Term Name: methyltransferase cap2 activity
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

Relationships
is a type of: O-methyltransferase activity RNA methyltransferase activity