Term Name:	5'-(N(7)-methyl 5'-triphosphoguanosine)-[mRNA] diphosphatase activity
Synonyms:	m(7)GpppN m(7)GMP phosphohydrolase activity, m(7)GpppX diphosphatase activity, m(7)GpppX pyrophosphatase activity
Definition:	Catalysis of the reaction: a 5'-end (N2,N2,N7-trimethyl 5'-triphosphoguanosine)-ribonucleoside in mRNA + H2O = a 5'-end diphospho-ribonucleoside in mRNA + 2 H+ + N7-methyl-GMP. Can also use (N7-methyl 5'-triphosphoguanosine)-ribonucleoside in mRNA as a substrate.
Ontology:	GO: Molecular Function [GO:0140932]    QuickGO    AmiGO