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Cooperator of PRMT5 family COPR5 is a family of histone H4-binding proteins expressed in the nucleus. It interacts with the N-terminus of histone H4 thereby mediating the association between histone H4 and PRMT5, PRMT5, the Janus kinase-binding protein 1 that catalyzes the formation of symmetric dimethyl-arginine residues in proteins. COPR5 is specifically required for histone H4 'Arg-3' methylation mediated by PRMT5, but not histone H3 'Arg-8' methylation, suggesting that it modulates the substrate specificity of PRMT5. This family of proteins is found in eukaryotes.
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PubMed References
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