Term Name: | RNA cap trimethylguanosine synthase activity |
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Synonyms: | cap hypermethylase activity, RNA trimethylguanosine synthase activity, small nuclear RNA methyltransferase activity, snRNA methyltransferase activity |
Definition: | Catalysis of two successive methyl transfer reactions from AdoMet to the N-2 atom of guanosine, thereby converting 7-methylguanosine in an RNA cap to 2,2,7 trimethylguanosine. |
Ontology: | GO: Molecular Function [GO:0071164] QuickGO AmiGO |