Protein: Coordinator of PRMT5 and differentiation stimulator (Cooperator of PRMT5) (Protein TTP1) (Q9NQ92)
Organism: Homo sapiens (Human)
Function: Histone-binding protein required for histone H4 methyltransferase activity of PRMT5. 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. Specifically interacts with the N-terminus of histone H4 but not with histone H3, suggesting that it acts by promoting the association between histone H4 and PRMT5. Involved in CCNE1 promoter repression. Plays a role in muscle cell differentiation by modulating the recruitment of PRMT5 to the promoter of genes involved in the coordination between cell cycle exit and muscle differentiation (By similarity).
Subcellular location: Nucleus {ECO:0000269|PubMed:18404153}.
Sequence: MDLQAAGAQAQGAAEPSRGPPLPSARGAPPSPEAGFATADHSSQERETEKAMDRLARGTQSIPNDSPARGEGTHSEEEGFAMDEEDSDGELNTWELSEGTNCPPKEQPGDLFNEDWDSELKADQGNPYDADDIQESISQELKPWVCCAPQGDMIYDPSWHHPPPLIPYYSKMVFETGQFDDAED
InterPro domains: - IPR029289: Coordinator of PRMT5 and differentiation stimulator (family) [2-184]
Interaction partners: - Protein arginine N-methyltransferase 5
- Methylosome protein WDR77
- Serine/threonine-protein kinase RIO1
- Histone H4
- U3 small nucleolar RNA-associated protein 6 homolog
- Methylosome subunit pICln
Gene Ontology annotations:
Molecular Function (MF): GO:0003674 (molecular function), GO:0005488 (binding), GO:0005515 (protein binding)
Biological Process (BP): GO:0008150 (biological process), GO:0008152 (metabolic process), GO:0009987 (cellular process), GO:0044237 (cellular metabolic process), GO:0006807 (nitrogen compound metabolic process), GO:0071704 (organic substance metabolic process), GO:0009056 (catabolic process), GO:0044238 (primary metabolic process), GO:1901564 (organonitrogen compound metabolic process), GO:0044248 (cellular catabolic process), GO:0019538 (protein metabolic process), GO:1901575 (organic substance catabolic process), GO:0044260 (cellular macromolecule metabolic process), GO:0043170 (macromolecule metabolic process), GO:0036211 (protein modification process), GO:0009057 (macromolecule catabolic process), GO:0043412 (macromolecule modification), GO:1901565 (organonitrogen compound catabolic process), GO:0006508 (proteolysis), GO:0044265 (cellular macromolecule catabolic process), GO:0030163 (protein catabolic process), GO:0070647 (protein modification by small protein conjugation or removal), GO:0043632 (modification-dependent macromolecule catabolic process), GO:0010498 (proteasomal protein catabolic process), GO:0051603 (proteolysis involved in protein catabolic process), GO:0032446 (protein modification by small protein conjugation), GO:0019941 (modification-dependent protein catabolic process), GO:0043161 (proteasome-mediated ubiquitin-dependent protein catabolic process), GO:0016567 (protein ubiquitination), GO:0006511 (ubiquitin-dependent protein catabolic process)
Cellular Component (CC): GO:0005575 (cellular component), GO:0110165 (cellular anatomical entity), GO:0005622 (intracellular anatomical structure), GO:0043226 (organelle), GO:0031974 (membrane-enclosed lumen), GO:0005654 (nucleoplasm), GO:0043229 (intracellular organelle), GO:0043233 (organelle lumen), GO:0043227 (membrane-bounded organelle), GO:0043231 (intracellular membrane-bounded organelle), GO:0070013 (intracellular organelle lumen), GO:0031981 (nuclear lumen), GO:0005634 (nucleus)