6v2r
From Proteopedia
Crystal Structure of chromodomain of CBX7 mutant V13A in complex with inhibitor UNC3866
Structural highlights
FunctionCBX7_HUMAN Component of a Polycomb group (PcG) multiprotein PRC1-like complex, a complex class required to maintain the transcriptionally repressive state of many genes, including Hox genes, throughout development. PcG PRC1 complex acts via chromatin remodeling and modification of histones; it mediates monoubiquitination of histone H2A 'Lys-119', rendering chromatin heritably changed in its expressibility. Promotes histone H3 trimethylation at 'Lys-9' (H3K9me3). Binds to trimethylated lysine residues in histones, and possibly also other proteins. Regulator of cellular lifespan by maintaining the repression of CDKN2A, but not by inducing telomerase activity.[1] [2] [3] [4] Publication Abstract from PubMedThe CDY (chromodomain on the Y) proteins play an essential role in normal spermatogenesis and brain development. Dysregulation of their expression has been linked to male infertility and various neurological diseases. Like the chromodomains of HP1 and Polycomb, the CDY chromodomains also recognize the lysine-methylated ARKS motif embedded in histone and non-histone proteins. Interestingly, the CDY chromodomains exhibit different binding preferences for the lysine-methylated ARKS motif in different sequence contexts. Here, we present the structural basis for selective binding of CDY1 to H3K9me3 and preferential binding of CDYL2 to H3tK27me3 over H3K27me3. In addition, we use a CDYL1/2-selective compound, UNC4850, to gain further insight into the molecular mechanisms underlying CDYL2 binding specificity. Our work also provides critical implications that CDYL1b's role in the regulation of neural development is dependent on its recognition of the lysine-methylated ARKS motif. Structural Basis for the Binding Selectivity of Human CDY Chromodomains.,Dong C, Liu Y, Lyu TJ, Beldar S, Lamb KN, Tempel W, Li Y, Li Z, James LI, Qin S, Wang Y, Min J Cell Chem Biol. 2020 May 26. pii: S2451-9456(20)30153-7. doi:, 10.1016/j.chembiol.2020.05.007. PMID:32470319[5] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References
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Categories: Homo sapiens | Large Structures | Synthetic construct | Arrowsmith CH | Bountra C | Dickson BM | Edwards AM | Frye SV | James LI | Liu Y | Min J | Stuckey JI | Tempel W | Walker JR
