Term Name: | methyltransferase cap2 activity |
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Synonyms: | cap2-MTase activity, mRNA (nucleoside-2'-O-)-methyltransferase activity |
Definition: | Catalysis of the reaction: a 5'-end (N(7)-methyl 5'-triphosphoguanosine)-(2'-O-methyl-ribonucleoside)-(ribonucleotide) in mRNA or snRNA + S-adenosyl-L-methionine = a 5'-end (N(7)-methyl 5'-triphosphoguanosine)-(2'-O-methyl-ribonucleoside)-(2'-O-methyl-ribonucleotide) in mRNA or snRNA + S-adenosyl-L-homocysteine + H+. This activity catalyzes the methylation of the ribose on the second transcribed nucleotide of mRNAs and snRNAs. |
Ontology: | GO: Molecular Function [GO:0120550] QuickGO AmiGO |