5vnb
YEATS in complex with histone H3
Structural highlights
FunctionYETS4_HUMAN Component of the NuA4 histone acetyltransferase (HAT) complex which is involved in transcriptional activation of select genes principally by acetylation of nucleosomal histones H4 and H2A. This modification may both alter nucleosome - DNA interactions and promote interaction of the modified histones with other proteins which positively regulate transcription. This complex may be required for the activation of transcriptional programs associated with oncogene and proto-oncogene mediated growth induction, tumor suppressor mediated growth arrest and replicative senescence, apoptosis, and DNA repair. NuA4 may also play a direct role in DNA repair when recruited to sites of DNA damage.[1] Publication Abstract from PubMedGAS41 is a chromatin-associated protein that belongs to the YEATS family and is involved in the recognition of acetyl-lysine in histone proteins. A unique feature of GAS41 is the presence of a C-terminal coiled-coil domain, which is responsible for protein dimerization. Here, we characterized the specificity of the GAS41 YEATS domain and found that it preferentially binds to acetylated H3K18 and H3K27 peptides. Interestingly, we found that full-length, dimeric GAS41 binds to diacetylated H3 peptides with an enhanced affinity when compared to those for monoacetylated peptides, through a bivalent binding mode. We determined the crystal structure of the GAS41 YEATS domain with H3K23acK27ac to visualize the molecular basis of diacetylated histone binding. Our results suggest a unique binding mode in which full-length GAS41 is a reader of diacetylated histones. GAS41 Recognizes Diacetylated Histone H3 through a Bivalent Binding Mode.,Cho HJ, Li H, Linhares BM, Kim E, Ndoj J, Miao H, Grembecka J, Cierpicki T ACS Chem Biol. 2018 Aug 17. doi: 10.1021/acschembio.8b00674. PMID:30071723[2] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References
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