7by1

Structural highlights

Function

KAT2A_MOUSE Protein lysine acyltransferase that can act as a acetyltransferase, glutaryltransferase or succinyltransferase, depending on the context (PubMed:28424240). Acts as a histone lysine succinyltransferase: catalyzes succinylation of histone H3 on 'Lys-79' (H3K79succ), with a maximum frequency around the transcription start sites of genes (By similarity). Succinylation of histones gives a specific tag for epigenetic transcription activation (By similarity). Association with the 2-oxoglutarate dehydrogenase complex, which provides succinyl-CoA, is required for histone succinylation (By similarity). In different complexes, functions either as an acetyltransferase (HAT) or as a succinyltransferase: in the SAGA and ATAC complexes, acts as a histone acetyltransferase (By similarity). Has significant histone acetyltransferase activity with core histones, but not with nucleosome core particles (By similarity). Acetylation of histones gives a specific tag for epigenetic transcription activation (PubMed:28424240). Recruited by the XPC complex at promoters, where it specifically mediates acetylation of histone variant H2A.Z.1/H2A.Z, thereby promoting expression of target genes (By similarity). Involved in long-term memory consolidation and synaptic plasticity: acts by promoting expression of a hippocampal gene expression network linked to neuroactive receptor signaling (PubMed:25024434). Acts as a positive regulator of T-cell activation: upon TCR stimulation, recruited to the IL2 promoter following interaction with NFATC2 and catalyzes acetylation of histone H3 at 'Lys-9' (H3K9ac), leading to promote IL2 expression (PubMed:28424240). Required for growth and differentiation of craniofacial cartilage and bone by regulating acetylation of histone H3 at 'Lys-9' (H3K9ac) (PubMed:30424580). Regulates embryonic stem cell (ESC) pluripotency and differentiation (PubMed:30270482). Also acetylates non-histone proteins, such as CEBPB, PLK4 and TBX5 (PubMed:17301242). Involved in heart and limb development by mediating acetylation of TBX5, acetylation regulating nucleocytoplasmic shuttling of TBX5 (By similarity). Acts as a negative regulator of centrosome amplification by mediating acetylation of PLK4 (By similarity). Also acts as a histone glutaryltransferase: catalyzes glutarylation of histone H4 on 'Lys-91' (H4K91glu), a mark that destabilizes nucleosomes by promoting dissociation of the H2A-H2B dimers from nucleosomes (By similarity).[UniProtKB:Q92830]^{[1] [2] [3] [4] [5]}

See Also

• Histone acetyltransferase 3D structures

References

1. ↑ Wiper-Bergeron N, Salem HA, Tomlinson JJ, Wu D, Hache RJ. Glucocorticoid-stimulated preadipocyte differentiation is mediated through acetylation of C/EBPbeta by GCN5. Proc Natl Acad Sci U S A. 2007 Feb 20;104(8):2703-8. Epub 2007 Feb 14. PMID:17301242 doi:http://dx.doi.org/10.1073/pnas.0607378104
2. ↑ Stilling RM, Ronicke R, Benito E, Urbanke H, Capece V, Burkhardt S, Bahari-Javan S, Barth J, Sananbenesi F, Schutz AL, Dyczkowski J, Martinez-Hernandez A, Kerimoglu C, Dent SY, Bonn S, Reymann KG, Fischer A. K-Lysine acetyltransferase 2a regulates a hippocampal gene expression network linked to memory formation. EMBO J. 2014 Sep 1;33(17):1912-27. doi: 10.15252/embj.201487870. Epub 2014 Jul, 14. PMID:25024434 doi:http://dx.doi.org/10.15252/embj.201487870
3. ↑ Gao B, Kong Q, Zhang Y, Yun C, Dent SYR, Song J, Zhang DD, Wang Y, Li X, Fang D. The Histone Acetyltransferase Gcn5 Positively Regulates T Cell Activation. J Immunol. 2017 May 15;198(10):3927-3938. doi: 10.4049/jimmunol.1600312. Epub, 2017 Apr 19. PMID:28424240 doi:http://dx.doi.org/10.4049/jimmunol.1600312
4. ↑ Moris N, Edri S, Seyres D, Kulkarni R, Domingues AF, Balayo T, Frontini M, Pina C. Histone Acetyltransferase KAT2A Stabilizes Pluripotency with Control of Transcriptional Heterogeneity. Stem Cells. 2018 Dec;36(12):1828-1838. doi: 10.1002/stem.2919. Epub 2018 Oct 17. PMID:30270482 doi:http://dx.doi.org/10.1002/stem.2919
5. ↑ Sen R, Pezoa SA, Carpio Shull L, Hernandez-Lagunas L, Niswander LA, Artinger KB. Kat2a and Kat2b Acetyltransferase Activity Regulates Craniofacial Cartilage and Bone Differentiation in Zebrafish and Mice. J Dev Biol. 2018 Nov 12;6(4). pii: jdb6040027. doi: 10.3390/jdb6040027. PMID:30424580 doi:http://dx.doi.org/10.3390/jdb6040027