دورية أكاديمية
أعرض في EDS

Maintenance of heterochromatin boundary and nucleosome composition at promoters by the Asf1 histone chaperone and SWR1-C chromatin remodeler in Saccharomyces cerevisiae.

التفاصيل البيبلوغرافية
العنوان: Maintenance of heterochromatin boundary and nucleosome composition at promoters by the Asf1 histone chaperone and SWR1-C chromatin remodeler in Saccharomyces cerevisiae.
المؤلفون: Lu PY; Centre for Molecular Medicine and Therapeutics, Child and Family Research Institute, University of British Columbia, Vancouver, BC, Canada V5Z 4H4., Kobor MS
المصدر: Genetics [Genetics] 2014 May; Vol. 197 (1), pp. 133-45. Date of Electronic Publication: 2014 Feb 27.
نوع المنشور: Journal Article; Research Support, Non-U.S. Gov't
اللغة: English
بيانات الدورية: Publisher: Oxford University Press Country of Publication: United States NLM ID: 0374636 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1943-2631 (Electronic) Linking ISSN: 00166731 NLM ISO Abbreviation: Genetics Subsets: MEDLINE
أسماء مطبوعة: Publication: 2021- : [Oxford] : Oxford University Press
Original Publication: Austin, Tex. [etc.]
مواضيع طبية MeSH: Chromatin Assembly and Disassembly*, Adenosine Triphosphatases/*metabolism , Cell Cycle Proteins/*metabolism , Heterochromatin/*genetics , Molecular Chaperones/*metabolism , Nucleosomes/*genetics , Promoter Regions, Genetic/*genetics , Saccharomyces cerevisiae/*genetics , Saccharomyces cerevisiae Proteins/*metabolism, Acetylation ; Gene Expression Regulation, Fungal ; Heterochromatin/metabolism ; Histones/metabolism ; Nucleosomes/metabolism ; Protein Subunits/metabolism ; Saccharomyces cerevisiae/cytology ; Saccharomyces cerevisiae/metabolism ; Silent Information Regulator Proteins, Saccharomyces cerevisiae/metabolism ; Telomere/genetics
مستخلص: 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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معلومات مُعتمدة: MOP-119383 Canada Canadian Institutes of Health Research
فهرسة مساهمة: Keywords: Asf1 histone chaperone; H2A.Z histone variant; heterochromatin spread; transcription
المشرفين على المادة: 0 (ASF1 protein, S cerevisiae)
0 (Cell Cycle Proteins)
0 (Heterochromatin)
0 (Histones)
0 (Htz1 protein, S cerevisiae)
0 (Molecular Chaperones)
0 (Nucleosomes)
0 (Protein Subunits)
0 (Saccharomyces cerevisiae Proteins)
0 (Silent Information Regulator Proteins, Saccharomyces cerevisiae)
EC 3.6.1.- (Adenosine Triphosphatases)
EC 3.6.1.3 (Swr1 protein, S cerevisiae)
تواريخ الأحداث: Date Created: 20140301 Date Completed: 20141222 Latest Revision: 20211021
رمز التحديث: 20221213
مُعرف محوري في PubMed: PMC4012474
DOI: 10.1534/genetics.114.162909
PMID: 24578349
قاعدة البيانات: MEDLINE
الوصف
تدمد:1943-2631
DOI:10.1534/genetics.114.162909