6oie
The double PHD finger (DPF) of MORF in complex with histone H3K14cr
Structural highlights
DiseaseKAT6B_HUMAN Genitopatellar syndrome;Noonan syndrome;Blepharophimosis-intellectual disability syndrome, SBBYS type. A chromosomal aberration involving KAT6B may be a cause acute myeloid leukemias. Translocation t(10;16)(q22;p13) with CREBBP.[1] The disease is caused by mutations affecting the gene represented in this entry. The disease is caused by mutations affecting the gene represented in this entry. FunctionKAT6B_HUMAN Histone acetyltransferase which may be involved in both positive and negative regulation of transcription. Required for RUNX2-dependent transcriptional activation. May be involved in cerebral cortex development. Component of the MOZ/MORF complex which has a histone H3 acetyltransferase activity.[2] [3] [4] Publication Abstract from PubMedAcetylation of histone H3K23 has emerged as an essential posttranslational modification associated with cancer and learning and memory impairment, yet our understanding of this epigenetic mark remains insufficient. Here, we identify the native MORF complex as a histone H3K23-specific acetyltransferase and elucidate its mechanism of action. The acetyltransferase function of the catalytic MORF subunit is positively regulated by the DPF domain of MORF (MORFDPF). The crystal structure of MORFDPF in complex with crotonylated H3K14 peptide provides mechanistic insight into selectivity of this epigenetic reader and its ability to recognize both histone and DNA. ChIP data reveal the role of MORFDPF in MORF-dependent H3K23 acetylation of target genes. Mass spectrometry, biochemical and genomic analyses show co-existence of the H3K23ac and H3K14ac modifications in vitro and co-occupancy of the MORF complex, H3K23ac, and H3K14ac at specific loci in vivo. Our findings suggest a model in which interaction of MORFDPF with acylated H3K14 promotes acetylation of H3K23 by the native MORF complex to activate transcription. Histone H3K23-specific acetylation by MORF is coupled to H3K14 acylation.,Klein BJ, Jang SM, Lachance C, Mi W, Lyu J, Sakuraba S, Krajewski K, Wang WW, Sidoli S, Liu J, Zhang Y, Wang X, Warfield BM, Kueh AJ, Voss AK, Thomas T, Garcia BA, Liu WR, Strahl BD, Kono H, Li W, Shi X, Cote J, Kutateladze TG Nat Commun. 2019 Oct 17;10(1):4724. doi: 10.1038/s41467-019-12551-5. PMID:31624313[5] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
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