Domain Annotation: ECOD Classification ECOD Database Homepage

ChainsFamily NameDomain Identifier ArchitecturePossible HomologyHomologyTopologyFamilyProvenance Source (Version)
ADNA_ligase_OBe5tt5A3 A: beta barrelsX: OB-foldH: Nucleic acid-binding proteins (From Topology)T: Nucleic acid-binding proteinsF: DNA_ligase_OBECOD (1.6)
AHHH_2e5tt5A2 A: alpha arraysX: HhH/H2THH: SAM/DNA-glycosylaseT: SAM domain-likeF: HHH_2ECOD (1.6)
ADNA_ligase_adene5tt5A1 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

ChainDomainClassArchitectureTopologyHomologyProvenance Source (Version)
A1.10.287.610 Mainly Alpha Orthogonal Bundle Helix Hairpins Helix hairpin binCATH (4.3.0)
A3.30.470.30 Alpha Beta 2-Layer Sandwich D-amino Acid Aminotransferase Chain A, domain 1CATH (4.3.0)
A1.10.150.20 Mainly Alpha Orthogonal Bundle DNA polymerase domain 1CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

ChainsAccessionNameDescriptionCommentsSource
PF00633Helix-hairpin-helix motif (HHH)Helix-hairpin-helix motif- Motif
PF03119NAD-dependent DNA ligase C4 zinc finger domain (DNA_ligase_ZBD)NAD-dependent DNA ligase C4 zinc finger domainDNA ligases catalyse the crucial step of joining the breaks in duplex DNA during DNA replication, repair and recombination, utilising either ATP or NAD(+) as a cofactor [1]. This family is a small zinc binding motif that is presumably DNA binding [1] ...DNA ligases catalyse the crucial step of joining the breaks in duplex DNA during DNA replication, repair and recombination, utilising either ATP or NAD(+) as a cofactor [1]. This family is a small zinc binding motif that is presumably DNA binding [1]. IT is found only in NAD dependent DNA ligases [1].
Domain
PF03120NAD-dependent DNA ligase OB-fold domain (DNA_ligase_OB)NAD-dependent DNA ligase OB-fold domainDNA ligases catalyse the crucial step of joining the breaks in duplex DNA during DNA replication, repair and recombination, utilising either ATP or NAD(+) as a cofactor [1]. This family is a small domain found after the adenylation domain Pfam:PF0165 ...DNA ligases catalyse the crucial step of joining the breaks in duplex DNA during DNA replication, repair and recombination, utilising either ATP or NAD(+) as a cofactor [1]. This family is a small domain found after the adenylation domain Pfam:PF01653 in NAD dependent ligases [1]. OB-fold domains generally are involved in nucleic acid binding.
Domain
PF14520Helix-hairpin-helix domain (HHH_5)Helix-hairpin-helix domain- Domain
PF01653NAD-dependent DNA ligase adenylation domain (DNA_ligase_aden)NAD-dependent DNA ligase adenylation domainDNA ligases catalyse the crucial step of joining the breaks in duplex DNA during DNA replication, repair and recombination, utilising either ATP or NAD(+) as a cofactor [1]. This domain is the catalytic adenylation domain. The NAD+ group is covalent ...DNA ligases catalyse the crucial step of joining the breaks in duplex DNA during DNA replication, repair and recombination, utilising either ATP or NAD(+) as a cofactor [1]. This domain is the catalytic adenylation domain. The NAD+ group is covalently attached to this domain at the lysine in the KXDG motif of this domain. This enzyme- adenylate intermediate is an important feature of the proposed catalytic mechanism [1].
Domain
PF22745DNA ligase-like, N-terminal NAD+-binding domain (Nlig-Ia)DNA ligase-like, N-terminal NAD+-binding domainThe alpha-helical Nlig-Ia domain is found at the N-terminal of DNA ligases and it has been proposed to either swivel the NAD+ close to the ligase active site lysine on the RAGNYA domain or function as an allosteric NAD+ binding site. The Nlig-Ia doma ...The alpha-helical Nlig-Ia domain is found at the N-terminal of DNA ligases and it has been proposed to either swivel the NAD+ close to the ligase active site lysine on the RAGNYA domain or function as an allosteric NAD+ binding site. The Nlig-Ia domain is also observed as a solo protein in phages that do not encode a separate NAD+-dependent ligase catalytic module, suggesting the domain can function independently of a DNA ligase. It has been proposed that these domains likely function as NAD+ sensors which might help indicate to the phage the development of NADase host effectors or shield NAD+ from the action of such effectors [1-3].
Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

ChainsPolymerMolecular FunctionBiological ProcessCellular Component
DNA ligase