a 5'-end (N(7)-methyl 5'-triphosphoguanosine)-guanosine-phospho-ribonucleoside in mRNA + H2O = (N(7)-methyl 5'-triphospho-guanosine)-guanosine + a 5'-end phospho-ribonucleoside in mRNA + H(+)
a 5'-end (n(7)-methyl 5'-triphosphoguanosine)-guanosine-phospho-ribonucleoside in mrna + h2o = (n(7)-methyl 5'-triphospho-guanosine)-guanosine + a 5'-end phospho-ribonucleoside in mrna + h(+)