T4 DNA ligase

T4 DNA ligase is the product of gene 30 of phage T4. T4 DNA ligase catalyzes the repair of single-stranded nicks in duplex DNA and joins duplex DNA restriction fragments having either blunt or cohesive ends. T4 DNA ligase catalyze the sealing of adjacent 5′-phosphate and 3′-­hydroxyl termini at single-stranded breaks in double-stranded DNA.T4 DNA ligase is an ATP-dependent ligase enzyme. T4 DNA ligase can be used in various biotechnological applications. T4 DNA ligase can join the ends of single-stranded DNA in the absence of any duplex DNA structure at the ligation site[1][2][3].