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Beschreibung

"Histones are highly conserved proteins that serve as the structural scaffold for the organization of nuclear DNA into chromatin. Histone modifications regulate DNA transcription, repair, recombination, and replication. The most commonly studied modifications are acetylation, phosphorylation, methylation, and ubiquitination. These modifications can alter local chromatin architecture, or recruit trans-acting factors that recognize specific histone modifications (the ""histone code"" hypothesis). Histone H3 is acetylated on Lys14 by Gcn5, and histone H3 phosphorylation at Ser10 facilitates acetylation of Lys14 by Gcn5 in vitro. Moreover, Lys14 is involved in chromatin remodeling, and RSC4 (part of the RSC chromatin remodeling complex) contains essential tandem bromodomains that require H3 Lys14 acetylation for gene activation."