7f5m
From Proteopedia
Crystal structure of Sas5 YEATS domain in complex with H3K27bz peptide
Structural highlights
FunctionSAS5_YEAST Component of the SAS complex, a multiprotein complex that acetylates 'Lys-16' of histone H4 and 'Lys-14' of histone H3. The SAS complex is however unable to acetylate nucleosomal histones. The complex is involved in transcriptional silencing at telomeres and at HML locus. Also involved in rDNA silencing. In the complex, SAS5 is required for maximal histone acetyltransferase (HAT) activity of the complex, suggesting that it may be required to stabilize the complex or help in substrate recognition.[1] [2] [3] Publication Abstract from PubMedLysine benzoylation (Kbz) is a recently discovered post-translational modification associated with active transcription. However, the proteins for maintaining and interpreting Kbz and the physiological roles of Kbz remain elusive. Here, we systematically characterize writer, eraser, and reader proteins of histone Kbz in S. cerevisiae using proteomic, biochemical, and structural approaches. Our study identifies 27 Kbz sites on yeast histones that can be regulated by cellular metabolic states. The Spt-Ada-Gcn5 acetyltransferase (SAGA) complex and NAD(+)-dependent histone deacetylase Hst2 could function as the writer and eraser of histone Kbz, respectively. Crystal structures of Hst2 complexes reveal the molecular basis for Kbz recognition and catalysis by Hst2. In addition, we demonstrate that a subset of YEATS domains and bromodomains serve as Kbz readers, and structural analyses reveal how YEATS and bromodomains recognize Kbz marks. Moreover, the proteome-wide screening of Kbz-modified proteins identifies 207 Kbz sites on 149 non-histone proteins enriched in ribosome biogenesis, glycolysis/gluconeogenesis, and rRNA processing pathways. Our studies identify regulatory elements for the Kbz pathway and provide a framework for dissecting the biological functions of lysine benzoylation. Global profiling of regulatory elements in the histone benzoylation pathway.,Wang D, Yan F, Wu P, Ge K, Li M, Li T, Gao Y, Peng C, Chen Y Nat Commun. 2022 Mar 16;13(1):1369. doi: 10.1038/s41467-022-29057-2. PMID:35296687[4] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References
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