Structural highlights
Function
[VPS72_DROME] Part of the Tip60 chromatin-remodeling complex which is involved in DNA repair. Upon induction of DNA double-strand breaks, this complex acetylates phosphorylated H2AV in nucleosomes and exchanges it with unmodified H2AV.[1] [2] [H2AZ_HUMAN] Variant histone H2A which replaces conventional H2A in a subset of nucleosomes. Nucleosomes wrap and compact DNA into chromatin, limiting DNA accessibility to the cellular machineries which require DNA as a template. Histones thereby play a central role in transcription regulation, DNA repair, DNA replication and chromosomal stability. DNA accessibility is regulated via a complex set of post-translational modifications of histones, also called histone code, and nucleosome remodeling. May be involved in the formation of constitutive heterochromatin. May be required for chromosome segregation during cell division.[3]
References
- ↑ Kusch T, Florens L, Macdonald WH, Swanson SK, Glaser RL, Yates JR 3rd, Abmayr SM, Washburn MP, Workman JL. Acetylation by Tip60 is required for selective histone variant exchange at DNA lesions. Science. 2004 Dec 17;306(5704):2084-7. Epub 2004 Nov 4. PMID:15528408 doi:http://dx.doi.org/1103455
- ↑ Wu WH, Alami S, Luk E, Wu CH, Sen S, Mizuguchi G, Wei D, Wu C. Swc2 is a widely conserved H2AZ-binding module essential for ATP-dependent histone exchange. Nat Struct Mol Biol. 2005 Dec;12(12):1064-71. Epub 2005 Nov 20. PMID:16299513 doi:http://dx.doi.org/nsmb1023
- ↑ Farris SD, Rubio ED, Moon JJ, Gombert WM, Nelson BH, Krumm A. Transcription-induced chromatin remodeling at the c-myc gene involves the local exchange of histone H2A.Z. J Biol Chem. 2005 Jul 1;280(26):25298-303. Epub 2005 May 6. PMID:15878876 doi:http://dx.doi.org/10.1074/jbc.M501784200
