Which of the following is the cofactor for Prokaryotic DNA ligase?: (A) Tetrahydrobiopterin, (B) ATP, (C) NAD, (D) FAD
Answer is C. DNA ligase : Enzyme that catalyse the formation of phosphodiester bond. During replication, the nick is sealed by DNA ligases. Use : In recombinant DNA technology as molecular glues. Cofactors : In Prokaryotes - NAD In Eukaryotes - ATP