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Zessin M, Meleshin M, Hilscher S, Schiene-Fischer C, Barinka C, Jung M, Schutkowski M. Continuous Fluorescent Sirtuin Activity Assay Based on Fatty Acylated Lysines. Int J Mol Sci 2023; 24:ijms24087416. [PMID: 37108579 PMCID: PMC10138348 DOI: 10.3390/ijms24087416] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 04/06/2023] [Accepted: 04/10/2023] [Indexed: 04/29/2023] Open
Abstract
Lysine deacetylases, like histone deacetylases (HDACs) and sirtuins (SIRTs), are involved in many regulatory processes such as control of metabolic pathways, DNA repair, and stress responses. Besides robust deacetylase activity, sirtuin isoforms SIRT2 and SIRT3 also show demyristoylase activity. Interestingly, most of the inhibitors described so far for SIRT2 are not active if myristoylated substrates are used. Activity assays with myristoylated substrates are either complex because of coupling to enzymatic reactions or time-consuming because of discontinuous assay formats. Here we describe sirtuin substrates enabling direct recording of fluorescence changes in a continuous format. Fluorescence of the fatty acylated substrate is different when compared to the deacylated peptide product. Additionally, the dynamic range of the assay could be improved by the addition of bovine serum albumin, which binds the fatty acylated substrate and quenches its fluorescence. The main advantage of the developed activity assay is the native myristoyl residue at the lysine side chain avoiding artifacts resulting from the modified fatty acyl residues used so far for direct fluorescence-based assays. Due to the extraordinary kinetic constants of the new substrates (KM values in the low nM range, specificity constants between 175,000 and 697,000 M-1s-1) it was possible to reliably determine the IC50 and Ki values for different inhibitors in the presence of only 50 pM of SIRT2 using different microtiter plate formats.
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Affiliation(s)
- Matthes Zessin
- Department of Medicinal Chemistry, Institute of Pharmacy, Martin-Luther-University Halle-Wittenberg, 06120 Halle, Germany
| | - Marat Meleshin
- Department of Enzymology, Charles Tanford Protein Center, Institute of Biochemistry and Biotechnology, Martin-Luther-University Halle-Wittenberg, 06120 Halle, Germany
| | - Sebastian Hilscher
- Department of Medicinal Chemistry, Institute of Pharmacy, Martin-Luther-University Halle-Wittenberg, 06120 Halle, Germany
| | - Cordelia Schiene-Fischer
- Department of Enzymology, Charles Tanford Protein Center, Institute of Biochemistry and Biotechnology, Martin-Luther-University Halle-Wittenberg, 06120 Halle, Germany
| | - Cyril Barinka
- Institute of Biotechnology, Czech Academy of Sciences, BIOCEV, Prumyslova 595, 25250 Vestec, Czech Republic
| | - Manfred Jung
- Institute of Pharmaceutical Sciences, University of Freiburg, Albertstraße 25, 79104 Freiburg, Germany
| | - Mike Schutkowski
- Department of Enzymology, Charles Tanford Protein Center, Institute of Biochemistry and Biotechnology, Martin-Luther-University Halle-Wittenberg, 06120 Halle, Germany
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2
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Ren C, Wu Q, Xiao R, Ji Y, Yang X, Zhang Z, Qin H, Ma JA, Xuan W. Expanding the Scope of Genetically Encoded Lysine PTMs with Lactylation, β-Hydroxybutyrylation and Lipoylation. Chembiochem 2022; 23:e202200302. [PMID: 35906721 DOI: 10.1002/cbic.202200302] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 07/26/2022] [Indexed: 11/08/2022]
Abstract
Post-translational modifications (PTMs) occurring on lysine residues, especially diverse forms of acylations, have seen rapid growth over the past two decades. Among them, lactylation and β-hydroxybutyrylation of lysine side-chains are newly identified histone marks and their implications in physiology and diseases have aroused broad research interest. Meanwhile, lysine lipoylation is highly conserved in diverse organisms and well known for the pivotal role in central metabolic pathways, and recent findings in the proteomic profiling of protein lipoylation have nonetheless suggested a pressing need for an extensive investigation. For both basic and applied research, it is highly necessary to prepare PTM-bearing proteins particularly in a site-specific manner. Herein, we use genetic code expansion to site-specifically generate these lysine PTMs, including lactylation, β-hydroxybutyrylation and lipoylation in proteins in E. coli and mammalian cells. Notably using strategies including activity-based selection, screening and rational design, unique pyrrolysyl-tRNA synthetase variants were successfully evolved for each of the three non-canonical amino acids and enable efficient production of recombinant proteins, thus holding promise to benefit relevant studies. Through encoding these ncAAs, we examined the deacylase activities of mammalian sirtuins to these modifications, and importantly unfold lipoamidase activity of several sirtuins.
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Affiliation(s)
- Conghui Ren
- Nankai University College of Chemistry, Chemistry, CHINA
| | - Qifan Wu
- Nankai University College of Chemistry, Chemistry, CHINA
| | - Ruotong Xiao
- Nankai University College of Chemistry, chemistry, CHINA
| | - Yanli Ji
- Nankai University College of Chemistry, chemistry, CHINA
| | - Xiaochen Yang
- Nankai University College of Chemistry, chemistry, CHINA
| | - Zhuo Zhang
- Chinese Academy of Sciences Dalian Institute of Chemical Physics, CAS Key Laboratory of Separation Science for Analytical Chemistry, CHINA
| | - Hongqiang Qin
- Chinese Academy of Sciences Dalian Institute of Chemical Physics, CAS Key Laboratory of Separation Science for Analytical Chemistry, CHINA
| | - Jun-An Ma
- Tianjin University, Chemistry, CHINA
| | - Weimin Xuan
- Tianjin University, School of Life Sciences, 92 Weijing Road, 300072, Tianjin, CHINA
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3
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Xiao R, Zhao L, Ma H, Liu Q, Qin H, Luo X, Xuan W. Toward an Orthogonal Protein Lysine Acylation and Deacylation System. Chembiochem 2021; 23:e202100551. [PMID: 34904351 DOI: 10.1002/cbic.202100551] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Revised: 11/22/2021] [Indexed: 11/11/2022]
Abstract
Lysine acetylation is one of the most basic molecular mechanisms to mediate protein functions in living organisms, and its abnormal regulation has been linked to many diseases. The drug development associated to this process is of great significance but severely hindered by the complex interplay of lysine acetylation and deacetylation in thousands of proteins, and we reasoned that targeting a specific protein acetylation or deacetylation event instead of the related enzymes should be a feasible solution to this issue. Toward this goal, we devised an orthogonal lysine acylation and deacylation (OKAD) system, which potentially could precisely dissect the biological consequence of an individual acetylation or deacetylation event in living cells. The system includes a genetically encoded acylated lysine (PhOAcK) that is not a substrate of endogenous deacetylases, and an evolved sirtuin (CobB2/CobB3) that displays PhOAcK deacylase activities as well as reduced deacetylase activities. We believe the strategy introduced here holds potential for future in-depth biological applications.
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Affiliation(s)
- Ruotong Xiao
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin, 300071, P. R. China
| | - Lei Zhao
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin, 300071, P. R. China
| | - Hongpeng Ma
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin, 300071, P. R. China
| | - Qiaoli Liu
- Shenzhen Institute of Synthetic Biology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, P. R. China
| | - Hongqiang Qin
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences (CAS), Dalian, 116023, P. R. China
| | - Xiaozhou Luo
- Shenzhen Institute of Synthetic Biology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, P. R. China
| | - Weimin Xuan
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin, 300071, P. R. China
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4
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Graf LG, Vogt R, Blasl AT, Qin C, Schulze S, Zühlke D, Sievers S, Lammers M. Assays to Study Enzymatic and Non-Enzymatic Protein Lysine Acetylation In Vitro. Curr Protoc 2021; 1:e277. [PMID: 34748287 DOI: 10.1002/cpz1.277] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Proteins can be lysine-acetylated both enzymatically, by lysine acetyltransferases (KATs), and non-enzymatically, by acetyl-CoA and/or acetyl-phosphate. Such modification can be reversed by lysine deacetylases classified as NAD+ -dependent sirtuins or by classical Zn2+ -dependent deacetylases (KDACs). The regulation of protein lysine acetylation events by KATs and sirtuins/KDACs, or by non-enzymatic processes, is often assessed only indirectly by mass spectrometry or by mutational studies in cells. Mutational approaches to study lysine acetylation are limited, as these often poorly mimic lysine acetylation. Here, we describe protocols to assess the direct regulation of protein lysine acetylation by both sirtuins/KDACs and KATs, as well as non-enzymatically. We first describe a protocol for the production of site-specific lysine-acetylated proteins using a synthetic biological approach, the genetic code expansion concept (GCEC). These natively folded, lysine-acetylated proteins can then be used as direct substrates for sirtuins and KDACs. This approach addresses various limitations encountered with other methods. First, results from sirtuin/KDAC-catalyzed deacetylation assays obtained using acetylated peptides as substrates can vary considerably compared to experiments using natively folded substrate proteins. In addition, producing lysine-acetylated proteins for deacetylation assays by using recombinantly expressed KATs is difficult, as these often do not yield proteins that are homogeneously and quantitatively lysine acetylated. Moreover, KATs are often huge multi-domain proteins, which are difficult to recombinantly express and purify in soluble form. We also describe protocols to study the direct regulation of protein lysine acetylation, both enzymatically, by sirtuins/KDACs and KATs, and non-enzymatically, by acetyl-CoA and/or acetyl-phosphate. The latter protocol also includes a section that explains how specific lysine acetylation sites can be detected by liquid chromatography coupled to tandem mass spectrometry (LC-MS/MS). The protocols described here can be useful for providing a more detailed understanding of the enzymatic and non-enzymatic regulation of lysine acetylation sites, an important aspect to judge their physiological significance. © 2021 The Authors. Current Protocols published by Wiley Periodicals LLC. Basic Protocol 1: Preparation of N-(ε)-lysine-acetylated proteins using the genetic code expansion concept (GCEC) Basic Protocol 2: In vitro sirtuin (SIRT)-catalyzed deacetylation of lysine-acetylated proteins prepared by the GCEC Basic Protocol 3: In vitro KDAC/HDAC-catalyzed deacetylation of lysine-acetylated proteins Basic Protocol 4: In vitro lysine acetylation of recombinantly expressed proteins by lysine acetyltransferases (KATs) Basic Protocol 5: In vitro non-enzymatic lysine acetylation of proteins by acetyl-CoA and/or acetyl-phosphate.
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Affiliation(s)
- Leonie G Graf
- Department Synthetic and Structural Biochemistry, University of Greifswald, Institute for Biochemistry, Greifswald, Germany
| | - Robert Vogt
- Department Synthetic and Structural Biochemistry, University of Greifswald, Institute for Biochemistry, Greifswald, Germany
| | - Anna-Theresa Blasl
- Department Synthetic and Structural Biochemistry, University of Greifswald, Institute for Biochemistry, Greifswald, Germany
| | - Chuan Qin
- Department Synthetic and Structural Biochemistry, University of Greifswald, Institute for Biochemistry, Greifswald, Germany
| | - Sabrina Schulze
- Department Synthetic and Structural Biochemistry, University of Greifswald, Institute for Biochemistry, Greifswald, Germany
| | - Daniela Zühlke
- Department of Microbial Physiology and Molecular Biology, University of Greifswald, Institute of Microbiology, Greifswald, Germany
| | - Susanne Sievers
- Department of Microbial Physiology and Molecular Biology, University of Greifswald, Institute of Microbiology, Greifswald, Germany
| | - Michael Lammers
- Department Synthetic and Structural Biochemistry, University of Greifswald, Institute for Biochemistry, Greifswald, Germany
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5
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Neumann-Staubitz P, Lammers M, Neumann H. Genetic Code Expansion Tools to Study Lysine Acylation. Adv Biol (Weinh) 2021; 5:e2100926. [PMID: 34713630 DOI: 10.1002/adbi.202100926] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Revised: 09/27/2021] [Accepted: 09/30/2021] [Indexed: 12/17/2022]
Abstract
Lysine acylation is a ubiquitous protein modification that controls various aspects of protein function, such as the activity, localization, and stability of enzymes. Mass spectrometric identification of lysine acylations has witnessed tremendous improvements in sensitivity over the last decade, facilitating the discovery of thousands of lysine acylation sites in proteins involved in all essential cellular functions across organisms of all domains of life. However, the vast majority of currently known acylation sites are of unknown function. Semi-synthetic methods for installing lysine derivatives are ideally suited for in vitro experiments, while genetic code expansion (GCE) allows the installation and study of such lysine modifications, especially their dynamic properties, in vivo. An overview of the current state of the art is provided, and its potential is illustrated with case studies from recent literature. These include the application of engineered enzymes and GCE to install lysine modifications or photoactivatable crosslinker amino acids. Their use in the context of central metabolism, bacterial and viral pathogenicity, the cytoskeleton and chromatin dynamics, is investigated.
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Affiliation(s)
- Petra Neumann-Staubitz
- Department of Chemical Engineering and Biotechnology, University of Applied Sciences Darmstadt, Stephanstrasse 7, 64295, Darmstadt, Germany
| | - Michael Lammers
- Institute for Biochemistry, Department Synthetic and Structural Biochemistry, University of Greifswald, Felix-Hausdorff-Str. 4, 17487, Greifswald, Germany
| | - Heinz Neumann
- Department of Chemical Engineering and Biotechnology, University of Applied Sciences Darmstadt, Stephanstrasse 7, 64295, Darmstadt, Germany
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Spinck M, Bischoff M, Lampe P, Meyer-Almes FJ, Sievers S, Neumann H. Discovery of Dihydro-1,4-Benzoxazine Carboxamides as Potent and Highly Selective Inhibitors of Sirtuin-1. J Med Chem 2021; 64:5838-5849. [PMID: 33876629 DOI: 10.1021/acs.jmedchem.1c00017] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Sirtuins are signaling hubs orchestrating the cellular response to various stressors with roles in all major civilization diseases. Sirtuins remove acyl groups from lysine residues of proteins, thereby controlling their activity, turnover, and localization. The seven human sirtuins, SirT1-7, are closely related in structure, hindering the development of specific inhibitors. Screening 170,000 compounds, we identify and optimize SirT1-specific benzoxazine inhibitors, Sosbo, which rival the efficiency and surpass the selectivity of selisistat (EX527). The compounds inhibit the deacetylation of p53 in cultured cells, demonstrating their ability to permeate biological membranes. Kinetic analysis of inhibition and docking studies reveal that the inhibitors bind to a complex of SirT1 and nicotinamide adenine dinucleotide, similar to selisistat. These new SirT1 inhibitors are valuable alternatives to selisistat in biochemical and cell biological studies. Their greater selectivity may allow the development of better targeted drugs to combat SirT1 activity in diseases such as cancer, Huntington's chorea, or anorexia.
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Affiliation(s)
- Martin Spinck
- Department of Structural Biochemistry, Max Planck Institute of Molecular Physiology, Otto-Hahn-Strasse 11, Dortmund 44227, Germany
| | - Matthias Bischoff
- Compound Management and Screening Center, Dortmund, Otto-Hahn-Str. 11, Dortmund 44227, Germany
| | - Philipp Lampe
- Compound Management and Screening Center, Dortmund, Otto-Hahn-Str. 11, Dortmund 44227, Germany
| | - Franz-Josef Meyer-Almes
- Department of Chemical Engineering and Biotechnology, University of Applied Sciences Darmstadt, Stephanstrasse 7, Darmstadt 64295, Germany
| | - Sonja Sievers
- Compound Management and Screening Center, Dortmund, Otto-Hahn-Str. 11, Dortmund 44227, Germany
| | - Heinz Neumann
- Department of Structural Biochemistry, Max Planck Institute of Molecular Physiology, Otto-Hahn-Strasse 11, Dortmund 44227, Germany.,Department of Chemical Engineering and Biotechnology, University of Applied Sciences Darmstadt, Stephanstrasse 7, Darmstadt 64295, Germany
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7
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Abstract
Lysine acetylation is a ubiquitous modification permeating the proteomes of organisms from all domains of life. Lysine deacetylases (KDACs) reverse this modification by following two fundamentally different enzymatic mechanisms, which differ mainly by the need for NAD+ as stoichiometric co-substrate. KDACs are often found as catalytic subunit in protein complexes involved in cell cycle regulation, chromatin organization and transcription. Their promiscuity with respect to sequence context and type of lysine acylation convolutes the network of functional and physical connections.Here we present an efficient selection method for KDACs in E. coli, which allows for the creation of acyl-type specific KDAC variants, which greatly facilitate the investigation of their physiological function . The selection system builds on the incorporation of acylated lysines by genetic code expansion in reporter enzymes with essential lysine residues. We describe the creation of KDAC mutant libraries by saturation mutagenesis of active site residues, the isolation of individual mutants from this library using the selection system, and their biochemical characterization with acylated firefly luciferase.
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Affiliation(s)
- Martin Spinck
- Department of Structural Biochemistry, Max-Planck-Institute of Molecular Physiology, Dortmund, Germany
| | - Maria Ecke
- Department of Structural Biochemistry, Max-Planck-Institute of Molecular Physiology, Dortmund, Germany
| | - Damian Schiller
- Department of Structural Biochemistry, Max-Planck-Institute of Molecular Physiology, Dortmund, Germany
| | - Heinz Neumann
- Department of Structural Biochemistry, Max-Planck-Institute of Molecular Physiology, Dortmund, Germany.
- Department of Chemical Engineering and Biotechnology, University of Applied Sciences, Darmstadt, Germany.
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8
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Jain N, Janning P, Neumann H. 14-3-3 Protein Bmh1 triggers short-range compaction of mitotic chromosomes by recruiting sirtuin deacetylase Hst2. J Biol Chem 2020; 296:100078. [PMID: 33187982 PMCID: PMC7948448 DOI: 10.1074/jbc.ac120.014758] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Revised: 11/09/2020] [Accepted: 11/13/2020] [Indexed: 12/11/2022] Open
Abstract
During mitosis, chromosomes are compacted in length by more than 100-fold into rod-shaped forms. In yeast, this process depends on the presence of a centromere, which promotes condensation in cis by recruiting mitotic kinases such as Aurora B kinase. This licensing mechanism enables the cell to discriminate chromosomal from noncentromeric DNA and to prohibit the propagation of the latter. Aurora B kinase elicits a cascade of events starting with phosphorylation of histone H3 serine 10 (H3S10ph), which signals the recruitment of lysine deacetylase Hst2 and the removal of lysine 16 acetylation in histone 4. The unmasked histone 4 tails interact with the acidic patch of neighboring nucleosomes to drive short-range compaction of chromatin, but the mechanistic details surrounding the Hst2 activity remain unclear. Using in vitro and in vivo assays, we demonstrate that the interaction of Hst2 with H3S10ph is mediated by the yeast 14-3-3 protein Bmh1. As a homodimer, Bmh1 binds simultaneously to H3S10ph and the phosphorylated C-terminus of Hst2. Our pull-down experiments with extracts of synchronized cells show that the Hst2–Bmh1 interaction is cell cycle dependent, peaking in the M phase. Furthermore, we show that phosphorylation of C-terminal residues of Hst2, introduced by genetic code expansion, stimulates its deacetylase activity. Hence, the data presented here identify Bmh1 as a key player in the mechanism of licensing of chromosome compaction in mitosis.
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Affiliation(s)
- Neha Jain
- Department of Structural Biochemistry, Max-Planck-Institute of Molecular Physiology, Dortmund, Germany
| | - Petra Janning
- Department of Chemical Biology, Max-Planck-Institute of Molecular Physiology, Dortmund, Germany
| | - Heinz Neumann
- Department of Structural Biochemistry, Max-Planck-Institute of Molecular Physiology, Dortmund, Germany; Department of Chemical Engineering and Biotechnology, University of Applied Sciences Darmstadt, Darmstadt, Germany.
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Spinck M, Neumann‐Staubitz P, Ecke M, Gasper R, Neumann H. Evolvierte, selektive Eraser für spezifische Lysinacylierungen. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202002899] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Martin Spinck
- Abteilung StrukturbiochemieMax-Planck-Institut für molekulare Physiologie Otto-Hahn-Straße 11 44227 Dortmund Deutschland
| | - Petra Neumann‐Staubitz
- Abteilung StrukturbiochemieMax-Planck-Institut für molekulare Physiologie Otto-Hahn-Straße 11 44227 Dortmund Deutschland
| | - Maria Ecke
- Abteilung StrukturbiochemieMax-Planck-Institut für molekulare Physiologie Otto-Hahn-Straße 11 44227 Dortmund Deutschland
| | - Raphael Gasper
- Abteilung Kristallographie und BiophysikMax-Planck-Institut für molekulare Physiologie Otto-Hahn-Straße 11 44227 Dortmund Deutschland
| | - Heinz Neumann
- Abteilung StrukturbiochemieMax-Planck-Institut für molekulare Physiologie Otto-Hahn-Straße 11 44227 Dortmund Deutschland
- Fachbereich Chemie- und BiotechnologieTechnische Hochschule Darmstadt Stephanstraße 7 64295 Darmstadt Deutschland
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10
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Spinck M, Neumann‐Staubitz P, Ecke M, Gasper R, Neumann H. Evolved, Selective Erasers of Distinct Lysine Acylations. Angew Chem Int Ed Engl 2020; 59:11142-11149. [PMID: 32187803 PMCID: PMC7317389 DOI: 10.1002/anie.202002899] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Revised: 03/16/2020] [Indexed: 12/31/2022]
Abstract
Lysine acylations, a family of diverse protein modifications varying in acyl-group length, charge, and saturation, are linked to many important physiological processes. Only a small set of substrate-promiscuous lysine acetyltransferases and deacetylases (KDACs) install and remove this vast variety of modifications. Engineered KDACs that remove only one type of acylation would help to dissect the different contributions of distinct acylations. We developed a bacterial selection system for the directed evolution of KDACs and identified variants up to 400 times more selective for butyryl-lysine compared to crotonyl-lysine. Structural analyses revealed that the enzyme adopts different conformational states depending on the type of acylation of the bound peptide. We used the butyryl-selective KDAC variant to shift the cellular acylation spectrum towards increased lysine crotonylation. These new enzymes will help in dissecting the roles of different lysine acylations in cell physiology.
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Affiliation(s)
- Martin Spinck
- Department of Structural BiochemistryMax-Planck-Institute of Molecular PhysiologyOtto-Hahn-Strasse 1144227DortmundGermany
| | - Petra Neumann‐Staubitz
- Department of Structural BiochemistryMax-Planck-Institute of Molecular PhysiologyOtto-Hahn-Strasse 1144227DortmundGermany
| | - Maria Ecke
- Department of Structural BiochemistryMax-Planck-Institute of Molecular PhysiologyOtto-Hahn-Strasse 1144227DortmundGermany
| | - Raphael Gasper
- Crystallography and Biophysics UnitMax-Planck-Institute of Molecular PhysiologyOtto-Hahn-Strasse 1144227DortmundGermany
| | - Heinz Neumann
- Department of Structural BiochemistryMax-Planck-Institute of Molecular PhysiologyOtto-Hahn-Strasse 1144227DortmundGermany
- Department of Chemical Engineering and BiotechnologyUniversity of Applied Sciences DarmstadtStephanstrasse 764295DarmstadtGermany
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