PRMT5: an ubiquitous enzyme with protein methyltransferase activity. Methylates specific arginine residues in the transcription elongation factor SPT5, and the small nuclear ribonucleoproteins SNRPD1 and SNRPD3. Plays a role in the assembly of snRNP core particles. May play a role in cytokine-activated transduction pathways. Negatively regulates cyclin E1 promoter activity and cellular proliferation. May regulate the SPT5 transcriptional elongation properties. May be part of a pathway that is connected to a chloride current, possibly through cytoskeletal rearrangement. Component of the methylosome, a 20S complex that includes ICLN, SKB1 and WDR77. Component of a high molecular weight E2F-pocket protein complex, CERC (cyclin E1 repressor complex). Also interacts with Sm proteins, JAK2, SSTR1 and SPT5. Associates with SWI/SNF remodeling complexes containing SMARCA2 and SMARCA4.
Protein type: EC 2.1.1.125; Methyltransferase, protein arginine; RNA processing; Methyltransferase; Cell cycle regulation
Chromosomal Location of Human Ortholog: 14q11.2
Cellular Component: nucleoplasm; cytoplasm; nucleus; cytosol
Molecular Function: methyltransferase activity; ribonucleoprotein binding; protein binding; protein-arginine omega-N symmetric methyltransferase activity; histone-arginine N-methyltransferase activity; chromatin binding; transcription corepressor activity
Biological Process: peptidyl-arginine methylation, to symmetrical-dimethyl arginine; spliceosomal snRNP biogenesis; establishment and/or maintenance of chromatin architecture; transcription, DNA-dependent; negative regulation of transcription from RNA polymerase II promoter; endothelial cell activation; cell proliferation; peptidyl-arginine methylation; regulation of transcription, DNA-dependent; regulation of mitosis; gene expression; circadian regulation of gene expression; peptidyl-arginine N-methylation
Show more