). Biochemistry 2017; 56:3559-3570. [PMID: 28691797 DOI: 10.1021/acs.biochem.7b00148] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Human histidine triad nucleotide binding protein 1 (hHint1) is classified as an efficient nucleoside phosphoramidase and acyl-adenosine monophosphate hydrolase. Human Hint1 has been shown to be essential for the metabolic activation of nucleotide antiviral pronucleotides (i.e., proTides), such as the FDA approved hepatitis C drug, sofosbuvir. The active site of hHint1 comprises an ensemble of strictly conserved histidines, including nucleophilic His112. To structurally investigate the mechanism of hHint1 catalysis, we have designed and prepared nucleoside thiophosphoramidate substrates that are able to capture the transiently formed nucleotidylated-His112 intermediate (E*) using time-dependent crystallography. Utilizing a catalytically inactive hHint1 His112Asn enzyme variant and wild-type enzyme, the enzyme-substrate (ES1) and product (EP2) complexes were also cocrystallized, respectively, thus providing a structural map of the reaction trajectory. On the basis of these observations and the mechanistic necessity of proton transfers, proton inventory studies were carried out. Although we cannot completely exclude the possibility of more than one proton in flight, the results of these studies were consistent with the transfer of a single proton during the formation of the intermediate. Interestingly, structural analysis revealed that the critical proton transfers required for intermediate formation and hydrolysis may be mediated by a conserved active site water channel. Taken together, our results provide mechanistic insights underpinning histidine nucleophilic catalysis in general and hHint1 catalysis, in particular, thus aiding the design of future proTides and the elucidation of the natural function of the Hint family of enzymes.
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Affiliation(s)
- Rachit Shah
- Department of Medicinal Chemistry University of Minnesota , Minneapolis, Minnesota 55455, United States
| | - Kimberly M Maize
- Department of Medicinal Chemistry University of Minnesota , Minneapolis, Minnesota 55455, United States
| | - Xin Zhou
- Department of Medicinal Chemistry University of Minnesota , Minneapolis, Minnesota 55455, United States
| | - Barry C Finzel
- Department of Medicinal Chemistry University of Minnesota , Minneapolis, Minnesota 55455, United States
| | - Carston R Wagner
- Department of Medicinal Chemistry University of Minnesota , Minneapolis, Minnesota 55455, United States
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22
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Peeters K, Chamova T, Tournev I, Jordanova A. Axonal neuropathy with neuromyotonia: there is a HINT. Brain 2017; 140:868-877. [PMID: 28007994 PMCID: PMC5382946 DOI: 10.1093/brain/aww301] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2016] [Accepted: 10/08/2016] [Indexed: 02/06/2023] Open
Abstract
Recessive mutations in the gene encoding the histidine triad nucleotide binding protein 1 (HINT1) were recently shown to cause a motor-predominant Charcot–Marie–Tooth neuropathy. About 80% of the patients exhibit neuromyotonia, a striking clinical and electrophysiological hallmark that can help to distinguish this disease and to guide diagnostic screening. HINT1 neuropathy has worldwide distribution and is particularly prevalent in populations inhabiting central and south-eastern Europe. With 12 different mutations identified in more than 60 families, it ranks among the most common subtypes of axonal Charcot–Marie–Tooth neuropathy. This article provides an overview of the present knowledge on HINT1 neuropathy with the aim to increase awareness and spur interest among clinicians and researchers in the field. We propose diagnostic guidelines to recognize and differentiate this entity and suggest treatment strategies to manage common symptoms. As a recent player in the field of hereditary neuropathies, the role of HINT1 in peripheral nerves is unknown and the underlying disease mechanisms are unexplored. We provide a comprehensive overview of the structural and functional characteristics of the HINT1 protein that may guide further studies into the molecular aetiology and treatment strategies of this peculiar Charcot–Marie–Tooth subtype.
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Affiliation(s)
- Kristien Peeters
- Molecular Neurogenomics Group, Department of Molecular Genetics, VIB and University of Antwerp, Antwerpen 2610, Belgium
| | - Teodora Chamova
- Department of Neurology, Medical University-Sofia, Sofia 1431, Bulgaria
| | - Ivailo Tournev
- Department of Neurology, Medical University-Sofia, Sofia 1431, Bulgaria.,Department of Cognitive Science and Psychology, New Bulgarian University, Sofia 1618, Bulgaria
| | - Albena Jordanova
- Molecular Neurogenomics Group, Department of Molecular Genetics, VIB and University of Antwerp, Antwerpen 2610, Belgium.,Department of Medical Chemistry and Biochemistry, Molecular Medicine Center, Medical University-Sofia, Sofia 1431, Bulgaria
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23
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Liang G, Webster CE. Phosphoramidate hydrolysis catalyzed by human histidine triad nucleotide binding protein 1 (hHint1): a cluster-model DFT computational study. Org Biomol Chem 2017; 15:8661-8668. [DOI: 10.1039/c7ob02098h] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The histidine triad of hHint1 serves as a proton shuttle in the DFT proposed mechanism of the hydrolysis of phosphoramidate.
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Affiliation(s)
- Guangchao Liang
- Department of Chemistry and Center for Computational Sciences
- Mississippi State University
- Mississippi State
- USA
- Department of Chemistry
| | - Charles Edwin Webster
- Department of Chemistry and Center for Computational Sciences
- Mississippi State University
- Mississippi State
- USA
- Department of Chemistry
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24
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Shah R, Strom A, Zhou A, Maize KM, Finzel BC, Wagner CR. Design, Synthesis, and Characterization of Sulfamide and Sulfamate Nucleotidomimetic Inhibitors of hHint1. ACS Med Chem Lett 2016; 7:780-4. [PMID: 27563403 DOI: 10.1021/acsmedchemlett.6b00169] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2016] [Accepted: 06/10/2016] [Indexed: 01/07/2023] Open
Abstract
Hint1 has recently emerged to be an important target of interest due to its involvement in the regulation of a broad range of CNS functions including opioid signaling, tolerance, neuropathic pain, and nicotine dependence. A series of inhibitors were rationally designed, synthesized, and tested for their inhibitory activity against hHint1 using isothermal titration calorimetry (ITC). The studies resulted in the development of the first small-molecule inhibitors of hHint1 with submicromolar binding affinities. A combination of thermodynamic and high-resolution X-ray crystallographic studies provides an insight into the biomolecular recognition of ligands by hHint1. These novel inhibitors have potential utility as molecular probes to better understand the role and function of hHint1 in the CNS.
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Affiliation(s)
- Rachit Shah
- Departments
of Medicinal Chemistry and §Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Alexander Strom
- Departments
of Medicinal Chemistry and §Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Andrew Zhou
- Departments
of Medicinal Chemistry and §Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Kimberly M. Maize
- Departments
of Medicinal Chemistry and §Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Barry C. Finzel
- Departments
of Medicinal Chemistry and §Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Carston R. Wagner
- Departments
of Medicinal Chemistry and §Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
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25
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Maize KM. Errors in Crystal structure of HINT from Helicobacter pylori. Acta Crystallogr F Struct Biol Commun 2016; 72:336-7. [PMID: 27050269 PMCID: PMC4822992 DOI: 10.1107/s2053230x16004088] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2016] [Accepted: 03/10/2016] [Indexed: 12/03/2022] Open
Abstract
Inaccuracies in the article, Crystal structure of HINT from Helicobacter pylori by Tarique et al. [(2016) Acta Cryst. F72, 42-48] are presented, and a brief history of HINT nomenclature is discussed.
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Affiliation(s)
- Kimberly M. Maize
- Medicinal Chemistry, University of Minnesota, 308 Harvard St SE, 8-101 Weaver-Densford Hall, Minneapolis, Minnesota 55455, USA
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26
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Dolot R, Kaczmarek R, Sęda A, Krakowiak A, Baraniak J, Nawrot B. Crystallographic studies of the complex of human HINT1 protein with a non-hydrolyzable analog of Ap4A. Int J Biol Macromol 2016; 87:62-9. [PMID: 26905466 DOI: 10.1016/j.ijbiomac.2016.02.047] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2015] [Revised: 02/05/2016] [Accepted: 02/16/2016] [Indexed: 10/22/2022]
Abstract
Histidine triad nucleotide-binding protein 1 (HINT1) represents the most ancient and widespread branch in the histidine triad proteins superfamily. HINT1 plays an important role in various biological processes, and it has been found in many species. Here, we report the first structure (at a 2.34Å resolution) of a complex of human HINT1 with a non-hydrolyzable analog of an Ap4A dinucleotide, containing bis-phosphorothioated glycerol mimicking a polyphosphate chain, obtained from a primitive monoclinic space group P21 crystal. In addition, the apo form of hHINT1 at the space group P21 refined to 1.92Å is reported for comparative studies.
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Affiliation(s)
- Rafał Dolot
- Department of Bioorganic Chemistry, Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Sienkiewicza 112, 90-363 Łódź, Poland.
| | - Renata Kaczmarek
- Department of Bioorganic Chemistry, Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Sienkiewicza 112, 90-363 Łódź, Poland
| | - Aleksandra Sęda
- Department of Bioorganic Chemistry, Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Sienkiewicza 112, 90-363 Łódź, Poland
| | - Agnieszka Krakowiak
- Department of Bioorganic Chemistry, Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Sienkiewicza 112, 90-363 Łódź, Poland
| | - Janina Baraniak
- Department of Bioorganic Chemistry, Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Sienkiewicza 112, 90-363 Łódź, Poland
| | - Barbara Nawrot
- Department of Bioorganic Chemistry, Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Sienkiewicza 112, 90-363 Łódź, Poland
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27
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Hanaoka K, Tanaka W, Kayanuma M, Shoji M. A QM/MM study of the 5′-AMP DNA hydrolysis of aprataxin. Chem Phys Lett 2015. [DOI: 10.1016/j.cplett.2015.04.053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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28
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Interactions of cellular histidine triad nucleotide binding protein 1 with nucleosides 5′-O-monophosphorothioate and their derivatives — Implication for desulfuration process in the cell. Biochim Biophys Acta Gen Subj 2014; 1840:3357-66. [DOI: 10.1016/j.bbagen.2014.08.016] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2014] [Revised: 08/20/2014] [Accepted: 08/28/2014] [Indexed: 11/27/2022]
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29
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Dolot R, Włodarczyk A, Bujacz GD, Nawrot B. Expression, purification, crystallization and preliminary X-ray crystallographic analysis of human histidine triad nucleotide-binding protein 2 (hHINT2). Acta Crystallogr Sect F Struct Biol Cryst Commun 2013; 69:783-7. [PMID: 23832208 PMCID: PMC3702325 DOI: 10.1107/s1744309113015200] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2013] [Accepted: 06/01/2013] [Indexed: 11/10/2022]
Abstract
Histidine triad nucleotide-binding protein 2 (HINT2) is a mitochondrial adenosine phosphoramidase mainly expressed in the pancreas, liver and adrenal gland. HINT2 possibly plays a role in apoptosis, as well as being involved in steroid biosynthesis, hepatic lipid metabolism and regulation of hepatic mitochondria function. The expression level of HINT2 is significantly down-regulated in hepatocellular carcinoma patients. To date, endogenous substrates for this enzyme, as well as the three-dimensional structure of human HINT2, are unknown. In this study, human HINT2 was cloned, overexpressed in Escherichia coli and purified. Crystallization was performed at 278 K using PEG 4000 as the main precipitant; the crystals, which belonged to the tetragonal space group P41212 with unit-cell parameters a = b = 76.38, c = 133.25 Å, diffracted to 2.83 Å resolution. Assuming two molecules in the asymmetric unit, the Matthews coefficient and the solvent content were calculated to be 2.63 Å(3) Da(-1) and 53.27%, respectively.
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Affiliation(s)
- Rafał Dolot
- Department of Bioorganic Chemistry, Centre of Molecular and Macromolecular Studies, Sienkiewicza 112, 90-363 Łódź, Poland.
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Maize KM, Wagner CR, Finzel BC. Structural characterization of human histidine triad nucleotide-binding protein 2, a member of the histidine triad superfamily. FEBS J 2013; 280:3389-98. [PMID: 23659632 DOI: 10.1111/febs.12330] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2013] [Revised: 05/03/2013] [Accepted: 05/07/2013] [Indexed: 02/02/2023]
Abstract
The histidine triad proteins (HITs) constitute a large and ubiquitous superfamily of nucleotide hydrolases. The human histidine triad nucleotide-binding proteins (hHints) are a distinct class of HITs noted for their acyl-AMP hydrolase and phosphoramidase activity. The first high-resolution crystal structures of hHint2 with and without bound AMP are described. The differences between hHint2 and previously known HIT family protein structures are discussed. HIT family enzymes have historically been divided into five classes based on their catalytic specificity: Hint, fragile HIT protein, galactose-1-phosphate uridylyltransferase, DcpS and aprataxin. However, although several structures exist for the enzymes in these classes, the endogenous substrates of many of these enzymes have not been identified or biochemically characterized. To better understand the structural relationships of the HIT enzymes, a structure-based phylogeny was constructed that resulted in the identification of several new putative HIT clades with potential acyl-AMP hydrolase and phosphoramidase activity.
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Affiliation(s)
- Kimberly M Maize
- Department of Medicinal Chemistry, University of Minnesota, Minneapolis, MN, USA
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Zhou X, Chou TF, Aubol BE, Park CJ, Wolfenden R, Adams J, Wagner CR. Kinetic mechanism of human histidine triad nucleotide binding protein 1. Biochemistry 2013; 52:3588-600. [PMID: 23614568 DOI: 10.1021/bi301616c] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Human histidine triad nucleotide binding protein 1 (hHint1) is a member of a ubiquitous and ancient branch of the histidine triad protein superfamily. hHint1 is a homodimeric protein that catalyzes the hydrolysis of model substrates, phosphoramidate and acyl adenylate, with a high efficiency. Recently, catalytically inactive hHint1 has been identified as the cause of inherited peripheral neuropathy [Zimon, M., et al. (2012) Nat. Genet. 44, 1080-1083]. We have conducted the first detailed kinetic mechanistic studies of hHint1 and have found that the reaction mechanism is consistent with a double-displacement mechanism, in which the active site nucleophile His112 is first adenylylated by the substrate, followed by hydrolysis of the AMP-enzyme intermediate. A transient burst phase followed by a linear phase from the stopped-flow fluorescence assay indicated that enzyme adenylylation was faster than the subsequent intermediate hydrolysis and product release. Solvent viscosity experiments suggested that both chemical transformation and diffusion-sensitive events (product release or protein conformational change) limit the overall turnover. The catalytic trapping experiments and data simulation indicated that the true koff rate of the final product AMP is unlikely to control the overall kcat. Therefore, a protein conformational change associated with product release is likely rate-limiting. In addition, the rate of Hint1 adenylylation was found to be dependent on two residues with pKa values of 6.5 and 8, with the former pKa agreeing well with the nuclear magnetic resonance titration results for the pKa of the active site nucleophile His112. In comparison to the uncatalyzed rates, hHint1 was shown to enhance acyl-AMP and AMP phosphoramidate hydrolysis by 10(6)-10(8)-fold. Taken together, our analysis indicates that hHint1 catalyzes the hydrolysis of phosphoramidate and acyl adenylate with high efficiency, through a mechanism that relies on rapid adenylylation of the active residue, His112, while being partially rate-limited by intermediate hydrolysis and product release associated with a conformational change. Given the high degree of sequence homology of Hint proteins across all kingdoms of life, it is likely that their kinetic and catalytic mechanisms will be similar to those elucidated for hHint1.
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Affiliation(s)
- Xin Zhou
- Department of Medicinal Chemistry and ‡Minnesota NMR Facility, University of Minnesota, Minneapolis, Minnesota 55455, United States
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32
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Martin J, Maurhofer O, Bellance N, Benard G, Graber F, Hahn D, Galinier A, Hora C, Gupta A, Ferrand G, Hoppeler H, Rossignol R, Dufour JF, St-Pierre MV. Disruption of the histidine triad nucleotide-binding hint2 gene in mice affects glycemic control and mitochondrial function. Hepatology 2013; 57:2037-48. [PMID: 22961760 DOI: 10.1002/hep.26060] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/05/2011] [Accepted: 07/30/2012] [Indexed: 12/11/2022]
Abstract
UNLABELLED The histidine triad nucleotide-binding (HINT2) protein is a mitochondrial adenosine phosphoramidase expressed in the liver and pancreas. Its physiological function is unknown. To elucidate the role of HINT2 in liver physiology, the mouse Hint2 gene was deleted. Hint2(-/-) and Hint2(+/+) mice were generated in a mixed C57Bl6/J × 129Sv background. At 20 weeks, the phenotypic changes in Hint2(-/-) relative to Hint2(+/+) mice were an accumulation of hepatic triglycerides, decreased tolerance to glucose, a defective counter-regulatory response to insulin-provoked hypoglycemia, and an increase in plasma interprandial insulin but a decrease in glucose-stimulated insulin secretion and defective thermoregulation upon fasting. Leptin messenger RNA (mRNA) in adipose tissue and plasma leptin were elevated. In mitochondria from Hint2(-/-) hepatocytes, state 3 respiration was decreased, a finding confirmed in HepG2 cells where HINT2 mRNA was silenced. The linked complex II-III electron transfer was decreased in Hint2(-/-) mitochondria, which was accompanied by a lower content of coenzyme Q. Hypoxia-inducible factor-2α expression and the generation of reactive oxygen species were increased. Electron microscopy of mitochondria in Hint2(-/-) mice aged 12 months revealed clustered, fused organelles. The hepatic activities of 3-hydroxyacyl-coenzyme A dehydrogenase short chain and glutamate dehydrogenase (GDH) were decreased by 68% and 60%, respectively, without a change in protein expression. GDH activity was similarly decreased in HINT2-silenced HepG2 cells. When measured in the presence of purified sirtuin 3, latent GDH activity was recovered (126% in Hint2(-/-) versus 83% in Hint2(+/+) ). This suggests a greater extent of acetylation in Hint2(-/-) than in Hint2(+/+) . CONCLUSION Hint2/HINT2 positively regulates mitochondrial lipid metabolism and respiration and glucose homeostasis. The absence of Hint2 provokes mitochondrial deformities and a change in the pattern of acetylation of selected proteins.
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Affiliation(s)
- Juliette Martin
- Division of Hepatology, Department of Clinical Research, University of Berne, Berne, Switzerland
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Anderson KA, Wang D, Hirschey MD. HINT2 and fatty liver disease: mitochondrial protein hyperacetylation gives a hint? Hepatology 2013; 57:1681-3. [PMID: 22991239 PMCID: PMC4019374 DOI: 10.1002/hep.26085] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/29/2012] [Revised: 09/06/2012] [Accepted: 09/12/2012] [Indexed: 01/19/2023]
Affiliation(s)
- Kristin A. Anderson
- Sarah W. Stedman Nutrition and Metabolism Center, Duke University Medical Center, Durham, NC,Department of Pharmacology & Cancer Biology, Duke University Medical Center, Durham, NC
| | - Dongning Wang
- Sarah W. Stedman Nutrition and Metabolism Center, Duke University Medical Center, Durham, NC
| | - Matthew D. Hirschey
- Sarah W. Stedman Nutrition and Metabolism Center, Duke University Medical Center, Durham, NC,Department of Pharmacology & Cancer Biology, Duke University Medical Center, Durham, NC,Department of Medicine, Duke University Medical Center, Durham, NC
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Zimoń M, Baets J, Almeida-Souza L, De Vriendt E, Nikodinovic J, Parman Y, Battaloğlu E, Matur Z, Guergueltcheva V, Tournev I, Auer-Grumbach M, De Rijk P, Petersen BS, Müller T, Fransen E, Van Damme P, Löscher WN, Barišić N, Mitrovic Z, Previtali SC, Topaloğlu H, Bernert G, Beleza-Meireles A, Todorovic S, Savic-Pavicevic D, Ishpekova B, Lechner S, Peeters K, Ooms T, Hahn AF, Züchner S, Timmerman V, Van Dijck P, Rasic VM, Janecke AR, De Jonghe P, Jordanova A. Loss-of-function mutations in HINT1 cause axonal neuropathy with neuromyotonia. Nat Genet 2012; 44:1080-3. [PMID: 22961002 DOI: 10.1038/ng.2406] [Citation(s) in RCA: 85] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2012] [Accepted: 08/10/2012] [Indexed: 01/14/2023]
Abstract
Inherited peripheral neuropathies are frequent neuromuscular disorders known for their clinical and genetic heterogeneity. In 33 families, we identified 8 mutations in HINT1 (encoding histidine triad nucleotide-binding protein 1) by combining linkage analyses with next-generation sequencing and subsequent cohort screening of affected individuals. Our study provides evidence that loss of functional HINT1 protein results in a distinct phenotype of autosomal recessive axonal neuropathy with neuromyotonia.
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Affiliation(s)
- Magdalena Zimoń
- Molecular Neurogenomics Group, Department of Molecular Genetics, VIB, University of Antwerp, Antwerp, Belgium
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Dolot R, Ozga M, Włodarczyk A, Krakowiak A, Nawrot B. A new crystal form of human histidine triad nucleotide-binding protein 1 (hHINT1) in complex with adenosine 5'-monophosphate at 1.38 Å resolution. Acta Crystallogr Sect F Struct Biol Cryst Commun 2012; 68:883-8. [PMID: 22869114 PMCID: PMC3412765 DOI: 10.1107/s1744309112029491] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2012] [Accepted: 06/28/2012] [Indexed: 11/10/2022]
Abstract
Histidine triad nucleotide-binding protein 1 (HINT1) represents the most ancient and widespread branch of the histidine triad protein superfamily. HINT1 plays an important role in various biological processes and has been found in many species. Here, the structure of the human HINT1-adenosine 5'-monophosphate (AMP) complex at 1.38 Å resolution obtained from a new monoclinic crystal form is reported. The final structure has R(cryst) = 0.1207 (R(free) = 0.1615) and the model exhibits good stereochemical quality. Detailed analysis of the high-resolution data allowed the details of the protein structure to be updated in comparison to the previously published data.
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Affiliation(s)
- Rafał Dolot
- Department of Bioorganic Chemistry, Centre of Molecular and Macromolecular Studies, Sienkiewicza 112, 90-363 Łódź, Poland.
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Wang J, Fang P, Schimmel P, Guo M. Side chain independent recognition of aminoacyl adenylates by the Hint1 transcription suppressor. J Phys Chem B 2012; 116:6798-805. [PMID: 22329685 PMCID: PMC3375047 DOI: 10.1021/jp212457w] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
![]()
Human Hint1 suppresses specific gene transcription by
interacting with the transcription factor MITF in mast cells. Hint1
activity is connected to lysyl-tRNA synthetase (LysRS), a member of
the universal aminoacyl tRNA synthetase family that catalyzes specific
aminoacylation of their cognate tRNAs, through an aminoacyl adenylate
(aa-AMP) intermediate. During immune activation, LysRS produces a
side-product diadenosine tetraphosphate (Ap4A) from the
condensation of Lys-AMP with ATP. The pleiotropic signaling molecule
Ap4A then binds Hint1 to promote activation of MITF-target
gene transcription. Earlier work showed that Hint1 can also bind and
hydrolyze Lys-AMP, possibly to constrain Ap4A production.
Because Ap4A can result from condensation of other aa-AMP's
with ATP, the specificity of the Hint1 aa-AMP–hydrolysis activity
is of interest. Here we show that Hint1 has broad specificity for
adenylate hydrolysis, whose structural basis we revealed through high-resolution
structures of Hint1 in complex with three different aa-AMP analogues.
Hint1 recognizes only the common main chain of the aminoacyl moiety,
and has no contact with the aa side chain. The α-amino group
is anchored by a cation-pi interaction with Trp123 at the C-terminus
of Hint1. These results reveal the structural basis for the remarkable
adenylate surveillance activity of Hint1, to potentially control Ap4A levels in the cell.
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Affiliation(s)
- Jing Wang
- Department of Cancer Biology, The Scripps Research Institute, Scripps Florida, 130 Scripps Way, Jupiter, Florida 33458, USA
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Bardaweel SK, Ghosh B, Wagner CR. Synthesis and evaluation of potential inhibitors of human and Escherichia coli histidine triad nucleotide binding proteins. Bioorg Med Chem Lett 2011; 22:558-60. [PMID: 22104145 DOI: 10.1016/j.bmcl.2011.10.082] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2011] [Revised: 10/22/2011] [Accepted: 10/25/2011] [Indexed: 10/16/2022]
Abstract
Based on recent substrate specificity studies, a series of ribonucleotide based esters and carbamates were synthesized and screened as inhibitors of the phosphoramidases and acyl-AMP hydrolases, Escherichia coli Histidine Triad Nucleotide Binding Protein (ecHinT) and human Histidine Triad Nucleotide Binding Protein 1 (hHint1). Using our established phosphoramidase assay, K(i) values were determined. All compounds exhibited non-competitive inhibition profiles. The carbamate based inhibitors were shown to successfully suppress the Hint1-associated phenotype in E. coli, suggesting that they are permeable intracellular inhibitors of ecHinT.
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Affiliation(s)
- Sanaa K Bardaweel
- Department of Medicinal Chemistry, College of Pharmacy, University of Minnesota, Minneapolis, MN 55455, USA
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Bardaweel S, Ghosh B, Chou TF, Sadowsky MJ, Wagner CR. E. coli histidine triad nucleotide binding protein 1 (ecHinT) is a catalytic regulator of D-alanine dehydrogenase (DadA) activity in vivo. PLoS One 2011; 6:e20897. [PMID: 21754980 PMCID: PMC3130732 DOI: 10.1371/journal.pone.0020897] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2011] [Accepted: 05/11/2011] [Indexed: 11/29/2022] Open
Abstract
Histidine triad nucleotide binding proteins (Hints) are highly conserved members of the histidine triad (HIT) protein superfamily. Hints comprise the most ancient branch of this superfamily and can be found in Archaea, Bacteria, and Eukaryota. Prokaryotic genomes, including a wide diversity of both Gram-negative and Gram-positive bacteria, typically have one Hint gene encoded by hinT (ycfF in E. coli). Despite their ubiquity, the foundational reason for the wide-spread conservation of Hints across all kingdoms of life remains a mystery. In this study, we used a combination of phenotypic screening and complementation analyses with wild-type and hinT knock-out Escherichia coli strains to show that catalytically active ecHinT is required in E. coli for growth on D-alanine as a sole carbon source. We demonstrate that the expression of catalytically active ecHinT is essential for the activity of the enzyme D-alanine dehydrogenase (DadA) (equivalent to D-amino acid oxidase in eukaryotes), a necessary component of the D-alanine catabolic pathway. Site-directed mutagenesis studies revealed that catalytically active C-terminal mutants of ecHinT are unable to activate DadA activity. In addition, we have designed and synthesized the first cell-permeable inhibitor of ecHinT and demonstrated that the wild-type E. coli treated with the inhibitor exhibited the same phenotype observed for the hinT knock-out strain. These results reveal that the catalytic activity and structure of ecHinT is essential for DadA function and therefore alanine metabolism in E. coli. Moreover, they provide the first biochemical evidence linking the catalytic activity of this ubiquitous protein to the biological function of Hints in Escherichia coli.
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Affiliation(s)
- Sanaa Bardaweel
- Department of Medicinal Chemistry, University of Minnesota, Minneapolis, Minnesota, United States of America
| | - Brahma Ghosh
- Department of Medicinal Chemistry, University of Minnesota, Minneapolis, Minnesota, United States of America
| | - Tsui-Fen Chou
- Department of Medicinal Chemistry, University of Minnesota, Minneapolis, Minnesota, United States of America
| | - Michael J. Sadowsky
- Department of Soil, Water and Climate and the Biotechnology Institute, University of Minnesota, St. Paul, Minnesota, United States of America
- * E-mail: (CRW); (MJS)
| | - Carston R. Wagner
- Department of Medicinal Chemistry, University of Minnesota, Minneapolis, Minnesota, United States of America
- * E-mail: (CRW); (MJS)
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Dolot R, Ozga M, Krakowiak A, Nawrot B. High-resolution X-ray structure of the rabbit histidine triad nucleotide-binding protein 1 (rHINT1)–adenosine complex at 1.10 Å resolution. ACTA CRYSTALLOGRAPHICA SECTION D: BIOLOGICAL CRYSTALLOGRAPHY 2011; 67:601-7. [DOI: 10.1107/s0907444911015605] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2010] [Accepted: 04/25/2011] [Indexed: 11/11/2022]
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Martin J, St-Pierre MV, Dufour JF. Hit proteins, mitochondria and cancer. BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS 2011; 1807:626-32. [PMID: 21316334 DOI: 10.1016/j.bbabio.2011.02.001] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2010] [Revised: 02/02/2011] [Accepted: 02/02/2011] [Indexed: 11/30/2022]
Abstract
The histidine triad (HIT) superfamily comprises proteins that share the histidine triad motif, His-ϕ-His-ϕ-His-ϕ-ϕ, where ϕ is a hydrophobic amino acid. HIT proteins are ubiquitous in prokaryotes and eukaryotes. HIT proteins bind nucleotides and exert dinucleotidyl hydrolase, nucleotidylyl transferase or phosphoramidate hydrolase enzymatic activity. In humans, 5 families of HIT proteins are recognized. The accumulated epidemiological and experimental evidence indicates that two branches of the superfamily, the HINT (Histidine Triad Nucleotide Binding) members and FHIT (Fragile Histidine Triad), have tumor suppressor properties but a conclusive physiological role can still not be assigned to these proteins. Aprataxin forms another discrete branch of the HIT superfamily, is implicated in DNA repair mechanisms and unlike the HINT and FHIT members, a defective protein can be conclusively linked to a disease, ataxia with oculomotor apraxia type 1. The scavenger mRNA decapping enzyme, DcpS, forms a fourth branch of the HIT superfamily. Finally, the GalT enzymes, which exert specific nucleoside monophosphate transferase activity, form a fifth branch that is not implicated in tumorigenesis. The molecular mechanisms by which the HINT and FHIT proteins participate in bioenergetics of cancer are just beginning to be unraveled. Their purported actions as tumor suppressors are highlighted in this review.
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Affiliation(s)
- Juliette Martin
- Institute of Clinical Pharmacology and Visceral Research, University of Bern, Switzerland
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Itzen A, Blankenfeldt W, Goody RS. Adenylylation: renaissance of a forgotten post-translational modification. Trends Biochem Sci 2011; 36:221-8. [PMID: 21256032 DOI: 10.1016/j.tibs.2010.12.004] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2010] [Revised: 12/22/2010] [Accepted: 12/22/2010] [Indexed: 01/29/2023]
Abstract
The stable post-translational modification of proteins by adenylylation or uridylylation was discovered more than four decades ago as a mechanism to regulate the activity of enzymes. Although many other processes involving the covalent transfer of an AMP residue to an amino acid side chain have been identified since then, these are transient adenylylation events that essentially use the free energy of ATP hydrolysis to activate specific processes. Recently, new examples of stable adenylylation of small GTPases involved in signal transduction and regulation of cellular events were discovered, which appear to modulate downstream processes such as cytoskeletal rearrangement and vesicular trafficking. We present a survey of the historical and modern phases of research in this area, focusing on the common and differing aspects of protein adenylylation.
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Affiliation(s)
- Aymelt Itzen
- Department of Physical Biochemistry, Max Planck Institute of Molecular Physiology, Otto-Hahn-Strasse 11, 44227 Dortmund, Germany
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Bardaweel S, Pace J, Chou TF, Cody V, Wagner CR. Probing the impact of the echinT C-terminal domain on structure and catalysis. J Mol Biol 2010; 404:627-38. [PMID: 20934431 DOI: 10.1016/j.jmb.2010.09.066] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2010] [Revised: 09/28/2010] [Accepted: 09/30/2010] [Indexed: 11/25/2022]
Abstract
Histidine triad nucleotide binding protein (Hint) is considered as the ancestor of the histidine triad protein superfamily and is highly conserved from bacteria to humans. Prokaryote genomes, including a wide array of both Gram-negative bacteria and Gram-positive bacteria, typically encode one Hint gene. The cellular function of Hint and the rationale for its evolutionary conservation in bacteria have remained a mystery. Despite its ubiquity and high sequence similarity to eukaryote Hint1 [Escherichia coli Hint (echinT) is 48% identical with human Hint1], prokaryote Hint has been reported in only a few studies. Here we report the first conformational information on the full-length N-terminal and C-terminal residues of Hint from the E. coli complex with GMP. Structural analysis of the echinT-GMP complex reveals that it crystallizes in the monoclinic space group P2(1) with four homodimers in the asymmetric unit. Analysis of electron density for both the N-terminal residues and the C-terminal residues of the echinT-GMP complex indicates that the loops in some monomers can adopt more than one conformation. The observation of conformational flexibility in terminal loop regions could explain the presence of multiple homodimers in the asymmetric unit of this structure. To explore the impact of the echinT C-terminus on protein structure and catalysis, we conducted a series of catalytic radiolabeling and kinetic experiments on the C-terminal deletion mutants of echinT. In this study, we show that sequential deletion of the C-terminus likely has no effect on homodimerization and a modest effect on the secondary structure of echinT. However, we observed a significant impact on the folding structure, as reflected by a significant lowering of the T(m) value. Kinetic analysis reveals that the C-terminal deletion mutants are within an order of magnitude less efficient in catalysis compared to wild type, while the overall kinetic mechanism that proceeds through a fast step, followed by a rate-limiting hydrolysis step, was conserved. Nevertheless, the ability of the C-terminal deletion mutants to hydrolyze lysyl-AMP generated by LysU was greatly impaired. Taken together, our results highlight the emerging role of the C-terminus in governing the catalytic function of Hints.
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Affiliation(s)
- Sanaa Bardaweel
- Department of Medicinal Chemistry, University of Minnesota, 8-174 Weaver Densford Hall, 308 Harvard Street SE, Minneapolis, MN 55455, USA
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Wu L, Wu X, Deng H, Huang Y. First identification and functional analysis of a histidine triad nucleotide binding protein in an invertebrate species Haliotis diversicolor supertexta. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2010; 34:76-83. [PMID: 19720079 DOI: 10.1016/j.dci.2009.08.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2009] [Revised: 08/21/2009] [Accepted: 08/21/2009] [Indexed: 05/28/2023]
Abstract
Histidine triad nucleotide binding protein (HINT) represents the most ancient and widespread branches in the histidine triad superfamily. HINT plays an important role in many biological processes especially in cell biology, and it has been found in a wide variety of species. However, the functional attributes of HINT homologues in invertebrates have not yet been reported. Here we identified a HINT homologue in abalone, which we named ab-HINT. The ab-HINT shows significant structural and functional similarities to mammalian HINT. RT-PCR and western blot analysis show that ab-HINT is ubiquitously expressed in abalone tissues and highly expressed in hemocyte and gills. In addition, significant up-regulation of ab-HINT was observed after LPS or Poly I:C challenge. Immunostainings suggest that ab-HINT is expressed predominantly in epithelial cells and mainly localized in the cytoplasmic compartment. Studies of the effect on cell apoptosis indicate that ab-HINT can trigger hemocytes apoptosis and p53 is involved in this process. These results conclude that ab-HINT is involved in the immune response of abalone and may be a potential pro-apoptotic factor. To the best of our knowledge, this is the first identification and characterization of a HINT homologue in invertebrates.
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Affiliation(s)
- Liuji Wu
- Laboratory of Marine Life Science and Technology, College of Animal Sciences, Zhejiang University, 268 Kaixuan Road, Hangzhou 310029, PR China
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44
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Cheng J, Zhou X, Chou TF, Ghosh B, Liu B, Wagner CR. Identification of the amino acid-AZT-phosphoramidase by affinity T7 phage display selection. Bioorg Med Chem Lett 2009; 19:6379-81. [DOI: 10.1016/j.bmcl.2009.09.067] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2009] [Revised: 09/17/2009] [Accepted: 09/17/2009] [Indexed: 10/20/2022]
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46
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Abstract
Gene expression changes in neuropsychiatric and neurodegenerative disorders, and gene responses to therapeutic drugs, provide new ways to identify central nervous system (CNS) targets for drug discovery. This review summarizes gene and pathway targets replicated in expression profiling of human postmortem brain, animal models, and cell culture studies. Analysis of isolated human neurons implicates targets for Alzheimer's disease and the cognitive decline associated with normal aging and mild cognitive impairment. In addition to tau, amyloid-beta precursor protein, and amyloid-beta peptides (Abeta), these targets include all three high-affinity neurotrophin receptors and the fibroblast growth factor (FGF) system, synapse markers, glutamate receptors (GluRs) and transporters, and dopamine (DA) receptors, particularly the D2 subtype. Gene-based candidates for Parkinson's disease (PD) include the ubiquitin-proteosome system, scavengers of reactive oxygen species, brain-derived neurotrophic factor (BDNF), its receptor, TrkB, and downstream target early growth response 1, Nurr-1, and signaling through protein kinase C and RAS pathways. Increasing variability and decreases in brain mRNA production from middle age to old age suggest that cognitive impairments during normal aging may be addressed by drugs that restore antioxidant, DNA repair, and synaptic functions including those of DA to levels of younger adults. Studies in schizophrenia identify robust decreases in genes for GABA function, including glutamic acid decarboxylase, HINT1, glutamate transport and GluRs, BDNF and TrkB, numerous 14-3-3 protein family members, and decreases in genes for CNS synaptic and metabolic functions, particularly glycolysis and ATP generation. Many of these metabolic genes are increased by insulin and muscarinic agonism, both of which are therapeutic in psychosis. Differential genomic signals are relatively sparse in bipolar disorder, but include deficiencies in the expression of 14-3-3 protein members, implicating these chaperone proteins and the neurotransmitter pathways they support as possible drug targets. Brains from persons with major depressive disorder reveal decreased expression for genes in glutamate transport and metabolism, neurotrophic signaling (eg, FGF, BDNF and VGF), and MAP kinase pathways. Increases in these pathways in the brains of animals exposed to electroconvulsive shock and antidepressant treatments identify neurotrophic and angiogenic growth factors and second messenger stimulation as therapeutic approaches for the treatment of depression.
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Nechushtan H, Kim S, Kay G, Razin E. Chapter 1 The Physiological Role of Lysyl tRNA Synthetase in the Immune System. Adv Immunol 2009; 103:1-27. [DOI: 10.1016/s0065-2776(09)03001-6] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Abstract
We have demonstrated that nanostructures, and in particular nanorings incorporating a homodimeric enzyme, can be prepared by chemically induced self-assembly of dihydrofolate reductase (DHFR)-histidine triad nucleotide binding 1 (Hint1) fusion proteins. The dimensions of the nanorings were found by static light scattering and atomic force microscopy studies to be dependent on the length and composition of the peptide linking the fusion proteins, ranging in size from 10 to 70 nm in diameter and 64 to 740 kDa. The catalytic efficiency of the nanorings was found to be dependent on ring size, thus suggesting that the arrangement of supermolecular assemblies of enzymes may be used to control their catalytic parameters.
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Affiliation(s)
- Tsui-Fen Chou
- Department of Medicinal Chemistry, University of Minnesota, Minneapolis, Minnesota, 55455, USA
| | - Christopher So
- Genetically Engineered Materials Science and Engineering Center, Department of Materials Science and Engineering and Chemical Engineering, University of Washington, Seattle, Washington USA
| | - Brian R. White
- Department of Medicinal Chemistry, University of Minnesota, Minneapolis, Minnesota, 55455, USA
| | - Jonathan C. T. Carlson
- Department of Medicinal Chemistry, University of Minnesota, Minneapolis, Minnesota, 55455, USA
| | - Mehmet Sarikaya
- Genetically Engineered Materials Science and Engineering Center, Department of Materials Science and Engineering and Chemical Engineering, University of Washington, Seattle, Washington USA
| | - Carston Wagner
- Department of Medicinal Chemistry, University of Minnesota, Minneapolis, Minnesota, 55455, USA
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota, 55455, USA
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Saruwatari Y, Wada T, Takita T, Inouye K. Substrate-induced conformational changes of the truncated catalytic domain of Geobacillus stearothermophilus lysyl-tRNA synthetase as examined by fluorescence. BIOCHIMICA ET BIOPHYSICA ACTA-PROTEINS AND PROTEOMICS 2008; 1784:1633-40. [DOI: 10.1016/j.bbapap.2008.07.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2008] [Revised: 06/15/2008] [Accepted: 07/07/2008] [Indexed: 11/16/2022]
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Meerschaert K, Remue E, De Ganck A, Staes A, Boucherie C, Gevaert K, Vandekerckhove J, Kleiman L, Gettemans J. The tandem PDZ protein Syntenin interacts with the aminoacyl tRNA synthetase complex in a lysyl-tRNA synthetase-dependent manner. J Proteome Res 2008; 7:4962-73. [PMID: 18839981 DOI: 10.1021/pr800325u] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Syntenin-1 is a tandem PDZ protein that binds a diverse array of signaling molecules that are often associated with cell adhesion and intracellular trafficking. With the use of a MS-based functional proteomics approach, we identified several members of the aminoacyl-tRNA synthetase macromolecular (ARS) complex in a syntenin-1 pull down assay. Interaction of these proteins with syntenin-1 was confirmed by co-immunoprecipitation from cultured cells. We demonstrate a direct interaction of syntenin-1 with lysyl-tRNA synthetase (KRS), which contains a PDZ binding motif at its C-terminus. This motif is important for the interaction of the entire complex with syntenin-1. A point mutation in the PDZ2 domain of syntenin-1 abrogates interaction with KRS. As a result, other components of the ARS complex no longer co-immunoprecipitate with syntenin-1. We further show that syntenin-1 regulates KRS activity. These findings suggest that syntenin-1 is an adaptor modulating the activity of KRS.
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Affiliation(s)
- Kris Meerschaert
- Department of Medical Protein Research, VIB, B-9000 Ghent, Belgium
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