a 5'-end (N(2),N(2),N(7)-trimethyl 5'-triphosphoguanosine)-purine ribonucleoside in mRNA + H2O = a 5'-end phospho (purine-ribonucleoside) in mRNA + N(2),N(2),N(7)-trimethyl-GDP + 2 H(+)
a 5'-end (n(2),n(2),n(7)-trimethyl 5'-triphosphoguanosine)-purine ribonucleoside in mrna + h2o = a 5'-end phospho (purine-ribonucleoside) in mrna + n(2),n(2),n(7)-trimethyl-gdp + 2 h(+)
a 5'-end (N(2),N(2),N(7)-trimethyl 5'-triphosphoguanosine)-purine ribonucleoside in mRNA + H2O = a 5'-end phospho (purine-ribonucleoside) in mRNA + N(2),N(2),N(7)-trimethyl-GDP + 2 H(+)
a 5'-end (n(2),n(2),n(7)-trimethyl 5'-triphosphoguanosine)-purine ribonucleoside in mrna + h2o = a 5'-end phospho (purine-ribonucleoside) in mrna + n(2),n(2),n(7)-trimethyl-gdp + 2 h(+)