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Szepesi Á, Bakacsy L, Fehér A, Kovács H, Pálfi P, Poór P, Szőllősi R, Gondor OK, Janda T, Szalai G, Lindermayr C, Szabados L, Zsigmond L. L-Aminoguanidine Induces Imbalance of ROS/RNS Homeostasis and Polyamine Catabolism of Tomato Roots after Short-Term Salt Exposure. Antioxidants (Basel) 2023; 12:1614. [PMID: 37627609 PMCID: PMC10451491 DOI: 10.3390/antiox12081614] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Revised: 08/02/2023] [Accepted: 08/11/2023] [Indexed: 08/27/2023] Open
Abstract
Polyamine (PA) catabolism mediated by amine oxidases is an important process involved in fine-tuning PA homeostasis and related mechanisms during salt stress. The significance of these amine oxidases in short-term responses to salt stress is, however, not well understood. In the present study, the effects of L-aminoguanidine (AG) on tomato roots treated with short-term salt stress induced by NaCl were studied. AG is usually used as a copper amine oxidase (CuAO or DAO) inhibitor. In our study, other alterations of PA catabolism, such as reduced polyamine oxidase (PAO), were also observed in AG-treated plants. Salt stress led to an increase in the reactive oxygen and nitrogen species in tomato root apices, evidenced by in situ fluorescent staining and an increase in free PA levels. Such alterations were alleviated by AG treatment, showing the possible antioxidant effect of AG in tomato roots exposed to salt stress. PA catabolic enzyme activities decreased, while the imbalance of hydrogen peroxide (H2O2), nitric oxide (NO), and hydrogen sulfide (H2S) concentrations displayed a dependence on stress intensity. These changes suggest that AG-mediated inhibition could dramatically rearrange PA catabolism and related reactive species backgrounds, especially the NO-related mechanisms. More studies are, however, needed to decipher the precise mode of action of AG in plants exposed to stress treatments.
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Affiliation(s)
- Ágnes Szepesi
- Department of Plant Biology, Institute of Biology, Faculty of Science and Informatics, University of Szeged, Közép fasor 52, H-6726 Szeged, Hungary; (L.B.); (A.F.); (H.K.); (P.P.); (P.P.); (R.S.)
| | - László Bakacsy
- Department of Plant Biology, Institute of Biology, Faculty of Science and Informatics, University of Szeged, Közép fasor 52, H-6726 Szeged, Hungary; (L.B.); (A.F.); (H.K.); (P.P.); (P.P.); (R.S.)
| | - Attila Fehér
- Department of Plant Biology, Institute of Biology, Faculty of Science and Informatics, University of Szeged, Közép fasor 52, H-6726 Szeged, Hungary; (L.B.); (A.F.); (H.K.); (P.P.); (P.P.); (R.S.)
- Institute of Plant Biology, Biological Research Centre (BRC), Eötvös Loránd Research Network (ELKH), Temesvári krt. 62, H-6726 Szeged, Hungary; (L.S.); (L.Z.)
| | - Henrietta Kovács
- Department of Plant Biology, Institute of Biology, Faculty of Science and Informatics, University of Szeged, Közép fasor 52, H-6726 Szeged, Hungary; (L.B.); (A.F.); (H.K.); (P.P.); (P.P.); (R.S.)
| | - Péter Pálfi
- Department of Plant Biology, Institute of Biology, Faculty of Science and Informatics, University of Szeged, Közép fasor 52, H-6726 Szeged, Hungary; (L.B.); (A.F.); (H.K.); (P.P.); (P.P.); (R.S.)
| | - Péter Poór
- Department of Plant Biology, Institute of Biology, Faculty of Science and Informatics, University of Szeged, Közép fasor 52, H-6726 Szeged, Hungary; (L.B.); (A.F.); (H.K.); (P.P.); (P.P.); (R.S.)
| | - Réka Szőllősi
- Department of Plant Biology, Institute of Biology, Faculty of Science and Informatics, University of Szeged, Közép fasor 52, H-6726 Szeged, Hungary; (L.B.); (A.F.); (H.K.); (P.P.); (P.P.); (R.S.)
| | - Orsolya Kinga Gondor
- Centre for Agricultural Research, Eötvös Loránd Research Network (ELKH), Brunszvik u.2., H-2462 Martonvásár, Hungary; (O.K.G.); (T.J.); (G.S.)
| | - Tibor Janda
- Centre for Agricultural Research, Eötvös Loránd Research Network (ELKH), Brunszvik u.2., H-2462 Martonvásár, Hungary; (O.K.G.); (T.J.); (G.S.)
| | - Gabriella Szalai
- Centre for Agricultural Research, Eötvös Loránd Research Network (ELKH), Brunszvik u.2., H-2462 Martonvásár, Hungary; (O.K.G.); (T.J.); (G.S.)
| | - Christian Lindermayr
- Institute of Biochemical Plant Pathology, Helmholtz Zentrum Munich, Ingolstädter Landstr. 1, 85764 Neuherberg, Germany;
- Institute of Lung Health and Immunity, Comprehensive Pneumology Center, Helmholtz Munich, Max-Lebsche-Platz 31, 81377 Munich, Germany
| | - László Szabados
- Institute of Plant Biology, Biological Research Centre (BRC), Eötvös Loránd Research Network (ELKH), Temesvári krt. 62, H-6726 Szeged, Hungary; (L.S.); (L.Z.)
| | - Laura Zsigmond
- Institute of Plant Biology, Biological Research Centre (BRC), Eötvös Loránd Research Network (ELKH), Temesvári krt. 62, H-6726 Szeged, Hungary; (L.S.); (L.Z.)
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Murakawa T, Kurihara K, Adachi M, Kusaka K, Tanizawa K, Okajima T. Re-evaluation of protein neutron crystallography with and without X-ray/neutron joint refinement. IUCrJ 2022; 9:342-348. [PMID: 35546796 PMCID: PMC9067118 DOI: 10.1107/s2052252522003657] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Accepted: 04/01/2022] [Indexed: 06/15/2023]
Abstract
Protein neutron crystallography is a powerful technique to determine the positions of H atoms, providing crucial biochemical information such as the protonation states of catalytic groups and the geometry of hydrogen bonds. Recently, the crystal structure of a bacterial copper amine oxidase was determined by joint refinement using X-ray and neutron diffraction data sets at resolutions of 1.14 and 1.72 Å, respectively [Murakawa et al. (2020 ▸). Proc. Natl Acad. Sci. USA, 117, 10818-10824]. While joint refinement is effective for the determination of the accurate positions of heavy atoms on the basis of the electron density, the structural information on light atoms (hydrogen and deuterium) derived from the neutron diffraction data might be affected by the X-ray data. To unravel the information included in the neutron diffraction data, the structure determination was conducted again using only the neutron diffraction data at 1.72 Å resolution and the results were compared with those obtained in the previous study. Most H and D atoms were identified at essentially the same positions in both the neutron-only and the X-ray/neutron joint refinements. Nevertheless, neutron-only refinement was found to be less effective than joint refinement in providing very accurate heavy-atom coordinates that lead to significant improvement of the neutron scattering length density map, especially for the active-site cofactor. Consequently, it was confirmed that X-ray/neutron joint refinement is crucial for determination of the real chemical structure of the catalytic site of the enzyme.
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Affiliation(s)
- Takeshi Murakawa
- Department of Biochemistry, Faculty of Medicine, Osaka Medical and Pharmaceutical University, 2-7 Daigakumachi, Takatsuki, Osaka 569-8686, Japan
| | - Kazuo Kurihara
- Institute for Quantum Life Science, Quantum Life and Medical Science Directorate, National Institutes for Quantum Science and Technology, 2-4 Shirakata, Tokai, Ibaraki 319-1106, Japan
| | - Motoyasu Adachi
- Institute for Quantum Life Science, Quantum Life and Medical Science Directorate, National Institutes for Quantum Science and Technology, 2-4 Shirakata, Tokai, Ibaraki 319-1106, Japan
| | - Katsuhiro Kusaka
- Frontier Research Center for Applied Atomic Sciences, Ibaraki University, 162-1 Shirakata, Tokai, Ibaraki 319-1106, Japan
| | - Katsuyuki Tanizawa
- Institute of Scientific and Industrial Research (SANKEN), Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan
| | - Toshihide Okajima
- Institute of Scientific and Industrial Research (SANKEN), Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan
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Fraudentali I, Pedalino C, Tavladoraki P, Angelini R, Cona A. A New Player in Jasmonate-Mediated Stomatal Closure: The Arabidopsis thaliana Copper Amine Oxidase β. Cells 2021; 10:cells10123399. [PMID: 34943906 PMCID: PMC8699484 DOI: 10.3390/cells10123399] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Revised: 11/18/2021] [Accepted: 11/30/2021] [Indexed: 11/16/2022] Open
Abstract
Plant defence responses to adverse environmental conditions include different stress signalling, allowing plant acclimation and survival. Among these responses one of the most common, immediate, and effective is the modulation of the stomatal aperture, which integrates different transduction pathways involving hydrogen peroxide (H2O2), calcium (Ca2+), nitric oxide (NO), phytohormones and other signalling components. The Arabidopsis thaliana copper amine oxidases β (AtCuAOβ) encodes an apoplastic CuAO expressed in guard cells and root protoxylem tissues which oxidizes polyamines to aminoaldehydes with the production of H2O2 and ammonia. Here, its role in stomatal closure, signalled by the wound-associated phytohormone methyl-jasmonate (MeJA) was explored by pharmacological and genetic approaches. Obtained data show that AtCuAOβ tissue-specific expression is induced by MeJA, especially in stomata guard cells. Interestingly, two Atcuaoβ T-DNA insertional mutants are unresponsive to this hormone, showing a compromised MeJA-mediated stomatal closure compared to the wild-type (WT) plants. Coherently, Atcuaoβ mutants also show compromised H2O2-production in guard cells upon MeJA treatment. Furthermore, the H2O2 scavenger N,N1-dimethylthiourea (DMTU) and the CuAO-specific inhibitor 2-bromoethylamine (2-BrEtA) both reversed the MeJA-induced stomatal closure and the H2O2 production in WT plants. Our data suggest that AtCuAOβ is involved in the H2O2 production implicated in MeJA-induced stomatal closure.
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Affiliation(s)
- Ilaria Fraudentali
- Department of Science, University “Roma Tre”, 00146 Rome, Italy; (I.F.); (C.P.); (P.T.); (R.A.)
| | - Chiara Pedalino
- Department of Science, University “Roma Tre”, 00146 Rome, Italy; (I.F.); (C.P.); (P.T.); (R.A.)
| | - Paraskevi Tavladoraki
- Department of Science, University “Roma Tre”, 00146 Rome, Italy; (I.F.); (C.P.); (P.T.); (R.A.)
- Interuniversity Consortium National Institute of Biostructures and Biosystems (INBB), 00136 Rome, Italy
| | - Riccardo Angelini
- Department of Science, University “Roma Tre”, 00146 Rome, Italy; (I.F.); (C.P.); (P.T.); (R.A.)
- Interuniversity Consortium National Institute of Biostructures and Biosystems (INBB), 00136 Rome, Italy
| | - Alessandra Cona
- Department of Science, University “Roma Tre”, 00146 Rome, Italy; (I.F.); (C.P.); (P.T.); (R.A.)
- Interuniversity Consortium National Institute of Biostructures and Biosystems (INBB), 00136 Rome, Italy
- Correspondence: ; Tel.: +39-06-5733-6360
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Fraudentali I, Rodrigues-Pousada RA, Angelini R, Ghuge SA, Cona A. Plant Copper Amine Oxidases: Key Players in Hormone Signaling Leading to Stress-Induced Phenotypic Plasticity. Int J Mol Sci 2021; 22:5136. [PMID: 34066274 DOI: 10.3390/ijms22105136] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 05/03/2021] [Accepted: 05/07/2021] [Indexed: 02/07/2023] Open
Abstract
Polyamines are ubiquitous, low-molecular-weight aliphatic compounds, present in living organisms and essential for cell growth and differentiation. Copper amine oxidases (CuAOs) oxidize polyamines to aminoaldehydes releasing ammonium and hydrogen peroxide, which participates in the complex network of reactive oxygen species acting as signaling molecules involved in responses to biotic and abiotic stresses. CuAOs have been identified and characterized in different plant species, but the most extensive study on a CuAO gene family has been carried out in Arabidopsis thaliana. Growing attention has been devoted in the last years to the investigation of the CuAO expression pattern during development and in response to an array of stress and stress-related hormones, events in which recent studies have highlighted CuAOs to play a key role by modulation of a multilevel phenotypic plasticity expression. In this review, the attention will be focused on the involvement of different AtCuAOs in the IAA/JA/ABA signal transduction pathways which mediate stress-induced phenotypic plasticity events.
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Fraudentali I, Ghuge SA, Carucci A, Tavladoraki P, Angelini R, Cona A, Rodrigues-Pousada RA. The Copper Amine Oxidase AtCuAOδ Participates in Abscisic Acid-Induced Stomatal Closure in Arabidopsis. Plants (Basel) 2019; 8:E183. [PMID: 31226798 DOI: 10.3390/plants8060183] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/10/2019] [Revised: 06/14/2019] [Accepted: 06/17/2019] [Indexed: 01/06/2023]
Abstract
Plant copper amine oxidases (CuAOs) are involved in wound healing, defense against pathogens, methyl-jasmonate-induced protoxylem differentiation, and abscisic acid (ABA)-induced stomatal closure. In the present study, we investigated the role of the Arabidopsis thaliana CuAOδ (AtCuAOδ; At4g12290) in the ABA-mediated stomatal closure by genetic and pharmacological approaches. Obtained data show that AtCuAOδ is up-regulated by ABA and that two Atcuaoδ T-DNA insertional mutants are less responsive to this hormone, showing reduced ABA-mediated stomatal closure and H2O2 accumulation in guard cells as compared to the wild-type (WT) plants. Furthermore, CuAO inhibitors, as well as the hydrogen peroxide (H2O2) scavenger N,N1-dimethylthiourea, reversed most of the ABA-induced stomatal closure in WT plants. Consistently, AtCuAOδ over-expressing transgenic plants display a constitutively increased stomatal closure and increased H2O2 production compared to WT plants. Our data suggest that AtCuAOδ is involved in the H2O2 production related to ABA-induced stomatal closure.
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Pintus F, Sabatucci A, Maccarrone M, Dainese E, Medda R. Amine oxidase from Euphorbia characias: Kinetic and structural characterization. Biotechnol Appl Biochem 2017; 65:81-88. [PMID: 28940598 DOI: 10.1002/bab.1612] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2017] [Revised: 08/30/2017] [Accepted: 09/12/2017] [Indexed: 01/10/2023]
Abstract
This minireview focuses on a plant copper/2,4,5-trihydroxyphenyl alanine quinone amine oxidase isolated from the latex of the shrub Euphorbia characias (ELAO). This enzyme has been investigated in terms of both molecular structure and kinetic mechanism. The characterization of this enzyme allowed us to identify specific amino acids and domains that play a key role in modulating substrate access into the active site not only for ELAO but also for other plant and mammalian amine oxidases. As mammalian amine oxidases are implicated in several physiological and pathological conditions, the deep structural characterization of their active site accession mechanisms could be the starting point for the development of enzyme modulators with high therapeutic potential. Thus, this paper gives structural/functional insights that open new perspectives in the research about the whole amine oxidase family.
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Affiliation(s)
- Francesca Pintus
- Department of Sciences of Life and Environment, University of Cagliari, Monserrato, Cagliari, Italy
| | - Annalaura Sabatucci
- Faculty of Bioscience and Technology for Food Agriculture and Environment, University of Teramo, Teramo, Italy
| | - Mauro Maccarrone
- European Center for Brain Research (CERC)/Santa Lucia Foundation, Rome, Italy.,Department of Medicine, Campus Bio-Medico University of Rome, Rome, Italy
| | - Enrico Dainese
- Faculty of Bioscience and Technology for Food Agriculture and Environment, University of Teramo, Teramo, Italy.,European Center for Brain Research (CERC)/Santa Lucia Foundation, Rome, Italy
| | - Rosaria Medda
- Department of Sciences of Life and Environment, University of Cagliari, Monserrato, Cagliari, Italy
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Abstract
INTRODUCTION The lysyl oxidase family of enzymes is classically known as being required for connective tissue maturation by oxidizing lysine residues in elastin and lysine and hydroxylysine residues in collagen precursors. The resulting aldehydes then participate in cross-link formation, which is required for normal connective tissue integrity. These enzymes have biological functions that extend beyond this fundamental biosynthetic role, with contributions to angiogenesis, cell proliferation, and cell differentiation. Dysregulation of lysyl oxidases occurs in multiple pathologies including fibrosis, primary and metastatic cancers, and complications of diabetes in a variety of tissues. AREAS COVERED This review summarizes the major findings of novel roles for lysyl oxidases in pathologies, and highlights some of the potential therapeutic approaches that are in development and which stem from these new findings. EXPERT OPINION Fundamental questions remain regarding the mechanisms of novel biological functions of this family of proteins, and regarding functions that are independent of their catalytic enzyme activity. However, progress is underway in the development of isoform-specific pharmacologic inhibitors, potential therapeutic antibodies and gaining an increased understanding of both tumor suppressor and metastasis promotion activities. Ultimately, this is likely to lead to novel therapeutic agents.
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Affiliation(s)
- Philip C Trackman
- a Department of Molecular and Cell Biology , Boston University, Henry M. Goldman School of Dental Medicine , Boston , MA , USA
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Tavladoraki P, Cona A, Angelini R. Copper-Containing Amine Oxidases and FAD-Dependent Polyamine Oxidases Are Key Players in Plant Tissue Differentiation and Organ Development. Front Plant Sci 2016; 7:824. [PMID: 27446096 PMCID: PMC4923165 DOI: 10.3389/fpls.2016.00824] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2016] [Accepted: 05/26/2016] [Indexed: 05/18/2023]
Abstract
Plant polyamines are catabolized by two classes of amine oxidases, the copper amine oxidases (CuAOs) and the flavin adenine dinucleotide (FAD)-dependent polyamine oxidases (PAOs). These enzymes differ to each other in substrate specificity, catalytic mechanism and subcellular localization. CuAOs and PAOs contribute to several physiological processes both through the control of polyamine homeostasis and as sources of biologically-active reaction products. CuAOs and PAOs have been found at high level in the cell-wall of several species belonging to Fabaceae and Poaceae families, respectively, especially in tissues fated to undertake extensive wall loosening/stiffening events and/or in cells undergoing programmed cell death (PCD). Apoplastic CuAOs and PAOs have been shown to play a key role as a source of H2O2 in light- or developmentally-regulated differentiation events, thus influencing cell-wall architecture and maturation as well as PCD. Moreover, growing evidence suggests a key role of intracellular CuAOs and PAOs in several facets of plant development. Here, we discuss recent advances in understanding the contribution of different CuAOs/PAOs, as well as their cross-talk with different intracellular and apoplastic metabolic pathways, in tissue differentiation and organ development.
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Abstract
For some homodimeric copper amine oxidases (CuAO), there is suggestive evidence of differential activity at the two active sites implying potential cooperativity between the two monomers. To examine this phenomenon for the Arthrobacter globiformis CuAO (AGAO), we purified a heterodimeric form of the enzyme for comparison with the homodimer. The heterodimer comprises an active wild-type monomer and an inactive monomer in which an active-site tyrosine is mutated to phenylalanine (Y382F). This mutation prevents the formation of the trihydroxyphenylalanine quinone (TPQ) cofactor. A pETDuet vector and a dual fusion tag strategy was used to purify heterodimers (WT/Y382F) from homodimers. Purity was confirmed by western blot and native PAGE analyses. Spectral and kinetic studies support the view that whether there are one or two functional monomers in the dimer, the properties of each functional monomer are the same, thus indicating no communication between the active sites in this bacterial enzyme.
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Affiliation(s)
- Thembaninkosi G Gaule
- Astbury Centre for Structural Molecular Biology, School of Molecular and Cellular Biology, Faculty of Biological Sciences, University of LeedsLS2 9JT Leeds (UK) E-mail:
| | - Mark A Smith
- Astbury Centre for Structural Molecular Biology, School of Molecular and Cellular Biology, Faculty of Biological Sciences, University of LeedsLS2 9JT Leeds (UK) E-mail:
| | - Arwen R Pearson
- Hamburg Centre of Ultrafast Imaging, University of Hamburg, CFELBuilding 99, Luruper Chausse 149, 22761 Hamburg (Germany)
| | - Peter F Knowles
- Astbury Centre for Structural Molecular Biology, School of Molecular and Cellular Biology, Faculty of Biological Sciences, University of LeedsLS2 9JT Leeds (UK) E-mail:
| | - Michael J McPherson
- Astbury Centre for Structural Molecular Biology, School of Molecular and Cellular Biology, Faculty of Biological Sciences, University of LeedsLS2 9JT Leeds (UK) E-mail:
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Ernberg K, McGrath AP, Peat TS, Adams TE, Xiao X, Pham T, Newman J, McDonald IA, Collyer CA, Guss JM. A new crystal form of human vascular adhesion protein 1. Acta Crystallogr Sect F Struct Biol Cryst Commun 2010; 66:1572-8. [PMID: 21139198 PMCID: PMC2998357 DOI: 10.1107/s1744309110041515] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2010] [Accepted: 10/14/2010] [Indexed: 11/10/2022]
Abstract
Human vascular adhesion protein 1 (VAP-1) is involved in lymphocyte-endothelial cell adhesion and has been implicated in many human inflammatory diseases. VAP-1 is a member of the copper amine oxidase family of enzymes with a trihydroxyphenylalanine quinone (TPQ) cofactor. Previously characterized crystals of VAP-1 suffered from anisotropy and contained disordered regions; in addition, one form was consistently twinned. In an effort to grow crystals that diffracted to higher resolution for inhibitor-binding studies, a construct with an N-terminal deletion was made and expressed in the Chinese hamster ovary (CHO) glycosylation mutant cell line Lec8. Screening produced crystals that displayed some anisotropy and contained seven molecules per asymmetric unit. These crystals belonged to space group C2, with unit-cell parameters a=394.5, b=115.8, c=179.3 Å, β=112.3°. The structure was refined to a resolution of 2.9 Å, with Rcryst and Rfree values of 0.250 and 0.286, respectively.
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Affiliation(s)
- Karin Ernberg
- School of Molecular Bioscience, University of Sydney, NSW 2006, Australia
| | - Aaron P. McGrath
- School of Molecular Bioscience, University of Sydney, NSW 2006, Australia
| | - Thomas S. Peat
- Molecular and Health Technologies, CSIRO, Parkville, Victoria, Australia
| | - Timothy E. Adams
- Molecular and Health Technologies, CSIRO, Parkville, Victoria, Australia
| | - Xiaowen Xiao
- Molecular and Health Technologies, CSIRO, Parkville, Victoria, Australia
| | - Tam Pham
- Molecular and Health Technologies, CSIRO, Parkville, Victoria, Australia
| | - Janet Newman
- Molecular and Health Technologies, CSIRO, Parkville, Victoria, Australia
| | - Ian A. McDonald
- Pharmaxis Ltd, 20 Rodborough Road, Frenchs Forest, NSW 2086, Australia
| | - Charles A. Collyer
- School of Molecular Bioscience, University of Sydney, NSW 2006, Australia
| | - J. Mitchell Guss
- School of Molecular Bioscience, University of Sydney, NSW 2006, Australia
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McGrath AP, Hilmer KM, Collyer CA, Dooley DM, Guss JM. A new crystal form of human diamine oxidase. Acta Crystallogr Sect F Struct Biol Cryst Commun 2010; 66:137-42. [PMID: 20124708 PMCID: PMC2815678 DOI: 10.1107/s1744309109052130] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2009] [Accepted: 12/03/2009] [Indexed: 05/28/2023]
Abstract
Copper amine oxidases (CAOs) are ubiquitous in nature and catalyse the oxidative deamination of primary amines to the corresponding aldehydes. Humans have three viable CAO genes (AOC1-3). AOC1 encodes human diamine oxidase (hDAO), which is the frontline enzyme for histamine metabolism. hDAO is unique among CAOs in that it has a distinct substrate preference for diamines. The structure of hDAO in space group P2(1)2(1)2(1) with two molecules in the asymmetric unit has recently been reported. Here, the structure of hDAO refined to 2.1 A resolution in space group C222(1) with one molecule in the asymmetric unit is reported.
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Affiliation(s)
- Aaron P McGrath
- School of Molecular and Microbial Biosciences, University of Sydney, NSW 2006, Australia.
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Masini E, Bani D, Marzocca C, Mateescu MA, Mannaioni PF, Federico R, Mondovì B. Pea seedling histaminase as a novel therapeutic approach to anaphylactic and inflammatory disorders. A plant histaminase in allergic asthma and ischemic shock. ScientificWorldJournal 2007; 7:888-902. [PMID: 17619775 PMCID: PMC5901317 DOI: 10.1100/tsw.2007.139] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2006] [Revised: 05/03/2007] [Accepted: 05/14/2007] [Indexed: 11/17/2022] Open
Abstract
Amine oxidases (AOs) are ubiquitous enzymes involved in the metabolism of biogenic amines. Copper AOs (Cu-AOs) catalyze the oxidative deamination of primary amine groups of several biogenic amines, such as putrescine, cadaverine, and histamine. In the present review, the effects of a plant amine oxidase (Cu-AO, histaminase, EC1.4.3.6) purified from pea seedlings in the modulation of IgE-mediated allergic reactions, and in the prevention of cardiac and splachnic postischemic reperfusion damage are reported.
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Affiliation(s)
- Emanuela Masini
- Department of Preclinical and Clinical Pharmacology,
University of Florence,
Italy
| | - Danielle Bani
- Department of Anatomy,
Histology and Forensic Medicine,
Section of Histology,
University of Florence,
Italy
| | - Cosimo Marzocca
- Department of Preclinical and Clinical Pharmacology,
University of Florence,
Italy
| | - Mircea Alexandru Mateescu
- Department of Chemistry and Biochemistry,
Université du Québec à Montréal,
Montreal (Quebec),
Canada
| | | | | | - Bruno Mondovì
- Department of Biochemical Sciences “A. Rossi Fanelli”,
Rome University “La Sapienza”,
Rome,
Italy
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