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