Reaction catalyzed by 5'-(N7-methylguanosine 5'-triphospho)-[mRNA] hydrolase (3.6.1.62), inosine diphosphate phosphatase (3.6.1.64), protein-synthesizing GTPase (3.6.5.3)

		+		H2O	=			+
	XDP	+		H2O	=		XMP	+		phosphate