Structural highlights 
| 4ucu is a 1 chain structure. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. 
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| Ligands: | , | 
| Related: | 4uco, 4ucr, 4ucs, 4uct, 4ucv | 
| Activity: | DNA ligase (NAD(+)), with EC number 6.5.1.2 | 
| Resources: | FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT | 
  Function 
[DNLJ_HAEIN] DNA ligase that catalyzes the formation of phosphodiester linkages between 5'-phosphoryl and 3'-hydroxyl groups in double-stranded DNA using NAD as a coenzyme and as the energy source for the reaction. It is essential for DNA replication and repair of damaged DNA (By similarity).