PRMT1: Arginine methyltransferase that methylates (mono and asymmetric dimethylation) the guanidino nitrogens of arginyl residues present in proteins such as ESR1, histone H2, H3 and H4, PIAS1, HNRNPA1, HNRNPD, NFATC2IP, SUPT5H, TAF15 and EWS. Constitutes the main enzyme that mediates monomethylation and asymmetric dimethylation of histone H4 'Arg-4' (H4R3me1 and H4R3me2a, respectively), a specific tag for epigenetic transcriptional activation. Together with dimethylated PIAS1, represses STAT1 transcriptional activity, in the late phase of interferon gamma (IFN-gamma) signaling. May be involved in the regulation of TAF15 transcriptional activity, act as an activator of estrogen receptor (ER)-mediated transactivation, play a key role in neurite outgrowth and act as a negative regulator of megakaryocytic differentiation, by modulating p38 MAPK pathway. Homodimer and heterodimer with PRMT8. The dimer can then associate to form a homohexamer. Interacts with ILF3, BTG1, BTG2, SUPT5H and interferon-alpha/beta receptor 1. Interacts with NFATC2IP. Widely expressed. By BTG1, BTG2 and ILF3. Belongs to the protein arginine N-methyltransferase family. 3 isoforms of the human protein are produced by alternative splicing.
Protein type: EC 2.1.1.125; Methyltransferase; Methyltransferase, protein arginine; Nuclear receptor co-regulator
Cellular Component: protein complex; cytoplasm; nucleus; cytosol
Molecular Function: identical protein binding; methyltransferase activity; trimethylamine methyltransferase activity; monomethylamine methyltransferase activity; RNA methyltransferase activity; tRNA (cytosine)-methyltransferase activity; rRNA (cytosine-C5-967)-methyltransferase activity; rRNA (uridine) methyltransferase activity; snoRNP binding; N-methyltransferase activity; tRNA (guanine) methyltransferase activity; rRNA (adenine-N6,N6-)-dimethyltransferase activity; selenocysteine methyltransferase activity; arginine N-methyltransferase activity; protein-arginine N-methyltransferase activity; methanol-specific methylcobalamin:coenzyme M methyltransferase activity; tRNA (guanine-N2-)-methyltransferase activity; dimethylamine methyltransferase activity; [cytochrome c]-arginine N-methyltransferase activity; protein methyltransferase activity; 2-polyprenyl-6-methoxy-1,4-benzoquinone methyltransferase activity; hydroxyneurosporene-O-methyltransferase activity; transferase activity; rRNA (uridine-2'-O-)-methyltransferase activity; tRNA (uracil) methyltransferase activity; rRNA (adenine) methyltransferase activity; C-methyltransferase activity; cobalt-precorrin-6B C5-methyltransferase activity; cobalt-precorrin-3 C17-methyltransferase activity; 1-phenanthrol methyltransferase activity; S-methyltransferase activity; lysine N-methyltransferase activity; DNA-methyltransferase activity; protein-arginine omega-N monomethyltransferase activity; tRNA (cytosine-5-)-methyltransferase activity; tRNA (adenine)-methyltransferase activity; C-terminal protein carboxyl methyltransferase activity; rRNA (cytosine) methyltransferase activity; cobalt-precorrin-7 C15-methyltransferase activity; protein-arginine N5-methyltransferase activity; rRNA methyltransferase activity; protein-arginine omega-N asymmetric methyltransferase activity; histone methyltransferase activity; protein-leucine O-methyltransferase activity; histone-arginine N-methyltransferase activity; demethylmenaquinone methyltransferase activity; rRNA (adenine-N6-)-methyltransferase activity; tRNA methyltransferase activity; rRNA (guanine) methyltransferase activity; methylarsonite methyltransferase activity; mRNA methyltransferase activity; protein binding; methylamine-specific methylcobalamin:coenzyme M methyltransferase activity; tRNA (guanine-N1-)-methyltransferase activity; cobalt-precorrin-5B C1-methyltransferase activity; protein-lysine N-methyltransferase activity; O-methyltransferase activity; tRNA (adenine-N1-)-methyltransferase activity; tRNA (adenine-57, 58-N(1)-) methyltransferase activity
Biological Process: histone methylation; methylation; peptidyl-arginine methylation; regulation of transcription, DNA-dependent; protein amino acid methylation; in utero embryonic development; peptidyl-arginine omega-N-methylation; peptidyl-arginine methylation, to asymmetrical-dimethyl arginine; peptidyl-arginine N-methylation; neurite development; negative regulation of megakaryocyte differentiation
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