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Madkour MM, Ramadan WS, Saleh E, El-Awady R. Epigenetic modulations in cancer: predictive biomarkers and potential targets for overcoming the resistance to topoisomerase I inhibitors. Ann Med 2023; 55:2203946. [PMID: 37092854 PMCID: PMC10128461 DOI: 10.1080/07853890.2023.2203946] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 04/25/2023] Open
Abstract
INTRODUCTION Altered epigenetic map is frequently observed in cancer and recent investigations have demonstrated a pertinent role of epigenetic modifications in the response to many anticancer drugs including the DNA damaging agents. Topoisomerase I (Top I) is a well-known nuclear enzyme that is critical for DNA function and cell survival and its inhibition causes DNA strand breaks and cell cycle arrest. Inhibitors of human Top I have proven to be a prosperous chemotherapeutic treatment for a vast number of cancer patients. While the treatment is efficacious in many cases, resistance and altered cellular response remain major therapeutic issues. AREAS COVERED This review highlights the evidence available till date on the influence of different epigenetic modifications on the response to Top I inhibitors as well as the implications of targeting epigenetic alterations for improving the efficacy and safety of Top I inhibitors. EXPERT OPINION The field of epigenetic research is steadily growing. With its assistance, we could gain better understanding on how drug response and resistance work. Epigenetics can evolve as possible biomarkers and predictors of response to many medications including Top I inhibitors, and could have significant clinical implications that necessitate deeper attention.HIGHLIGHTSEpigenetic alterations, including DNA methylation and histone modifications, play a pertinent role in the response to several anticancer treatments, including DNA damaging agents like Top I inhibitors.Although camptothecin derivatives are used clinically as Top I inhibitors for management of cancer, certain types of cancer have inherent and or acquired resistance that limit the curative potential of them.Epigenetic modifications like DNA hypomethylation can either increase or decrease sensitivity to Top I inhibitors by different mechanisms.The combination of Top I inhibitors with the inhibitors of histone modifying enzymes can result in enhanced cytotoxic effects and sensitization of resistant cells to Top I inhibitors.MicroRNAs were found to directly influence the expression of Top I and other proteins in cancer cells resulting in positive or negative alteration of the response to Top I inhibitors.lncRNAs and their genetic polymorphisms have been found to be associated with Top I function and the response to its inhibitors.Clinical trials of epigenetic drugs in combination with Top I inhibitors are plentiful and some of them showed potentially promising outcomes.
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Affiliation(s)
- Moustafa M Madkour
- Sharjah Institute for Medical Research, University of Sharjah, Sharjah, United Arab Emirates
- College of Pharmacy, University of Sharjah, Sharjah, United Arab Emirates
| | - Wafaa S Ramadan
- Sharjah Institute for Medical Research, University of Sharjah, Sharjah, United Arab Emirates
| | - Ekram Saleh
- Clinical Biochemistry and Molecular Biology Unit, Cancer Biology Department, National Cancer Institute, Cairo University, Cairo, Egypt
| | - Raafat El-Awady
- Sharjah Institute for Medical Research, University of Sharjah, Sharjah, United Arab Emirates
- College of Pharmacy, University of Sharjah, Sharjah, United Arab Emirates
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2
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Wu D, Zhang Y, Tang Z, Chen X, Ling X, Li L, Cao W, Zheng W, Wu J, Tang H, Liu X, Luo X, Liu T. Creation of a Yeast Strain with Co‐Translationally Acylated Nucleosomes. Angew Chem Int Ed Engl 2022; 61:e202205570. [DOI: 10.1002/anie.202205570] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Indexed: 11/08/2022]
Affiliation(s)
- Dan Wu
- State Key Laboratory of Natural and Biomimetic Drugs Chemical Biology Center Department of Molecular and Cellular, Pharmacology, Pharmaceutical Sciences Peking University 38 Xueyuan Road, Haidian District Beijing 100191 China
| | - Yunfeng Zhang
- Center for Synthetic Biochemistry Institute of Synthetic Biology Shenzhen Institutes of Advanced Technology Chinese Academy of Sciences Shenzhen 518055 China
| | - Zhiheng Tang
- Department of Microbiology School of Basic Medical Sciences Peking University 38 Xueyuan Road, Haidian District Beijing 100191 China
| | - Xiaoxu Chen
- State Key Laboratory of Natural and Biomimetic Drugs Chemical Biology Center Department of Molecular and Cellular, Pharmacology, Pharmaceutical Sciences Peking University 38 Xueyuan Road, Haidian District Beijing 100191 China
| | - Xinyu Ling
- State Key Laboratory of Natural and Biomimetic Drugs Chemical Biology Center Department of Molecular and Cellular, Pharmacology, Pharmaceutical Sciences Peking University 38 Xueyuan Road, Haidian District Beijing 100191 China
| | - Longtu Li
- Key Laboratory of Protein and Plant Gene Research School of Life Sciences and Peking-Tsinghua Center for Life Science Peking University Beijing 100871 China
| | - Wenbing Cao
- State Key Laboratory of Natural and Biomimetic Drugs Chemical Biology Center Department of Molecular and Cellular, Pharmacology, Pharmaceutical Sciences Peking University 38 Xueyuan Road, Haidian District Beijing 100191 China
| | - Wei Zheng
- State Key Laboratory of Natural and Biomimetic Drugs Chemical Biology Center Department of Molecular and Cellular, Pharmacology, Pharmaceutical Sciences Peking University 38 Xueyuan Road, Haidian District Beijing 100191 China
| | - Jiale Wu
- Key Laboratory of Protein and Plant Gene Research School of Life Sciences and Peking-Tsinghua Center for Life Science Peking University Beijing 100871 China
| | - Hongting Tang
- Center for Synthetic Biochemistry Institute of Synthetic Biology Shenzhen Institutes of Advanced Technology Chinese Academy of Sciences Shenzhen 518055 China
| | - Xiaoyun Liu
- Department of Microbiology School of Basic Medical Sciences Peking University 38 Xueyuan Road, Haidian District Beijing 100191 China
| | - Xiaozhou Luo
- Center for Synthetic Biochemistry Institute of Synthetic Biology Shenzhen Institutes of Advanced Technology Chinese Academy of Sciences Shenzhen 518055 China
- CAS Key Laboratory of Quantitative Engineering Biology Institute of Synthetic Biology Shenzhen Institutes of Advanced Technology Chinese Academy of Sciences Shenzhen 518055 China
| | - Tao Liu
- State Key Laboratory of Natural and Biomimetic Drugs Chemical Biology Center Department of Molecular and Cellular, Pharmacology, Pharmaceutical Sciences Peking University 38 Xueyuan Road, Haidian District Beijing 100191 China
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3
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Wu D, Zhang Y, Tang Z, Chen X, Ling X, Li L, Cao W, Zheng W, Wu J, Tang H, Liu X, Luo X, Liu T. Creation of a Yeast Strain with Co‐Translationally Acylated Nucleosomes. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202205570] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Dan Wu
- State Key Laboratory of Natural and Biomimetic Drugs Chemical Biology Center Department of Molecular and Cellular, Pharmacology, Pharmaceutical Sciences Peking University 38 Xueyuan Road, Haidian District Beijing 100191 China
| | - Yunfeng Zhang
- Center for Synthetic Biochemistry Institute of Synthetic Biology Shenzhen Institutes of Advanced Technology Chinese Academy of Sciences Shenzhen 518055 China
| | - Zhiheng Tang
- Department of Microbiology School of Basic Medical Sciences Peking University 38 Xueyuan Road, Haidian District Beijing 100191 China
| | - Xiaoxu Chen
- State Key Laboratory of Natural and Biomimetic Drugs Chemical Biology Center Department of Molecular and Cellular, Pharmacology, Pharmaceutical Sciences Peking University 38 Xueyuan Road, Haidian District Beijing 100191 China
| | - Xinyu Ling
- State Key Laboratory of Natural and Biomimetic Drugs Chemical Biology Center Department of Molecular and Cellular, Pharmacology, Pharmaceutical Sciences Peking University 38 Xueyuan Road, Haidian District Beijing 100191 China
| | - Longtu Li
- Key Laboratory of Protein and Plant Gene Research School of Life Sciences and Peking-Tsinghua Center for Life Science Peking University Beijing 100871 China
| | - Wenbing Cao
- State Key Laboratory of Natural and Biomimetic Drugs Chemical Biology Center Department of Molecular and Cellular, Pharmacology, Pharmaceutical Sciences Peking University 38 Xueyuan Road, Haidian District Beijing 100191 China
| | - Wei Zheng
- State Key Laboratory of Natural and Biomimetic Drugs Chemical Biology Center Department of Molecular and Cellular, Pharmacology, Pharmaceutical Sciences Peking University 38 Xueyuan Road, Haidian District Beijing 100191 China
| | - Jiale Wu
- Key Laboratory of Protein and Plant Gene Research School of Life Sciences and Peking-Tsinghua Center for Life Science Peking University Beijing 100871 China
| | - Hongting Tang
- Center for Synthetic Biochemistry Institute of Synthetic Biology Shenzhen Institutes of Advanced Technology Chinese Academy of Sciences Shenzhen 518055 China
| | - Xiaoyun Liu
- Department of Microbiology School of Basic Medical Sciences Peking University 38 Xueyuan Road, Haidian District Beijing 100191 China
| | - Xiaozhou Luo
- Center for Synthetic Biochemistry Institute of Synthetic Biology Shenzhen Institutes of Advanced Technology Chinese Academy of Sciences Shenzhen 518055 China
- CAS Key Laboratory of Quantitative Engineering Biology Institute of Synthetic Biology Shenzhen Institutes of Advanced Technology Chinese Academy of Sciences Shenzhen 518055 China
| | - Tao Liu
- State Key Laboratory of Natural and Biomimetic Drugs Chemical Biology Center Department of Molecular and Cellular, Pharmacology, Pharmaceutical Sciences Peking University 38 Xueyuan Road, Haidian District Beijing 100191 China
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4
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Lai Y, Wang L, Zheng W, Wang S. Regulatory Roles of Histone Modifications in Filamentous Fungal Pathogens. J Fungi (Basel) 2022; 8:jof8060565. [PMID: 35736048 PMCID: PMC9224773 DOI: 10.3390/jof8060565] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2022] [Revised: 05/23/2022] [Accepted: 05/24/2022] [Indexed: 12/19/2022] Open
Abstract
Filamentous fungal pathogens have evolved diverse strategies to infect a variety of hosts including plants and insects. The dynamic infection process requires rapid and fine-tuning regulation of fungal gene expression programs in response to the changing host environment and defenses. Therefore, transcriptional reprogramming of fungal pathogens is critical for fungal development and pathogenicity. Histone post-translational modification, one of the main mechanisms of epigenetic regulation, has been shown to play an important role in the regulation of gene expressions, and is involved in, e.g., fungal development, infection-related morphogenesis, environmental stress responses, biosynthesis of secondary metabolites, and pathogenicity. This review highlights recent findings and insights into regulatory mechanisms of histone methylation and acetylation in fungal development and pathogenicity, as well as their roles in modulating pathogenic fungi–host interactions.
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Affiliation(s)
- Yiling Lai
- CAS Key Laboratory of Insect Developmental and Evolutionary Biology, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Chinese Academy of Sciences (CAS), Shanghai 200032, China; (L.W.); (W.Z.)
- CAS Center for Excellence in Biotic Interactions, University of Chinese Academy of Sciences, Beijing 100049, China
- Correspondence: (Y.L.); (S.W.)
| | - Lili Wang
- CAS Key Laboratory of Insect Developmental and Evolutionary Biology, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Chinese Academy of Sciences (CAS), Shanghai 200032, China; (L.W.); (W.Z.)
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Weilu Zheng
- CAS Key Laboratory of Insect Developmental and Evolutionary Biology, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Chinese Academy of Sciences (CAS), Shanghai 200032, China; (L.W.); (W.Z.)
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Sibao Wang
- CAS Key Laboratory of Insect Developmental and Evolutionary Biology, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Chinese Academy of Sciences (CAS), Shanghai 200032, China; (L.W.); (W.Z.)
- CAS Center for Excellence in Biotic Interactions, University of Chinese Academy of Sciences, Beijing 100049, China
- Correspondence: (Y.L.); (S.W.)
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5
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Wang W, Chen X, Yang Z, Chen X, Li C, Wang M. Crystal structure of histone chaperone Vps75 from Candida albicans. Biochem Biophys Res Commun 2021; 578:136-141. [PMID: 34562653 DOI: 10.1016/j.bbrc.2021.09.030] [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: 09/12/2021] [Accepted: 09/15/2021] [Indexed: 11/25/2022]
Abstract
Vps75 is a histone chaperone that interacts with the fungal-specific histone acetyltransferase Rtt109 and stimulates its acetylation activity on histone H3. Here we report the crystal structure of Vps75 of Candida albicans, one of the most common fungal pathogens. CaVps75 exists as a headphone-like dimer that forms a large negatively charged region on its concave side, showing the potential to bind positively charged regions of histones. The distal ends of the concave side of the CaVps75 dimer are positively charged and each has one more α helix than yeast Vps75. CaVps75 exhibits ionic strength- and concentration-dependent higher oligomerization in solution. In the crystal, two dimers are bound through electrostatic interactions between charged regions on the concave side of their earmuff domains, and this inter-dimer interaction differs from the currently known inter-dimer interactions of Vps75s. Our results will help to understand the role of Vps75 in C. albicans.
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Affiliation(s)
- Wenfeng Wang
- Institutes of Physical Science and Information Technology, Anhui University, Hefei, 230601, Anhui, China; School of Life Sciences, Anhui University, Hefei, 230601, Anhui, China
| | - Xi Chen
- Institutes of Physical Science and Information Technology, Anhui University, Hefei, 230601, Anhui, China; School of Life Sciences, Anhui University, Hefei, 230601, Anhui, China
| | - Zhongmei Yang
- Institutes of Physical Science and Information Technology, Anhui University, Hefei, 230601, Anhui, China; School of Life Sciences, Anhui University, Hefei, 230601, Anhui, China
| | - Xiaolei Chen
- Institutes of Physical Science and Information Technology, Anhui University, Hefei, 230601, Anhui, China; School of Life Sciences, Anhui University, Hefei, 230601, Anhui, China
| | - Changrun Li
- Institutes of Physical Science and Information Technology, Anhui University, Hefei, 230601, Anhui, China
| | - Mingzhu Wang
- Institutes of Physical Science and Information Technology, Anhui University, Hefei, 230601, Anhui, China; School of Life Sciences, Anhui University, Hefei, 230601, Anhui, China; Key Laboratory of Human Microenvironment and Precision Medicine of Anhui Higher Education Institutes, Anhui University, Hefei, 230601, Anhui, China.
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6
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Graille M. Division of labor in epitranscriptomics: What have we learnt from the structures of eukaryotic and viral multimeric RNA methyltransferases? WILEY INTERDISCIPLINARY REVIEWS-RNA 2021; 13:e1673. [PMID: 34044474 DOI: 10.1002/wrna.1673] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2021] [Revised: 04/30/2021] [Accepted: 05/04/2021] [Indexed: 02/06/2023]
Abstract
The translation of an mRNA template into the corresponding protein is a highly complex and regulated choreography performed by ribosomes, tRNAs, and translation factors. Most RNAs involved in this process are decorated by multiple chemical modifications (known as epitranscriptomic marks) contributing to the efficiency, the fidelity, and the regulation of the mRNA translation process. Many of these epitranscriptomic marks are written by holoenzymes made of a catalytic subunit associated with an activating subunit. These holoenzymes play critical roles in cell development. Indeed, several mutations being identified in the genes encoding for those proteins are linked to human pathologies such as cancers and intellectual disorders for instance. This review describes the structural and functional properties of RNA methyltransferase holoenzymes, which when mutated often result in brain development pathologies. It illustrates how structurally different activating subunits contribute to the catalytic activity of these holoenzymes through common mechanistic trends that most likely apply to other classes of holoenzymes. This article is categorized under: RNA Processing > RNA Editing and Modification RNA Processing > Capping and 5' End Modifications.
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Affiliation(s)
- Marc Graille
- Laboratoire de Biologie Structurale de la Cellule (BIOC), CNRS, Ecole Polytechnique, IP Paris, Palaiseau Cedex, France
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7
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Akhavantabib N, Krzizike DD, Neumann V, D'Arcy S. Stoichiometry of Rtt109 complexes with Vps75 and histones H3-H4. Life Sci Alliance 2020; 3:3/11/e202000771. [PMID: 32913112 PMCID: PMC7494816 DOI: 10.26508/lsa.202000771] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Revised: 08/31/2020] [Accepted: 09/01/2020] [Indexed: 11/24/2022] Open
Abstract
The work determines the relative and absolute stoichiometry of a 5-chain protein complex involved in histone chaperoning and acetylation. Using sedimentation velocity and light scattering, it uncovers a dynamic equilibrium of complex self-association. Histone acetylation is one of many posttranslational modifications that affect nucleosome accessibility. Vps75 is a histone chaperone that stimulates Rtt109 acetyltransferase activity toward histones H3-H4 in yeast. In this study, we use sedimentation velocity and light scattering to characterize various Vps75–Rtt109 complexes, both with and without H3-H4. These complexes were previously ill-defined because of protein multivalency and oligomerization. We determine both relative and absolute stoichiometry and define the most pertinent and homogeneous complexes. We show that the Vps75 dimer contains two unequal binding sites for Rtt109, with the weaker binding site being dispensable for H3-H4 acetylation. We further show that the Vps75–Rtt109–(H3-H4) complex is in equilibrium between a 2:1:1 species and a 4:2:2 species. Using a dimerization mutant of H3, we show that this equilibrium is mediated by the four-helix bundle between the two copies of H3. We optimize the purity, yield, and homogeneity of Vps75–Rtt109 complexes and determine optimal conditions for solubility when H3-H4 is added. Our comprehensive biochemical and biophysical approach ultimately defines the large-scale preparation of Vps75–Rtt109–(H3-H4) complexes with precise stoichiometry. This is an essential prerequisite for ongoing high-resolution structural and functional analysis of this important multi-subunit complex.
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Affiliation(s)
- Noushin Akhavantabib
- Department of Chemistry and Biochemistry, The University of Texas at Dallas, Richardson, TX, USA
| | - Daniel D Krzizike
- Department of Biochemistry and Molecular Biology, Colorado State University, Fort Collins, CO, USA
| | - Victoria Neumann
- Department of Chemistry and Biochemistry, The University of Texas at Dallas, Richardson, TX, USA
| | - Sheena D'Arcy
- Department of Chemistry and Biochemistry, The University of Texas at Dallas, Richardson, TX, USA
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8
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Liao Z, Zhu Z, Li L, Wang L, Wang H, Jiang Y, Cao Y. Metabonomics on Candida albicans indicate the excessive H3K56ac is involved in the antifungal activity of Shikonin. Emerg Microbes Infect 2020; 8:1243-1253. [PMID: 31452461 PMCID: PMC6735332 DOI: 10.1080/22221751.2019.1657362] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Development of antifungal agents with novel mechanism and low toxicity are essential due to the prevalence of the infectious diseases caused by Candida albicans. The current study employed a new research method, which combined the ultra-high performance liquid chromatography with quadrupole time-of-flight mass spectrometry and gas chromatography-mass spectrometry, to investigate the intrinsic mechanism of Shikonin (SK) against C. albicans. The levels of 27 metabolites, which mainly involved in histone deacetylation, amino acid synthesis, lipid synthesis, nitrogen metabolism, tricarboxylic acid cycle, oxidative stress and glycolysis, were remarkably changed upon SK treatment. Specially, the down-regulation of nicotinamide (NAM) upon SK treatment indicated the suppression of the deacetylation of the histone H3 on lysine 56 residue (H3K56). Further experiment confirmed that the level of H3K56 acetylation (H3K56ac) was dramatically increased upon SK treatment which was mediated by HST3, the gene encoding the H3K56 deacetylase (Hst3p). Our results demonstrated that SK is the first natural compound reported to execute antifungal activity directly via boosting H3K56ac mediated by HST3. Importantly, this finding shed new light on the mechanisms to relieve the side effects or reverse the drug tolerance, as well as the development of agents for antifungal therapies.
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Affiliation(s)
- ZeBin Liao
- Department of Radiation Medicine, Faculty of Naval Medicine, Second Military Medical University , Shanghai , People's Republic of China.,Shanghai Skin Disease Hospital, Tongji University School of Medicine , Shanghai , People's Republic of China
| | - ZhenYu Zhu
- School of Pharmacy, Second Military Medical University , Shanghai , People's Republic of China
| | - Ling Li
- School of Pharmacy, Second Military Medical University , Shanghai , People's Republic of China
| | - Liang Wang
- School of Pharmacy, Second Military Medical University , Shanghai , People's Republic of China
| | - Hui Wang
- School of Pharmacy, Second Military Medical University , Shanghai , People's Republic of China
| | - YuanYing Jiang
- Department of Pharmacology, Shanghai Tenth People's Hospital, Tongji University School of Medicine , Shanghai , People's Republic of China
| | - YingYing Cao
- Shanghai Skin Disease Hospital, Tongji University School of Medicine , Shanghai , People's Republic of China
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9
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Cote JM, Kuo YM, Henry RA, Scherman H, Krzizike DD, Andrews AJ. Two factor authentication: Asf1 mediates crosstalk between H3 K14 and K56 acetylation. Nucleic Acids Res 2019; 47:7380-7391. [PMID: 31194870 DOI: 10.1093/nar/gkz508] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2018] [Revised: 05/27/2019] [Accepted: 06/07/2019] [Indexed: 12/18/2022] Open
Abstract
The ability of histone chaperone Anti-silencing factor 1 (Asf1) to direct acetylation of lysine 56 of histone H3 (H3K56ac) represents an important regulatory step in genome replication and DNA repair. In Saccharomyces cerevisiae, Asf1 interacts functionally with a second chaperone, Vps75, and the lysine acetyltransferase (KAT) Rtt109. Both Asf1 and Vps75 can increase the specificity of histone acetylation by Rtt109, but neither alter selectivity. However, changes in acetylation selectivity have been observed in histones extracted from cells, which contain a plethora of post-translational modifications. In the present study, we use a series of singly acetylated histones to test the hypothesis that histone pre-acetylation and histone chaperones function together to drive preferential acetylation of H3K56. We show that pre-acetylated H3K14ac/H4 functions with Asf1 to drive specific acetylation of H3K56 by Rtt109-Vps75. Additionally, we identified an exosite containing an acidic patch in Asf1 and show that mutations to this region alter Asf1-mediated crosstalk that changes Rtt109-Vps75 selectivity. Our proposed mechanism suggests that Gcn5 acetylates H3K14, recruiting remodeler complexes, allowing for the Asf1-H3K14ac/H4 complex to be acetylated at H3K56 by Rtt109-Vps75. This mechanism explains the conflicting biochemical data and the genetic links between Rtt109, Vps75, Gcn5 and Asf1 in the acetylation of H3K56.
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Affiliation(s)
- Joy M Cote
- Department of Cancer Biology, Fox Chase Cancer Center, Philadelphia, PA 19111, USA
| | - Yin-Ming Kuo
- Department of Cancer Biology, Fox Chase Cancer Center, Philadelphia, PA 19111, USA
| | - Ryan A Henry
- Department of Chemistry and Biochemistry, Wilkes University, Wilkes-Barre, PA 18766, USA
| | - Hataichanok Scherman
- The Histone Source, Department of Biochemistry and Molecular Biology, Colorado State University, Fort Collins, CO 80523, USA
| | - Daniel D Krzizike
- Department of Cancer Biology, Fox Chase Cancer Center, Philadelphia, PA 19111, USA
| | - Andrew J Andrews
- Department of Cancer Biology, Fox Chase Cancer Center, Philadelphia, PA 19111, USA
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10
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Danilenko N, Lercher L, Kirkpatrick J, Gabel F, Codutti L, Carlomagno T. Histone chaperone exploits intrinsic disorder to switch acetylation specificity. Nat Commun 2019; 10:3435. [PMID: 31387991 PMCID: PMC6684614 DOI: 10.1038/s41467-019-11410-7] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Accepted: 07/14/2019] [Indexed: 12/13/2022] Open
Abstract
Histones, the principal protein components of chromatin, contain long disordered sequences, which are extensively post-translationally modified. Although histone chaperones are known to control both the activity and specificity of histone-modifying enzymes, the mechanisms promoting modification of highly disordered substrates, such as lysine-acetylation within the N-terminal tail of histone H3, are not understood. Here, to understand how histone chaperones Asf1 and Vps75 together promote H3 K9-acetylation, we establish the solution structural model of the acetyltransferase Rtt109 in complex with Asf1 and Vps75 and the histone dimer H3:H4. We show that Vps75 promotes K9-acetylation by engaging the H3 N-terminal tail in fuzzy electrostatic interactions with its disordered C-terminal domain, thereby confining the H3 tail to a wide central cavity faced by the Rtt109 active site. These fuzzy interactions between disordered domains achieve localization of lysine residues in the H3 tail to the catalytic site with minimal loss of entropy, and may represent a common mechanism of enzymatic reactions involving highly disordered substrates.
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Affiliation(s)
- Nataliya Danilenko
- Leibniz University Hannover, Centre for Biomolecular Drug Research, Schneiderberg 38, D-30167, Hannover, Germany
| | - Lukas Lercher
- Leibniz University Hannover, Centre for Biomolecular Drug Research, Schneiderberg 38, D-30167, Hannover, Germany
| | - John Kirkpatrick
- Leibniz University Hannover, Centre for Biomolecular Drug Research, Schneiderberg 38, D-30167, Hannover, Germany.,Helmholtz Centre for Infection Research, Group of Structural Chemistry, Inhoffenstrasse 7, D-38124, Braunschweig, Germany
| | - Frank Gabel
- University Grenoble Alpes, CEA, CNRS IBS, 71 avenue des Martyrs, F-38044, Grenoble, France.,Institut Laue-Langevin, 71 avenue des Martyrs, F-38042, Grenoble, France
| | - Luca Codutti
- Leibniz University Hannover, Centre for Biomolecular Drug Research, Schneiderberg 38, D-30167, Hannover, Germany
| | - Teresa Carlomagno
- Leibniz University Hannover, Centre for Biomolecular Drug Research, Schneiderberg 38, D-30167, Hannover, Germany. .,Helmholtz Centre for Infection Research, Group of Structural Chemistry, Inhoffenstrasse 7, D-38124, Braunschweig, Germany.
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11
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Lercher L, Danilenko N, Kirkpatrick J, Carlomagno T. Structural characterization of the Asf1-Rtt109 interaction and its role in histone acetylation. Nucleic Acids Res 2019; 46:2279-2289. [PMID: 29300933 PMCID: PMC5861439 DOI: 10.1093/nar/gkx1283] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2017] [Accepted: 12/18/2017] [Indexed: 02/03/2023] Open
Abstract
Acetylation of histone H3 at lysine-56 by the histone acetyltransferase Rtt109 in lower eukaryotes is important for maintaining genomic integrity and is required for C. albicans pathogenicity. Rtt109 is activated by association with two different histone chaperones, Vps75 and Asf1, through an unknown mechanism. Here, we reveal that the Rtt109 C-terminus interacts directly with Asf1 and elucidate the structural basis of this interaction. In addition, we find that the H3 N-terminus can interact via the same interface on Asf1, leading to a competition between the two interaction partners. This, together with the recruitment and position of the substrate, provides an explanation of the role of the Rtt109 C-terminus in Asf1-dependent Rtt109 activation.
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Affiliation(s)
- Lukas Lercher
- BMWZ and Institute of Organic Chemistry, Leibniz Universität Hannover, Hannover, Germany
| | - Nataliya Danilenko
- BMWZ and Institute of Organic Chemistry, Leibniz Universität Hannover, Hannover, Germany
| | - John Kirkpatrick
- BMWZ and Institute of Organic Chemistry, Leibniz Universität Hannover, Hannover, Germany
| | - Teresa Carlomagno
- BMWZ and Institute of Organic Chemistry, Leibniz Universität Hannover, Hannover, Germany.,Research Group of NMR-based Structural Chemistry, Helmholtz Centre for Infection Research, Braunschweig, Germany
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12
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Chen Y, Zhang Y, Ye H, Dou Y, Lu D, Li X, Limper AH, Han J, Su D. Structural basis for the acetylation of histone H3K9 and H3K27 mediated by the histone chaperone Vps75 in Pneumocystis carinii. Signal Transduct Target Ther 2019; 4:14. [PMID: 31098304 PMCID: PMC6509256 DOI: 10.1038/s41392-019-0047-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2019] [Accepted: 03/26/2019] [Indexed: 02/05/2023] Open
Abstract
Rtt109 is a histone acetyltransferase (HAT) that is a potential therapeutic target in conditioned pathogenic fungi Pneumocystis carinii (P. carinii). The histone chaperone Vps75 can stimulate the Rtt109-dependent acetylation of several histone H3 lysines and preferentially acetylates H3K9 and H3K27 within canonical histone (H3-H4)2 tetramers. Vps75 shows two protein conformations assembled into dimeric and tetrameric forms, but the roles played by multimeric forms of Vps75 in Rtt109-mediated histone acetylation remain elusive. In P. carinii, we identified that Vps75 (PcVps75) dimers regulate H3K9 and H3K27 acetylation by directly interacting with histone (H3-H4)2 tetramers, rather than by forming a Vps75-Rtt109 complex. For PcVps75 tetramers, the major histone-binding surface is buried within a walnut-like structure in the absence of a histone cargo. Based on crystal structures of dimeric and tetrameric forms of PcVps75, as well as HAT assay data, we confirmed that residues 192E, 193D, 194E, 195E, and 196E and the disordered C-terminal tail (residues 224-250) of PcVps75 mediate interactions with histones and are important for the Rtt109 in P. carinii (PcRtt109)-mediated acetylation of H3K9 and H3K27, both in vitro and in yeast cells. Furthermore, expressing PcRtt109 alone or in combination with PcVps75 variants that cannot effectively bind histones could not fully restore cellular growth in the presence of genotoxic agents that block DNA replication owing to the absence of H3K9 and H3K27 acetylation. Together, these data indicate that the interaction between PcVps75 and histone (H3-H4)2 tetramers is a critical regulator of the Rtt109-mediated acetylation of H3K9 and H3K27.
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Affiliation(s)
- Yiping Chen
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu, Sichuan P. R. China
| | - Yang Zhang
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu, Sichuan P. R. China
| | - Hui Ye
- Center of Infectious Diseases, West China Hospital of Sichuan University, Chengdu, Sichuan P. R. China
| | - Yanshu Dou
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu, Sichuan P. R. China
| | - Deren Lu
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu, Sichuan P. R. China
| | - Xiaolu Li
- International Center for Translational Chinese Medicine, Sichuan Academy of Chinese Medicine Sciences, P.R. China, Chengdu, Sichuan P. R. China
| | - Andrew H. Limper
- Thoracic Diseases Research Unit, Mayo Clinic College of Medicine, Rochester, MN USA
| | - Junhong Han
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu, Sichuan P. R. China
| | - Dan Su
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu, Sichuan P. R. China
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13
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Abstract
Posttranslational modifications of proteins control many complex biological processes, including genome expression, chromatin dynamics, metabolism, and cell division through a language of chemical modifications. Improvements in mass spectrometry-based proteomics have demonstrated protein acetylation is a widespread and dynamic modification in the cell; however, many questions remain on the regulation and downstream effects, and an assessment of the overall acetylation stoichiometry is needed. In this chapter, we describe the determination of acetylation stoichiometry using data-independent acquisition mass spectrometry to expand the number of acetylation sites quantified. However, the increased depth of data-independent acquisition is limited by the spectral library used to deconvolute fragmentation spectra. We describe a powerful approach of subcellular fractionation in conjunction with offline prefractionation to increase the depth of the spectral library. This deep interrogation of subcellular compartments provides essential insights into the compartment-specific regulation and downstream functions of protein acetylation.
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14
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Cai Q, Wang JJ, Shao W, Ying SH, Feng MG. Rtt109-dependent histone H3 K56 acetylation and gene activity are essential for the biological control potential of Beauveria bassiana. PEST MANAGEMENT SCIENCE 2018; 74:2626-2635. [PMID: 29704296 DOI: 10.1002/ps.5054] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2018] [Revised: 03/28/2018] [Accepted: 04/23/2018] [Indexed: 06/08/2023]
Abstract
BACKGROUND Rtt109 is a histone acetyltransferase that catalyzes histone H3K56 acetylation required for genomic stability, DNA damage repair and virulence-related gene activity in yeast-like human pathogens but remains functionally unknown in fungal insect pathogens. This study seeks to elucidate the catalytic activity of a Rtt109 orthologue and its possible role in sustaining the biological control potential of Beauveria bassiana, a fungal entomopathogen. RESULTS Deletion of rtt109 in B. bassiana abolished histone H3K56 acetylation and triggered histone H2A-S129 phosphorylation. Consequently, the deletion mutant showed increased sensitivity to the stresses of DNA damage, oxidation, cell wall perturbation, high osmolarity and heat shock during colony growth, severe conidiation defects under normal culture conditions, reduced conidial hydrophobicity, decreased conidial UV-B resistance, and attenuated virulence through normal cuticle infection. These phenotypic changes correlated well with reduced transcript levels of many genes that encode the families of H2A-S129 dephosphorylation-related protein phosphatases, DNA damage-repairing factors, antioxidant enzymes, heat-shock proteins, key developmental activators, hydrophobins and cuticle-degrading Pr1 proteases respectively. CONCLUSION Rtt109 can acetylate H3K56 and dephosphorylate H2A-S129 in direct and indirect ways respectively, and hence has an essential role in sustaining the genomic stability and global gene activity required for conidiation capacity, environmental fitness and pest control potential in B. bassiana. © 2018 Society of Chemical Industry.
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Affiliation(s)
- Qing Cai
- Institute of Microbiology, College of Life Sciences, Zhejiang University, Hangzhou, People's Republic of China
| | - Juan-Juan Wang
- Institute of Microbiology, College of Life Sciences, Zhejiang University, Hangzhou, People's Republic of China
- School of Biological Science and Biotechnology, University of Jinan, Jinan, People's Republic of China
| | - Wei Shao
- Institute of Microbiology, College of Life Sciences, Zhejiang University, Hangzhou, People's Republic of China
| | - Sheng-Hua Ying
- Institute of Microbiology, College of Life Sciences, Zhejiang University, Hangzhou, People's Republic of China
| | - Ming-Guang Feng
- Institute of Microbiology, College of Life Sciences, Zhejiang University, Hangzhou, People's Republic of China
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15
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Zhang L, Serra-Cardona A, Zhou H, Wang M, Yang N, Zhang Z, Xu RM. Multisite Substrate Recognition in Asf1-Dependent Acetylation of Histone H3 K56 by Rtt109. Cell 2018; 174:818-830.e11. [PMID: 30057113 DOI: 10.1016/j.cell.2018.07.005] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2018] [Revised: 04/08/2018] [Accepted: 07/03/2018] [Indexed: 12/19/2022]
Abstract
Rtt109 is a unique histone acetyltransferase acetylating histone H3 lysine 56 (H3K56), a modification critical for DNA replication-coupled nucleosome assembly and genome stability. In cells, histone chaperone Asf1 is essential for H3K56 acetylation, yet the mechanisms for H3K56 specificity and Asf1 requirement remain unknown. We have determined the crystal structure of the Rtt109-Asf1-H3-H4 complex and found that unwinding of histone H3 αN, where K56 is normally located, and stabilization of the very C-terminal β strand of histone H4 by Asf1 are prerequisites for H3K56 acetylation. Unexpectedly, an interaction between Rtt109 and the central helix of histone H3 is also required. The observed multiprotein, multisite substrate recognition mechanism among histone modification enzymes provides mechanistic understandings of Rtt109 and Asf1 in H3K56 acetylation, as well as valuable insights into substrate recognition by histone modification enzymes in general.
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Affiliation(s)
- Lin Zhang
- National Laboratory of Biomacromolecules, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, 100101 Beijing, China; University of Chinese Academy of Sciences, 100049 Beijing, China
| | - Albert Serra-Cardona
- Institute for Cancer Genetics, Departments of Pediatrics and Genetics and Development and Irving Cancer Research Center, Vagelos College of Physicians and Surgeons, Columbia University, New York, NY 10032, USA
| | - Hui Zhou
- Institute for Cancer Genetics, Departments of Pediatrics and Genetics and Development and Irving Cancer Research Center, Vagelos College of Physicians and Surgeons, Columbia University, New York, NY 10032, USA
| | - Mingzhu Wang
- National Laboratory of Biomacromolecules, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, 100101 Beijing, China
| | - Na Yang
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research, Nankai University, 300353 Tianjin, China
| | - Zhiguo Zhang
- Institute for Cancer Genetics, Departments of Pediatrics and Genetics and Development and Irving Cancer Research Center, Vagelos College of Physicians and Surgeons, Columbia University, New York, NY 10032, USA.
| | - Rui-Ming Xu
- National Laboratory of Biomacromolecules, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, 100101 Beijing, China; University of Chinese Academy of Sciences, 100049 Beijing, China.
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16
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Marcianò G, Da Vela S, Tria G, Svergun DI, Byron O, Huang DT. Structure-specific recognition protein-1 (SSRP1) is an elongated homodimer that binds histones. J Biol Chem 2018; 293:10071-10083. [PMID: 29764934 PMCID: PMC6028955 DOI: 10.1074/jbc.ra117.000994] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2017] [Revised: 05/14/2018] [Indexed: 12/31/2022] Open
Abstract
The histone chaperone complex facilitates chromatin transcription (FACT) plays important roles in DNA repair, replication, and transcription. In the formation of this complex, structure-specific recognition protein-1 (SSRP1) heterodimerizes with suppressor of Ty 16 (SPT16). SSRP1 also has SPT16-independent functions, but how SSRP1 functions alone remains elusive. Here, using analytical ultracentrifugation (AUC) and small-angle X-ray scattering (SAXS) techniques, we characterized human SSRP1 and that from the amoeba Dictyostelium discoideum and show that both orthologs form an elongated homodimer in solution. We found that substitutions in the SSRP1 pleckstrin homology domain known to bind SPT16 also disrupt SSRP1 homodimerization. Moreover, AUC and SAXS analyses revealed that SSRP1 homodimerization and heterodimerization with SPT16 (resulting in FACT) involve the same SSRP1 surface, namely the PH2 region, and that the FACT complex contains only one molecule of SSRP1. These observations suggest that SSRP1 homo- and heterodimerization might be mutually exclusive. Moreover, isothermal titration calorimetry analyses disclosed that SSRP1 binds both histones H2A-H2B and H3-H4 and that disruption of SSRP1 homodimerization decreases its histone-binding affinity. Together, our results provide evidence for regulation of SSRP1 by homodimerization and suggest a potential role for homodimerization in facilitating SPT16-independent functions of SSRP1.
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Affiliation(s)
- Gabriele Marcianò
- From the Cancer Research UK Beatson Institute, Garscube Estate, Switchback Road, and the Institute of Cancer Sciences, University of Glasgow, Glasgow G61 1BD, Scotland, United Kingdom,
| | - Stefano Da Vela
- the European Molecular Biology Laboratory, Hamburg Outstation, EMBL ℅ DESY, Notkestrasse 85, 22607 Hamburg, Germany, and
| | - Giancarlo Tria
- the European Molecular Biology Laboratory, Hamburg Outstation, EMBL ℅ DESY, Notkestrasse 85, 22607 Hamburg, Germany, and
| | - Dmitri I Svergun
- the European Molecular Biology Laboratory, Hamburg Outstation, EMBL ℅ DESY, Notkestrasse 85, 22607 Hamburg, Germany, and
| | - Olwyn Byron
- the School of Life Sciences, University of Glasgow, Glasgow G12 8QQ, United Kingdom
| | - Danny T Huang
- From the Cancer Research UK Beatson Institute, Garscube Estate, Switchback Road, and the Institute of Cancer Sciences, University of Glasgow, Glasgow G61 1BD, Scotland, United Kingdom,
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17
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Hammond CM, Strømme CB, Huang H, Patel DJ, Groth A. Histone chaperone networks shaping chromatin function. Nat Rev Mol Cell Biol 2017; 18:141-158. [PMID: 28053344 DOI: 10.1038/nrm.2016.159] [Citation(s) in RCA: 337] [Impact Index Per Article: 48.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The association of histones with specific chaperone complexes is important for their folding, oligomerization, post-translational modification, nuclear import, stability, assembly and genomic localization. In this way, the chaperoning of soluble histones is a key determinant of histone availability and fate, which affects all chromosomal processes, including gene expression, chromosome segregation and genome replication and repair. Here, we review the distinct structural and functional properties of the expanding network of histone chaperones. We emphasize how chaperones cooperate in the histone chaperone network and via co-chaperone complexes to match histone supply with demand, thereby promoting proper nucleosome assembly and maintaining epigenetic information by recycling modified histones evicted from chromatin.
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Affiliation(s)
- Colin M Hammond
- Biotech Research and Innovation Centre (BRIC) and Centre for Epigenetics, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen DK-2200, Denmark
| | - Caroline B Strømme
- Biotech Research and Innovation Centre (BRIC) and Centre for Epigenetics, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen DK-2200, Denmark
| | - Hongda Huang
- Structural Biology Program, Memorial Sloan-Kettering Cancer Center, New York, New York 10065, USA
| | - Dinshaw J Patel
- Structural Biology Program, Memorial Sloan-Kettering Cancer Center, New York, New York 10065, USA
| | - Anja Groth
- Biotech Research and Innovation Centre (BRIC) and Centre for Epigenetics, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen DK-2200, Denmark
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18
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Stejskal S, Stepka K, Tesarova L, Stejskal K, Matejkova M, Simara P, Zdrahal Z, Koutna I. Cell cycle-dependent changes in H3K56ac in human cells. Cell Cycle 2016; 14:3851-63. [PMID: 26645646 DOI: 10.1080/15384101.2015.1106760] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
The incorporation of histone H3 with an acetylated lysine 56 (H3K56ac) into the nucleosome is important for chromatin remodeling and serves as a marker of new nucleosomes during DNA replication and repair in yeast. However, in human cells, the level of H3K56ac is greatly reduced, and its role during the cell cycle is controversial. Our aim was to determine the potential of H3K56ac to regulate cell cycle progression in different human cell lines. A significant increase in the number of H3K56ac foci, but not in H3K56ac protein levels, was observed during the S and G2 phases in cancer cell lines, but was not observed in embryonic stem cell lines. Despite this increase, the H3K56ac signal was not present in late replication chromatin, and H3K56ac protein levels did not decrease after the inhibition of DNA replication. H3K56ac was not tightly associated with the chromatin and was primarily localized to active chromatin regions. Our results support the role of H3K56ac in transcriptionally active chromatin areas but do not confirm H3K56ac as a marker of newly synthetized nucleosomes in DNA replication.
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Affiliation(s)
- Stanislav Stejskal
- a Centre for Biomedical Image Analysis; Faculty of Informatics; Masaryk University ; Brno , Czech Republic
| | - Karel Stepka
- a Centre for Biomedical Image Analysis; Faculty of Informatics; Masaryk University ; Brno , Czech Republic
| | - Lenka Tesarova
- a Centre for Biomedical Image Analysis; Faculty of Informatics; Masaryk University ; Brno , Czech Republic
| | - Karel Stejskal
- b Research Group - Proteomics; Central European Institute of Technology; Masaryk University ; Brno , Czech Republic.,c National Centre for Biomolecular Research; Faculty of Science; Masaryk University ; Brno , Czech Republic
| | - Martina Matejkova
- a Centre for Biomedical Image Analysis; Faculty of Informatics; Masaryk University ; Brno , Czech Republic
| | - Pavel Simara
- a Centre for Biomedical Image Analysis; Faculty of Informatics; Masaryk University ; Brno , Czech Republic
| | - Zbynek Zdrahal
- b Research Group - Proteomics; Central European Institute of Technology; Masaryk University ; Brno , Czech Republic.,c National Centre for Biomolecular Research; Faculty of Science; Masaryk University ; Brno , Czech Republic
| | - Irena Koutna
- a Centre for Biomedical Image Analysis; Faculty of Informatics; Masaryk University ; Brno , Czech Republic
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19
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Hammond CM, Sundaramoorthy R, Larance M, Lamond A, Stevens MA, El-Mkami H, Norman DG, Owen-Hughes T. The histone chaperone Vps75 forms multiple oligomeric assemblies capable of mediating exchange between histone H3-H4 tetramers and Asf1-H3-H4 complexes. Nucleic Acids Res 2016; 44:6157-72. [PMID: 27036862 PMCID: PMC5291247 DOI: 10.1093/nar/gkw209] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2015] [Accepted: 03/17/2016] [Indexed: 11/14/2022] Open
Abstract
Vps75 is a histone chaperone that has been historically characterized as homodimer by X-ray crystallography. In this study, we present a crystal structure containing two related tetrameric forms of Vps75 within the crystal lattice. We show Vps75 associates with histones in multiple oligomers. In the presence of equimolar H3–H4 and Vps75, the major species is a reconfigured Vps75 tetramer bound to a histone H3–H4 tetramer. However, in the presence of excess histones, a Vps75 dimer bound to a histone H3–H4 tetramer predominates. We show the Vps75–H3–H4 interaction is compatible with the histone chaperone Asf1 and deduce a structural model of the Vps75–Asf1-H3–H4 (VAH) co-chaperone complex using the Pulsed Electron-electron Double Resonance (PELDOR) technique and cross-linking MS/MS distance restraints. The model provides a molecular basis for the involvement of both Vps75 and Asf1 in Rtt109 catalysed histone H3 K9 acetylation. In the absence of Asf1 this model can be used to generate a complex consisting of a reconfigured Vps75 tetramer bound to a H3–H4 tetramer. This provides a structural explanation for many of the complexes detected biochemically and illustrates the ability of Vps75 to interact with dimeric or tetrameric H3–H4 using the same interaction surface.
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Affiliation(s)
- Colin M Hammond
- Centre for Gene Regulation and Expression, School of Life Sciences, University of Dundee, Dundee DD1 5EH, UK
| | | | - Mark Larance
- Centre for Gene Regulation and Expression, School of Life Sciences, University of Dundee, Dundee DD1 5EH, UK
| | - Angus Lamond
- Centre for Gene Regulation and Expression, School of Life Sciences, University of Dundee, Dundee DD1 5EH, UK
| | - Michael A Stevens
- Nucleic Acids Structure Research Group, University of Dundee, Dundee DD1 5EH, UK
| | - Hassane El-Mkami
- School of Physics and Astronomy, University of St Andrews, St Andrews, KY16 9SS, UK
| | - David G Norman
- Nucleic Acids Structure Research Group, University of Dundee, Dundee DD1 5EH, UK
| | - Tom Owen-Hughes
- Centre for Gene Regulation and Expression, School of Life Sciences, University of Dundee, Dundee DD1 5EH, UK
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20
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Yuan H, Marmorstein R. Histone acetyltransferases: Rising ancient counterparts to protein kinases. Biopolymers 2016; 99:98-111. [PMID: 23175385 DOI: 10.1002/bip.22128] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2012] [Revised: 07/01/2012] [Accepted: 07/06/2012] [Indexed: 01/19/2023]
Abstract
Protein kinases catalyze phosphorylation, a posttranslational modification widely utilized in cell signaling. Histone acetyltransferases (HATs) catalyze a counterpart posttranslational modification of acetylation which marks histones for epigenetic signaling but in some cases modifies non-histone proteins to mediate other cellular activities. In addition, recent proteomic studies have revealed that thousands of proteins are acetylated throughout the cell to regulate diverse biological processes, thus placing acetyltransferases on the same playing field as kinases. Emerging biochemical and structural data further supports mechanistic and biological links between the two enzyme families. In this article, we will review what is known to date about the structure, catalysis and mode of regulation of HAT enzymes and draw analogies, where relevant, to protein kinases. This comparison reveals that HATs may be rising ancient counterparts to protein kinases.
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Affiliation(s)
- Hua Yuan
- Program in Gene Expression and Regulation, The Wistar Institute, Philadelphia, PA 19104
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21
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Guan Z, Liu H. The WOR1 5' untranslated region regulates white-opaque switching in Candida albicans by reducing translational efficiency. Mol Microbiol 2015; 97:125-38. [PMID: 25831958 PMCID: PMC4552353 DOI: 10.1111/mmi.13014] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/30/2015] [Indexed: 12/25/2022]
Abstract
The human fungal pathogen Candida albicans undergoes white‐opaque phenotypic switching, which enhances its adaptation to host niches. Switching is controlled by a transcriptional regulatory network of interlocking feedback loops acting on the transcription of WOR1, the master regulator of white‐opaque switching, but regulation of the network on the translational level is not yet explored. Here, we show that the long 5′ untranslated region of WOR1 regulates the white‐opaque phenotype. Deletion of the WOR1 5′ UTR promotes white‐to‐opaque switching and stabilizes the opaque state. The WOR1 5′ UTR reduces translational efficiency and the association of the transcript with polysomes. Reduced polysome association was observed for additional key regulators of cell fate and morphology with long 5′ UTR as well. Overall, we find a novel regulatory step of white‐opaque switching at the translational level. This translational regulation is implicated for many key regulators of cell fate and morphology in C. albicans.
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Affiliation(s)
- Zhiyun Guan
- Department of Biological Chemistry, University of California, Irvine, CA, USA
| | - Haoping Liu
- Department of Biological Chemistry, University of California, Irvine, CA, USA
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22
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Kuo YM, Henry RA, Huang L, Chen X, Stargell LA, Andrews AJ. Utilizing targeted mass spectrometry to demonstrate Asf1-dependent increases in residue specificity for Rtt109-Vps75 mediated histone acetylation. PLoS One 2015; 10:e0118516. [PMID: 25781956 PMCID: PMC4364511 DOI: 10.1371/journal.pone.0118516] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2014] [Accepted: 01/17/2015] [Indexed: 11/19/2022] Open
Abstract
In Saccharomyces cerevisiae, Rtt109, a lysine acetyltransferase (KAT), associates with a histone chaperone, either Vps75 or Asf1. It has been proposed that these chaperones alter the selectivity of Rtt109 or which residues it preferentially acetylates. In the present study, we utilized a label-free quantitative mass spectrometry-based method to determine the steady-state kinetic parameters of acetylation catalyzed by Rtt109-Vps75 on H3 monomer, H3/H4 tetramer, and H3/H4-Asf1 complex. These results show that among these histone conformations, only H3K9 and H3K23 are significantly acetylated under steady-state conditions and that Asf1 promotes H3/H4 acetylation by Rtt109-Vps75. Asf1 equally increases the Rtt109-Vps75 specificity for both of these residues with a maximum stoichiometry of 1:1 (Asf1 to H3/H4), but does not alter the selectivity between these two residues. These data suggest that the H3/H4-Asf1 complex is a substrate for Rtt109-Vps75 without altering selectivity between residues. The deletion of either Rtt109 or Asf1 in vivo results in the same reduction of H3K9 acetylation, suggesting that Asf1 is required for efficient H3K9 acetylation both in vitro and in vivo. Furthermore, we found that the acetylation preference of Rtt109-Vps75 could be directed to H3K56 when those histones already possess modifications, such as those found on histones purified from chicken erythrocytes. Taken together, Vps75 and Asf1 both enhance Rtt109 acetylation for H3/H4, although via different mechanisms, but have little impact on the residue selectivity. Importantly, these results provide evidence that histone chaperones can work together via interactions with either the enzyme or the substrate to more efficiently acetylate histones.
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Affiliation(s)
- Yin-Ming Kuo
- Department of Cancer Biology, Fox Chase Cancer Center, Philadelphia, Pennsylvania, United States of America
| | - Ryan A. Henry
- Department of Cancer Biology, Fox Chase Cancer Center, Philadelphia, Pennsylvania, United States of America
| | - Liangqun Huang
- Department of Biochemistry and Molecular Biology, Colorado State University, Fort Collins, Colorado, United States of America
| | - Xu Chen
- Department of Biochemistry and Molecular Biology, Colorado State University, Fort Collins, Colorado, United States of America
| | - Laurie A. Stargell
- Department of Biochemistry and Molecular Biology, Colorado State University, Fort Collins, Colorado, United States of America
| | - Andrew J. Andrews
- Department of Cancer Biology, Fox Chase Cancer Center, Philadelphia, Pennsylvania, United States of America
- * E-mail:
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23
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Histone exchange, chromatin structure and the regulation of transcription. Nat Rev Mol Cell Biol 2015; 16:178-89. [DOI: 10.1038/nrm3941] [Citation(s) in RCA: 650] [Impact Index Per Article: 72.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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24
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Dahlin JL, Chen X, Walters MA, Zhang Z. Histone-modifying enzymes, histone modifications and histone chaperones in nucleosome assembly: Lessons learned from Rtt109 histone acetyltransferases. Crit Rev Biochem Mol Biol 2014; 50:31-53. [PMID: 25365782 DOI: 10.3109/10409238.2014.978975] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
During DNA replication, nucleosomes ahead of replication forks are disassembled to accommodate replication machinery. Following DNA replication, nucleosomes are then reassembled onto replicated DNA using both parental and newly synthesized histones. This process, termed DNA replication-coupled nucleosome assembly (RCNA), is critical for maintaining genome integrity and for the propagation of epigenetic information, dysfunctions of which have been implicated in cancers and aging. In recent years, it has been shown that RCNA is carefully orchestrated by a series of histone modifications, histone chaperones and histone-modifying enzymes. Interestingly, many features of RCNA are also found in processes involving DNA replication-independent nucleosome assembly like histone exchange and gene transcription. In yeast, histone H3 lysine K56 acetylation (H3K56ac) is found in newly synthesized histone H3 and is critical for proper nucleosome assembly and for maintaining genomic stability. The histone acetyltransferase (HAT) regulator of Ty1 transposition 109 (Rtt109) is the sole enzyme responsible for H3K56ac in yeast. Much research has centered on this particular histone modification and histone-modifying enzyme. This Critical Review summarizes much of our current understanding of nucleosome assembly and highlights many important insights learned from studying Rtt109 HATs in fungi. We highlight some seminal features in nucleosome assembly conserved in mammalian systems and describe some of the lingering questions in the field. Further studying fungal and mammalian chromatin assembly may have important public health implications, including deeper understandings of human cancers and aging as well as the pursuit of novel anti-fungal therapies.
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Affiliation(s)
- Jayme L Dahlin
- Department of Molecular Pharmacology and Experimental Therapeutics, Mayo Clinic College of Medicine , Rochester, MN , USA
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25
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Marmorstein R, Zhou MM. Writers and readers of histone acetylation: structure, mechanism, and inhibition. Cold Spring Harb Perspect Biol 2014; 6:a018762. [PMID: 24984779 DOI: 10.1101/cshperspect.a018762] [Citation(s) in RCA: 364] [Impact Index Per Article: 36.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Histone acetylation marks are written by histone acetyltransferases (HATs) and read by bromodomains (BrDs), and less commonly by other protein modules. These proteins regulate many transcription-mediated biological processes, and their aberrant activities are correlated with several human diseases. Consequently, small molecule HAT and BrD inhibitors with therapeutic potential have been developed. Structural and biochemical studies of HATs and BrDs have revealed that HATs fall into distinct subfamilies containing a structurally related core for cofactor binding, but divergent flanking regions for substrate-specific binding, catalysis, and autoregulation. BrDs adopt a conserved left-handed four-helix bundle to recognize acetyllysine; divergent loop residues contribute to substrate-specific acetyllysine recognition.
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Affiliation(s)
- Ronen Marmorstein
- Program in Gene Expression and Regulation, Wistar Institute, and Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania, 19104
| | - Ming-Ming Zhou
- Department of Structural and Chemical Biology, Icahn School of Medicine at Mount Sinai, New York, New York 10065
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26
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Bowman A, Hammond CM, Stirling A, Ward R, Shang W, El-Mkami H, Robinson DA, Svergun DI, Norman DG, Owen-Hughes T. The histone chaperones Vps75 and Nap1 form ring-like, tetrameric structures in solution. Nucleic Acids Res 2014; 42:6038-51. [PMID: 24688059 PMCID: PMC4027167 DOI: 10.1093/nar/gku232] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
NAP-1 fold histone chaperones play an important role in escorting histones to and from sites of nucleosome assembly and disassembly. The two NAP-1 fold histone chaperones in budding yeast, Vps75 and Nap1, have previously been crystalized in a characteristic homodimeric conformation. In this study, a combination of small angle X-ray scattering, multi angle light scattering and pulsed electron–electron double resonance approaches were used to show that both Vps75 and Nap1 adopt ring-shaped tetrameric conformations in solution. This suggests that the formation of homotetramers is a common feature of NAP-1 fold histone chaperones. The tetramerisation of NAP-1 fold histone chaperones may act to shield acidic surfaces in the absence of histone cargo thus providing a ‘self-chaperoning’ type mechanism.
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Affiliation(s)
- Andrew Bowman
- Centre for Gene Regulation and Expression, University of Dundee, Dundee, DD1 5EH, UK
| | - Colin M Hammond
- Centre for Gene Regulation and Expression, University of Dundee, Dundee, DD1 5EH, UK
| | - Andrew Stirling
- Centre for Gene Regulation and Expression, University of Dundee, Dundee, DD1 5EH, UK
| | - Richard Ward
- Nucleic Acids Structure Research Group, University of Dundee, Dundee, DD1 5EH, UK
| | - Weifeng Shang
- European Molecular Biology Laboratory, Hamburg Outstation, c/o DESY, Notkestrasse 85, D-22603 Hamburg, Germany
| | - Hassane El-Mkami
- School of Physics and Astronomy, University of St Andrews, St Andrews FE2 4KM, UK
| | - David A Robinson
- Division of Biological Chemistry and Drug Discovery, University of Dundee, Dundee, DD1 5EH, UK
| | - Dmitri I Svergun
- European Molecular Biology Laboratory, Hamburg Outstation, c/o DESY, Notkestrasse 85, D-22603 Hamburg, Germany
| | - David G Norman
- Nucleic Acids Structure Research Group, University of Dundee, Dundee, DD1 5EH, UK
| | - Tom Owen-Hughes
- Centre for Gene Regulation and Expression, University of Dundee, Dundee, DD1 5EH, UK
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Secci D, Carradori S, Bizzarri B, Bolasco A, Ballario P, Patramani Z, Fragapane P, Vernarecci S, Canzonetta C, Filetici P. Synthesis of a novel series of thiazole-based histone acetyltransferase inhibitors. Bioorg Med Chem 2014; 22:1680-9. [DOI: 10.1016/j.bmc.2014.01.022] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2013] [Revised: 12/20/2013] [Accepted: 01/16/2014] [Indexed: 10/25/2022]
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Annunziato AT. Assembling chromatin: the long and winding road. BIOCHIMICA ET BIOPHYSICA ACTA-GENE REGULATORY MECHANISMS 2014; 1819:196-210. [PMID: 24459722 DOI: 10.1016/j.bbagrm.2011.07.005] [Citation(s) in RCA: 65] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
It has been over 35 years since the acceptance of the "chromatin subunit" hypothesis, and the recognition that nucleosomes are the fundamental repeating units of chromatin fibers. Major subjects of inquiry in the intervening years have included the steps involved in chromatin assembly, and the chaperones that escort histones to DNA. The following commentary offers an historical perspective on inquiries into the processes by which nucleosomes are assembled on replicating and nonreplicating chromatin. This article is part of a Special Issue entitled: Histone chaperones and Chromatin assembly.
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29
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Maintenance of heterochromatin boundary and nucleosome composition at promoters by the Asf1 histone chaperone and SWR1-C chromatin remodeler in Saccharomyces cerevisiae. Genetics 2014; 197:133-45. [PMID: 24578349 DOI: 10.1534/genetics.114.162909] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Chromatin remodeling complexes cooperate to regulate gene promoters and to define chromatin neighborhoods. Here, we identified genetic and functional connections between two silencing-related chromatin factors in the maintenance of native heterochromatic structures and nucleosome composition at promoters. Building on a previously reported link between the histone chaperone Asf1 and the Yaf9 subunit of the SWR1-C chromatin remodeler, we found that ASF1 broadly interacted with genes encoding for SWR1-C subunits. Asf1 and Yaf9 were required for maintaining expression of heterochromatin-proximal genes and they worked cooperatively to prevent repression of telomere-proximal genes by limiting the spread of SIR complexes into nearby regions. Genome-wide Sir2 profiling, however, revealed that the cooperative heterochromatin regulation of Asf1 and SWR1-C occurred only on a subset of yeast telomeres. Extensive analyses demonstrated that formation of aberrant heterochromatin structures in the absence of ASF1 and YAF9 was not causal for the pronounced growth and transcriptional defects in cells lacking both these factors. Instead, genetic and molecular analysis revealed that H3K56 acetylation was required for efficient deposition of H2A.Z at subtelomeric and euchromatic gene promoters, pointing to a role for Asf1-dependent H3K56 acetylation in SWR1-C biology.
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30
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The carboxyl terminus of Rtt109 functions in chaperone control of histone acetylation. EUKARYOTIC CELL 2013; 12:654-64. [PMID: 23457193 DOI: 10.1128/ec.00291-12] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Rtt109 is a fungal histone acetyltransferase (HAT) that catalyzes histone H3 acetylation functionally associated with chromatin assembly. Rtt109-mediated H3 acetylation involves two histone chaperones, Asf1 and Vps75. In vivo, Rtt109 requires both chaperones for histone H3 lysine 9 acetylation (H3K9ac) but only Asf1 for full H3K56ac. In vitro, Rtt109-Vps75 catalyzes both H3K9ac and H3K56ac, whereas Rtt109-Asf1 catalyzes only H3K56ac. In this study, we extend the in vitro chaperone-associated substrate specificity of Rtt109 by showing that it acetylates vertebrate linker histone in the presence of Vps75 but not Asf1. In addition, we demonstrate that in Saccharomyces cerevisiae a short basic sequence at the carboxyl terminus of Rtt109 (Rtt109C) is required for H3K9ac in vivo. Furthermore, through in vitro and in vivo studies, we demonstrate that Rtt109C is required for optimal H3K56ac by the HAT in the presence of full-length Asf1. When Rtt109C is absent, Vps75 becomes important for H3K56ac by Rtt109 in vivo. In addition, we show that lysine 290 (K290) in Rtt109 is required in vivo for Vps75 to enhance the activity of the HAT. This is the first in vivo evidence for a role for Vps75 in H3K56ac. Taken together, our results contribute to a better understanding of chaperone control of Rtt109-mediated H3 acetylation.
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31
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Kormendi V, Szyk A, Piszczek G, Roll-Mecak A. Crystal structures of tubulin acetyltransferase reveal a conserved catalytic core and the plasticity of the essential N terminus. J Biol Chem 2012; 287:41569-75. [PMID: 23105108 DOI: 10.1074/jbc.c112.421222] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Tubulin acetyltransferase (TAT) acetylates Lys-40 of α-tubulin in the microtubule lumen. TAT is inefficient, and its activity is enhanced when tubulin is incorporated in microtubules. Acetylation is associated with stable microtubules and regulates the binding of microtubule motors and associated proteins. TAT is important in neuronal polarity and mechanosensation, and decreased tubulin acetylation levels are associated with axonal transport defects and neurodegeneration. We present the first structure of TAT in complex with acetyl-CoA (Ac-CoA) at 2.7 Å resolution. The structure reveals a conserved stable catalytic core shared with other GCN5 superfamily acetyltransferases consisting of a central β-sheet flanked by α-helices and a C-terminal β-hairpin unique to TAT. Structure-guided mutagenesis establishes the molecular determinants for Ac-CoA and tubulin substrate recognition. The wild-type TAT construct is a monomer in solution. We identify a metastable interface between the conserved core and N-terminal domain that modulates the oligomerization of TAT in solution and is essential for activity. The 2.45 Å resolution structure of an inactive TAT construct with an active site point mutation near this interface reveals a domain-swapped dimer in which the functionally essential N terminus shows evidence of marked structural plasticity. The sequence segment corresponding to this structurally plastic region in TAT has been implicated in substrate recognition in other GCN5 superfamily acetyltransferases. Our structures provide a rational platform for the mechanistic dissection of TAT activity and the design of TAT inhibitors with therapeutic potential in neuronal regeneration.
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Affiliation(s)
- Vasilisa Kormendi
- Cell Biology and Biophysics Unit, NINDS, National Institutes of Health, Bethesda, Maryland 20892, USA
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32
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Abshiru N, Ippersiel K, Tang Y, Yuan H, Marmorstein R, Verreault A, Thibault P. Chaperone-mediated acetylation of histones by Rtt109 identified by quantitative proteomics. J Proteomics 2012; 81:80-90. [PMID: 23036725 DOI: 10.1016/j.jprot.2012.09.026] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2012] [Accepted: 09/23/2012] [Indexed: 02/04/2023]
Abstract
Rtt109 is a fungal-specific histone acetyltransferase (HAT) that associates with either Vps75 or Asf1 to acetylate histone H3. Recent biochemical and structural studies suggest that site-specific acetylation of H3 by Rtt109 is dictated by the binding chaperone where Rtt109-Asf1 acetylates K56, while Rtt109-Vps75 acetylates K9 and K27. To gain further insights into the roles of Vps75 and Asf1 in directing site-specific acetylation of H3, we used quantitative proteomics to profile the global and site-specific changes in H3 and H4 during in vitro acetylation assays with Rtt109 and its chaperones. Our analyses showed that Rtt109-Vps75 preferentially acetylates H3 K9 and K23, the former residue being the major acetylation site. At high enzyme-to-substrate ratio, Rtt109 also acetylated K14, K18, K27 and to a lower extent K56 of histone H3. Importantly, this study revealed that in contrast to Rtt109-Vps75, Rtt109-Asf1 displayed a far greater site-specificity, with K56 being the primary site of acetylation. For the first time, we also report the acetylation of histone H4 K12 by Rtt109-Vps75, whereas Rtt109-Asf1 showed no detectable activity toward H4. This article is part of a Special Issue entitled: From protein structures to clinical applications.
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Affiliation(s)
- Nebiyu Abshiru
- Institute for Research in Immunology and Cancer, Université de Montréal, Montréal, Canada
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33
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Abstract
The eukaryotic processes of nucleosome assembly and disassembly govern chromatin dynamics, in which histones exchange in a highly regulated manner to promote genome accessibility for all DNA-dependent processes. This regulation is partly carried out by histone chaperones, which serve multifaceted roles in co-ordinating the interactions of histone proteins with modification enzymes, nucleosome remodellers, other histone chaperones and nucleosomal DNA. The molecular details of the processes by which histone chaperones promote delivery of histones among their many functional partners are still largely undefined, but promise to offer insights into epigenome maintenance. In the present paper, we review recent findings on the histone chaperone interactions that guide the assembly of histones H3 and H4 into chromatin. This evidence supports the concepts of histone post-translational modifications and specific histone chaperone interactions as guiding principles for histone H3/H4 transactions during chromatin assembly.
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34
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Lopes da Rosa J, Kaufman PD. Chromatin-mediated Candida albicans virulence. BIOCHIMICA ET BIOPHYSICA ACTA 2012; 1819:349-55. [PMID: 21888998 PMCID: PMC3243783 DOI: 10.1016/j.bbagrm.2011.08.007] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2011] [Revised: 08/13/2011] [Accepted: 08/16/2011] [Indexed: 10/17/2022]
Abstract
Candida albicans is the most prevalent human fungal pathogen. To successfully propagate an infection, this organism relies on the ability to change morphology, express virulence-associated genes and resist DNA damage caused by the host immune system. Many of these events involve chromatin alterations that are crucial for virulence. This review will focus on the studies that have been conducted on how chromatin function affects pathogenicity of C. albicans and other fungi. This article is part of a Special Issue entitled: Histone chaperones and Chromatin assembly.
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Affiliation(s)
- Jessica Lopes da Rosa
- Program in Gene Function and Expression, University of Massachusetts Medical School, Worcester, MA 01605-2324, USA
| | - Paul D. Kaufman
- Program in Gene Function and Expression, University of Massachusetts Medical School, Worcester, MA 01605-2324, USA
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35
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Graille M, Figaro S, Kervestin S, Buckingham RH, Liger D, Heurgué-Hamard V. Methylation of class I translation termination factors: structural and functional aspects. Biochimie 2012; 94:1533-43. [PMID: 22266024 DOI: 10.1016/j.biochi.2012.01.005] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2011] [Accepted: 01/07/2012] [Indexed: 12/23/2022]
Abstract
During protein synthesis, release of polypeptide from the ribosome occurs when an in frame termination codon is encountered. Contrary to sense codons, which are decoded by tRNAs, stop codons present in the A-site are recognized by proteins named class I release factors, leading to the release of newly synthesized proteins. Structures of these factors bound to termination ribosomal complexes have recently been obtained, and lead to a better understanding of stop codon recognition and its coordination with peptidyl-tRNA hydrolysis in bacteria. Release factors contain a universally conserved GGQ motif which interacts with the peptidyl-transferase centre to allow peptide release. The Gln side chain from this motif is methylated, a feature conserved from bacteria to man, suggesting an important biological role. However, methylation is catalysed by completely unrelated enzymes. The function of this motif and its post-translational modification will be discussed in the context of recent structural and functional studies.
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Affiliation(s)
- Marc Graille
- IBBMC, Université Paris-Sud 11, CNRS UMR8619, Orsay Cedex, F-91405, France.
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36
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Understanding histone acetyltransferase Rtt109 structure and function: how many chaperones does it take? Curr Opin Struct Biol 2011; 21:728-34. [PMID: 22023828 DOI: 10.1016/j.sbi.2011.09.005] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2011] [Revised: 09/09/2011] [Accepted: 09/27/2011] [Indexed: 11/21/2022]
Abstract
Rtt109 (Regulator of Ty1 Transposition 109) is a fungal-specific histone acetyltransferase required for modification of histone H3 K9, K27 and K56. These acetylations are associated with nascent histone H3 and play an integral role in replication-coupled and repair-coupled nucleosome assembly. Rtt109 is unique among acetyltransferases as it is activated by a histone chaperone; either Vps75 (Vacuolar Protein Sorting 75) or Asf1 (Anti-silencing Function 1). Recent biochemical, structural and genetic studies have shed light on the intricacies of this activation. It is now clear that Rtt109-Asf1 acetylates K56, while Rtt109-Vps75 acetylates K9 and K27. This reinforces that Asf1 and Vps75 activate Rtt109 via distinct molecular mechanisms. Structures of Rtt109-Vps75 further imply that Vps75 positions histone H3 in the Rtt109 active site. These structures however raise questions regarding the stoichiometry of the Rtt109-Vps75 complex. This has ramifications for determining the physiological Rtt109 substrate.
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37
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Parthun MR. Histone acetyltransferase 1: more than just an enzyme? BIOCHIMICA ET BIOPHYSICA ACTA-GENE REGULATORY MECHANISMS 2011; 1819:256-63. [PMID: 24459728 DOI: 10.1016/j.bbagrm.2011.07.006] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Received: 05/17/2011] [Revised: 06/29/2011] [Accepted: 07/04/2011] [Indexed: 10/18/2022]
Abstract
Histone acetyltransferase 1 (HAT1) is an enzyme that is likely to be responsible for the acetylation that occurs on lysines 5 and 12 of the NH2-terminal tail of newly synthesized histone H4. Initial studies suggested that, despite its evolutionary conservation, this modification of new histone H4 played only a minor role in chromatin assembly. However, a number of recent studies have brought into focus the important role of both this modification and HAT1 in histone dynamics. Surprisingly, the function of HAT1 in chromatin assembly may extend beyond just its catalytic activity to include its role as a major histone binding protein. These results are incorporated into a model for the function of HAT1 in histone deposition and chromatin assembly. This article is part of a Special issue entitled: Histone chaperones and Chromatin assembly.
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Affiliation(s)
- Mark R Parthun
- Department of Molecular and Cellular Biochemistry, The Ohio State University, Columbus, OH 43210, USA.
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38
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Bowman A, Ward R, Wiechens N, Singh V, El-Mkami H, Norman DG, Owen-Hughes T. The histone chaperones Nap1 and Vps75 bind histones H3 and H4 in a tetrameric conformation. Mol Cell 2011; 41:398-408. [PMID: 21329878 PMCID: PMC3093613 DOI: 10.1016/j.molcel.2011.01.025] [Citation(s) in RCA: 69] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2010] [Revised: 10/06/2010] [Accepted: 12/15/2010] [Indexed: 11/24/2022]
Abstract
Histone chaperones physically interact with histones to direct proper assembly and disassembly of nucleosomes regulating diverse nuclear processes such as DNA replication, promoter remodeling, transcription elongation, DNA damage, and histone variant exchange. Currently, the best-characterized chaperone-histone interaction is that between the ubiquitous chaperone Asf1 and a dimer of H3 and H4. Nucleosome assembly proteins (Nap proteins) represent a distinct class of histone chaperone. Using pulsed electron double resonance (PELDOR) measurements and protein crosslinking, we show that two members of this class, Nap1 and Vps75, bind histones in the tetrameric conformation also observed when they are sequestered within the nucleosome. Furthermore, H3 and H4 trapped in their tetrameric state can be used as substrates in nucleosome assembly and chaperone-mediated lysine acetylation. This alternate mode of histone interaction provides a potential means of maintaining the integrity of the histone tetramer during cycles of nucleosome reassembly.
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Affiliation(s)
- Andrew Bowman
- Wellcome Trust Centre for Gene Regulation and Expression, College of Life Sciences, University of Dundee, Dundee DD15EH, UK
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39
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Albaugh BN, Arnold KM, Lee S, Denu JM. Autoacetylation of the histone acetyltransferase Rtt109. J Biol Chem 2011; 286:24694-701. [PMID: 21606491 DOI: 10.1074/jbc.m111.251579] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
Rtt109 is a yeast histone acetyltransferase (HAT) that associates with histone chaperones Asf1 and Vps75 to acetylate H3K56, H3K9, and H3K27 and is important in DNA replication and maintaining genomic integrity. Recently, mass spectrometry and structural studies of Rtt109 have shown that active site residue Lys-290 is acetylated. However, the functional role of this modification and how the acetyl group is added to Lys-290 was unclear. Here, we examined the mechanism of Lys-290 acetylation and found that Rtt109 catalyzes intramolecular autoacetylation of Lys-290 ∼200-times slower than H3 acetylation. Deacetylated Rtt109 was prepared by reacting with a sirtuin protein deacetylase, producing an enzyme with negligible HAT activity. Autoacetylation of Rtt109 restored full HAT activity, indicating that autoacetylation is necessary for HAT activity and is a fully reversible process. To dissect the mechanism of activation, biochemical, and kinetic analyses were performed with Lys-290 variants of the Rtt109-Vps75 complex. We found that autoacetylation of Lys-290 increases the binding affinity for acetyl-CoA and enhances the rate of acetyl-transfer onto histone substrates. This study represents the first detailed investigation of a HAT enzyme regulated by single-site intramolecular autoacetylation.
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Affiliation(s)
- Brittany N Albaugh
- Department of Biomolecular Chemistry, University of Wisconsin-Madison, Madison, Wisconsin 53715, USA
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40
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Keck KM, Pemberton LF. Interaction with the histone chaperone Vps75 promotes nuclear localization and HAT activity of Rtt109 in vivo. Traffic 2011; 12:826-39. [PMID: 21463458 DOI: 10.1111/j.1600-0854.2011.01202.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Modification of histones is critical for the regulation of all chromatin-templated processes. Yeast Rtt109 is a histone acetyltransferase (HAT) that acetylates H3 lysines 9, 27 and 56. Rtt109 associates with and is stabilized by Nap1 family histone chaperone Vps75. Our data suggest Vps75 and Nap1 have some overlapping functions despite their different cellular localization and histone binding specificity. We determined that Vps75 contains a classical nuclear localization signal and is imported by Kap60-Kap95. Rtt109 nuclear localization depends on Vps75, and nuclear localization of the Vps75-Rtt109 complex is not critical for Rtt109-dependent functions, suggesting Rtt109 may be able to acetylate nascent histones before nuclear import. To date, the effects of VPS75 deletion on Rtt109 function had not been separated from the resulting Rtt109 degradation; thus, we used an Rtt109 mutant lacking the Vps75-interaction domain that is stable without Vps75. Our data show that in addition to promoting Rtt109 stability, Vps75 binding is necessary for Rtt109 acetylation of the H3 tail. Direct interaction of Vps75 with H3 likely allows Rtt109 access to the histone tail. Furthermore, our genetic interaction data support the idea of Rtt109-independent functions of Vps75. In summary, our data suggest that Vps75 influences chromatin structure by regulating histone modification and through its histone chaperone functions.
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Affiliation(s)
- Kristin M Keck
- Department of Microbiology, Center for Cell Signaling, University of Virginia Health Sciences Center, Charlottesville, VA 22908, USA
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41
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Avvakumov N, Nourani A, Côté J. Histone chaperones: modulators of chromatin marks. Mol Cell 2011; 41:502-14. [PMID: 21362547 DOI: 10.1016/j.molcel.2011.02.013] [Citation(s) in RCA: 154] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2010] [Revised: 01/26/2011] [Accepted: 02/09/2011] [Indexed: 10/18/2022]
Abstract
The many factors that control chromatin biology play key roles in essential nuclear functions like transcription, DNA damage response and repair, recombination, and replication and are critical for proper cell-cycle progression, stem cell renewal, differentiation, and development. These players belong to four broad classes: histone modifiers, chromatin remodelers, histone variants, and histone chaperones. A large number of studies have established the existence of an intricate functional crosstalk between the different factors, not only within a single class but also between different classes. In light of this, while many recent reviews have focused on structure and functions of histone chaperones, the current text highlights novel and striking links that have been established between these proteins and posttranslational modifications of histones and discusses the functional consequences of this crosstalk. These findings feed a current hot question of how cell memory may be maintained through epigenetic mechanisms involving histone chaperones.
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Affiliation(s)
- Nikita Avvakumov
- Laval University Cancer Research Center, Hôtel-Dieu de Québec (CHUQ), 9 McMahon Street, Quebec City, Quebec G1R 2J6, Canada
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42
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Su D, Hu Q, Zhou H, Thompson JR, Xu RM, Zhang Z, Mer G. Structure and histone binding properties of the Vps75-Rtt109 chaperone-lysine acetyltransferase complex. J Biol Chem 2011; 286:15625-9. [PMID: 21454705 DOI: 10.1074/jbc.c111.220715] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
The histone chaperone Vps75 presents the remarkable property of stimulating the Rtt109-dependent acetylation of several histone H3 lysine residues within (H3-H4)(2) tetramers. To investigate this activation mechanism, we determined x-ray structures of full-length Vps75 in complex with full-length Rtt109 in two crystal forms. Both structures show similar asymmetric assemblies of a Vps75 dimer bound to an Rtt109 monomer. In the Vps75-Rtt109 complexes, the catalytic site of Rtt109 is confined to an enclosed space that can accommodate the N-terminal tail of histone H3 in (H3-H4)(2). Investigation of Vps75-Rtt109-(H3-H4)(2) and Vps75-(H3-H4)(2) complexes by NMR spectroscopy-probed hydrogen/deuterium exchange suggests that Vps75 guides histone H3 in the catalytic enclosure. These findings clarify the basis for the enhanced acetylation of histone H3 tail residues by Vps75-Rtt109.
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Affiliation(s)
- Dan Su
- Department of Biochemistry and Molecular Biology, Mayo Clinic, Rochester, Minnesota 55905, USA
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