Cited by 22Genomics and Chromatin DynamicsNuclear Structure and FunctionFungal and yeast genetics research

Direct Interplay among Histones, Histone Chaperones, and a Chromatin Boundary Protein in the Control of Histone Gene Expression

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Zunder, Rachel M., Rine, Jasper·2012·Molecular and Cellular Biology

Abstract

In Saccharomyces cerevisiae, the histone chaperone Rtt106 binds newly synthesized histone proteins and mediates their delivery into chromatin during transcription, replication, and silencing. Rtt106 is also recruited to histone gene regulatory regions by the HIR histone chaperone complex to ensure S-phase-specific expression. Here we showed that this Rtt106:HIR complex included Asf1 and histone proteins. Mutations in Rtt106 that reduced histone binding reduced Rtt106 enrichment at histone genes, leading to their increased transcription. Deletion of the chromatin boundary element Yta7 led to increased Rtt106:H3 binding, increased Rtt106 enrichment at histone gene regulatory regions, and decreased histone gene transcription at the HTA1-HTB1 locus. These results suggested a unique regulatory mechanism in which Rtt106 sensed the level of histone proteins to maintain the proper level of histone gene transcription. The role of these histone chaperones and Yta7 differed markedly among the histone gene loci, including the two H3-H4 histone gene pairs. Defects in silencing in rtt106 mutants could be partially accounted for by Rtt106-mediated changes in histone gene repression. These studies suggested that feedback mediated by histone chaperone complexes plays a pivotal role in regulating histone gene transcription.

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Authors
Zunder, R. M., & Rine, J.
Affiliations
QB3 (US)
Venue
Molecular and Cellular Biology
Published
2012-11
Volume
32
Issue
21
Pages
4337-4349
ISSN
  • 0270-7306 (ISSN-L)
  • 1098-5549
OpenAlex
W2140585143
Cited by
22
References
61
Citations by year
2026: 1 · 2023: 2 · 2022: 1 · 2021: 3 · 2020: 1 · 2019: 2 · 2018: 1 · 2017: 2 · 2016: 1 · 2015: 1 · 2014: 5 · 2013: 2
FWCI
1.03
Type
journal article
Language
en
Open access
Locations
  • Molecular and Cellular Biology (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Science Foundation
  • National Institutes of Health (GM31105)
  • National Institute of General Medical Sciences (GM31105, R01GM031105, R37GM031105)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Genomics and Chromatin Dynamics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Nuclear Structure and Function
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Fungal and yeast genetics research
Keywords
histone gene transcription, histone chaperone, Asf1, chromatin boundaries, histone H3, histone H4, Saccharomyces cerevisiae
MeSH terms
Cell Cycle, Chromatin, Chromosomal Proteins, Non-Histone, Histones, Nuclear Proteins, Protein Binding, Repressor Proteins, Saccharomyces cerevisiae, Transcription, Genetic, Cell Cycle Proteins, Molecular Chaperones, Gene Silencing, Feedback, Physiological, Saccharomyces cerevisiae Proteins

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