ligD
168
DNA repair polymerase/ ligase in non-homologous end joining DNA repair
Locus
BSU_13400
Molecular weight
70.03 kDa
Isoelectric point
6.65
Function
non-homologous end joining DNA repair, repair of gapped DNA substrates
Product
DNA repair polymerase/ ligase
Essential
no
Synonyms
ligD, ykoU
Outlinks
Genomic Context
Categories containing this gene/protein
List of homologs in different organisms, belongs to COG3285 (Galperin et al., 2021)
This gene is a member of the following regulons
Gene
Coordinates
1,404,518 1,406,353
Phenotypes of a mutant
The protein
Catalyzed reaction/ biological activity
has inherent polymerization and ligase activities that allow it to fill the short gaps that can arise after realignment of the broken ends and to seal the resulting nicks, contributing to genome stability during the stationary phase and germination
has an intrinsic 5'-2-deoxyribose-5-phosphate (dRP) lyase activity located at the N-terminal ligase domain PubMed
ATP + (deoxyribonucleotide)(n)-3'-hydroxyl + 5'-phospho-(deoxyribonucleotide)(m) --> (deoxyribonucleotide)(n+m) + AMP + diphosphate (according to UniProt)
Protein family
N-terminal part: LigD polymerase family (single member, according to UniProt)
C-terminal part: ATP-dependent DNA ligase family (with LigB, according to UniProt)
N-terminal DNA ligase catalytic domain (aa 1 - 331) linked to a C-terminal polymerase domain (aa 332 - 611) PubMed
Structure
6NHX (PDB) (N-terminal ligase domain, from Mycobacterium tuberculosis, 26.3% identity) PubMed
5OP0 (PDB) (C-terminal polymerase domain, from Mycobacterium smegmatis, 30% identity) PubMed
Expression and Regulation
Operons
Biological materials
Mutant
MGNA-A778 (ykoU::erm), available at the NBRP B. subtilis, Japan
References
Reviews
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Original Publications
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Time of last update: 2025-04-08 16:36:38
Author of last update: Jstuelk