Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

ChainsTypeFamily Name Domain Identifier Family IdentifierProvenance Source (Version)
ASCOP2 FamilyAdenylation domain of NAD+-dependent DNA ligase 8024210 4002085 SCOP2 (2022-06-29)
ASCOP2 FamilyNAD+-dependent DNA ligase, domain 3 8025337 4001027 SCOP2 (2022-06-29)
ASCOP2 FamilyDNA ligase/mRNA capping enzyme postcatalytic domain-like 8029581 4001931 SCOP2 (2022-06-29)
ASCOP2 SuperfamilyDNA ligase/mRNA capping enzyme, catalytic domain 8036589 3000798 SCOP2 (2022-06-29)
ASCOP2 SuperfamilyHelix-hairpin-helix tandem 8037716 3000163 SCOP2 (2022-06-29)
ASCOP2 SuperfamilyNucleic acid-binding proteins 8041960 3000135 SCOP2 (2022-06-29)
BSCOP2B SuperfamilyHelix-hairpin-helix tandem 8037716 3000163 SCOP2B (2022-06-29)
BSCOP2B SuperfamilyDNA ligase/mRNA capping enzyme, catalytic domain 8036589 3000798 SCOP2B (2022-06-29)
BSCOP2B SuperfamilyNucleic acid-binding proteins 8041960 3000135 SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

ChainsFamily NameDomain Identifier ArchitecturePossible HomologyHomologyTopologyFamilyProvenance Source (Version)
ADNA_ligase_OBe1dgsA1 A: beta barrelsX: OB-foldH: Nucleic acid-binding proteins (From Topology)T: Nucleic acid-binding proteinsF: DNA_ligase_OBECOD (1.6)
AHHH_2e1dgsA2 A: alpha arraysX: HhH/H2THH: SAM/DNA-glycosylaseT: SAM domain-likeF: HHH_2ECOD (1.6)
ADNA_ligase_adene1dgsA3 A: a+b complex topologyX: Protein kinase/SAICAR synthase/ATP-grasp (From Homology)H: Protein kinase/SAICAR synthase/ATP-graspT: ATP-graspF: DNA_ligase_adenECOD (1.6)
BDNA_ligase_OBe1dgsB1 A: beta barrelsX: OB-foldH: Nucleic acid-binding proteins (From Topology)T: Nucleic acid-binding proteinsF: DNA_ligase_OBECOD (1.6)
BHHH_2e1dgsB2 A: alpha arraysX: HhH/H2THH: SAM/DNA-glycosylaseT: SAM domain-likeF: HHH_2ECOD (1.6)
BDNA_ligase_adene1dgsB3 A: a+b complex topologyX: Protein kinase/SAICAR synthase/ATP-grasp (From Homology)H: Protein kinase/SAICAR synthase/ATP-graspT: ATP-graspF: DNA_ligase_adenECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Structure Motif Annotation: Mechanism and Catalytic Site Atlas M-CSA Database Homepage

ChainsEnzyme NameDescriptionCatalytic Residues
DNA ligase (NAD+)  M-CSA #450

DNA ligases catalyse the formation of phosphodiester bonds at single-strand breaks in double stranded DNA and are required in DNA replication, repair and recombination. DNA ligases are also used extensively for in vitro DNA manipulation and cloning techniques. Eukaryotic, viral and achaebacteria encoded enzyme al require ATP, where as NAD+ requiring DNA ligases are found exclusively in eubacteria.

Defined by 9 residues: GLU:A-114LYS:A-116ASP:A-118TYR:A-221LYS:A-312CYS:A-406CYS:A-409CYS:A-422CYS:A-427
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Explore in 3DM-CSA Motif Definition
Extent of motif is too large to support Structure Motif searching.
EC: 6.5.1.2 (PDB Primary Data)