RNA ligase (ATP)
In enzymology, an RNA ligase (ATP) (EC 6.5.1.3) is an enzyme that catalyzes the chemical reaction ATP + (ribonucleotide)n + (ribonucleotide)m ⇌ {\displaystyle \rightleftharpoons } AMP + diphosphate + (ribonucleotide)n+m. Their three substrates are ATP, (ribonucleotide)n and (ribonucleotide)m, and their three products are AMP, diphosphate and (ribonucleotide)n+m.