DNA Ligases

**Definition:** Poly(deoxyribonucleotide):poly(deoxyribonucleotide)ligases. Enzymes that catalyze the joining of preformed deoxyribonucleotides in phosphodiester linkage during genetic processes during repair of a single-stranded break in duplex DNA. The class includes both EC 6.5.1.1 (ATP) and EC 6.5.1.2 (NAD).

**Tree numbers:** - D08.811.074.500 - D08.811.464.754.600

**Synonyms:** - DNA Ligase - DNA Joinases - Polydeoxyribonucleotide Ligases - Polydeoxyribonucleotide Synthetases