PCIF1
Domain
The WW domain is sufficient for direct and specific interaction with the phosphorylated CTD of RNAPII largest subunit.
Function
Cap-specific adenosine methyltransferase that catalyzes formation of N(6),2'-O-dimethyladenosine cap (m6A(m)) by methylating the adenosine at the second transcribed position of capped mRNAs (PubMed:30467178, PubMed:30487554, PubMed:31279658, PubMed:31279659, PubMed:33428944). Recruited to the early elongation complex of RNA polymerase II (RNAPII) via interaction with POLR2A and mediates formation of m6A(m) co-transcriptionally (PubMed:30467178).
Sequence Similarities
Belongs to the CAPAM family.
Tissue Specificity
Ubiquitous.
Cellular localization
- Nucleus
Alternative names
C20orf67, CAPAM, PPP1R121, PCIF1, mRNA (2'-O-methyladenosine-N(6)-)-methyltransferase, Cap-specific adenosine methyltransferase, Phosphorylated CTD-interacting factor 1, Protein phosphatase 1 regulatory subunit 121, hCAPAM, hPCIF1