label: N(pros)-(5'-guanosyl-phosphono)-L-histidyl-[RNA ligase] + a 3'-end 3'-phospho-ribonucleotide-RNA + H(+) => a 3'-terminal ribonucleotide 3'-(5'-diphosphoguanosine)-RNA + L-histidyl-[RNA ligase]
label_lc: n(pros)-(5'-guanosyl-phosphono)-l-histidyl-[rna ligase] + a 3'-end 3'-phospho-ribonucleotide-rna + h(+) => a 3'-terminal ribonucleotide 3'-(5'-diphosphoguanosine)-rna + l-histidyl-[rna ligase]