"mRNA 5'-phosphatase"
"mrna 5'-phosphatase"
a 5'-end triphospho-ribonucleoside in mRNA + H2O = a 5'-end diphospho-ribonucleoside in mRNA + phosphate + H(+)
a 5'-end triphospho-ribonucleoside in mrna + h2o = a 5'-end diphospho-ribonucleoside in mrna + phosphate + h(+)