label: a ribonucleoside 3'-phosphate + a 5'-end dephospho-ribonucleoside-RNA + H(+) => a 5'-end 5'-dephospho-ribonucleotidyl-ribonucleotide-RNA + H2O
label_lc: a ribonucleoside 3'-phosphate + a 5'-end dephospho-ribonucleoside-rna + h(+) => a 5'-end 5'-dephospho-ribonucleotidyl-ribonucleotide-rna + h2o