Abstract
The acetylation of the NH2-terminal tail of histone H4 by type B histone acetyltransferases (HATs) is involved in the process of chromatin assembly. Histone H4 associated with a nuclear type B HAT complex contains modifications in its globular core domain as well. In particular, acetylation was found at lysine 91. A mutation that alters this residue, which lies in the interface between histone H3/H4 tetramers and H2A/H2B dimers, confers phenotypes consistent with defects in chromatin assembly such as sensitivity to DNA damaging agents and derepression and alteration of silent chromatin structure. In addition, this mutation destabilizes the histone octamer, leading to defects in chromatin structure. These results indicate an important role for histone modifications outside the NH2-tail domains in the processes of chromatin assembly, DNA repair, and transcriptional silencing.
MeSH Terms
Acetylation
Cell Nucleus/metabolism
Chromatin/metabolism
Dimerization
Histones/chemistry,genetics,metabolism
Lysine/metabolism
Protein Isoforms/chemistry,genetics,metabolism
Saccharomyces cerevisiae/genetics,metabolism
Saccharomyces cerevisiae Proteins/chemistry,genetics,metabolism
Chemicals
Chromatin
Histones
Protein Isoforms
Saccharomyces cerevisiae Proteins
Lysine
Authors & Affiliations
8 authors, click to expand affiliations / ORCID
Ye Jianxin
Department of Molecular and Cellular Biochemistry, The Ohio State University, Columbus, Ohio 43210, USA.
Ai Xi
Eugeni Ericka E
Zhang Liwen
Carpenter Laura Rocco
Jelinek Mary A
Freitas Michael A
Parthun Mark R
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