LigA

• Description: DNA ligase (NAD-dependent)
  
  

Gene name	ligA
Synonyms	lig, yerG
Essential	yes PubMed
Product	DNA ligase (NAD-dependent)
Function	replication
MW, pI	74 kDa, 4.708
Gene length, protein length	2004 bp, 668 aa
Immediate neighbours	pcrA, yerH
Get the DNA and protein sequences (Barbe et al., 2009)
Genetic context This image was kindly provided by SubtiList

The gene

Basic information

• Locus tag: BSU06620

Phenotypes of a mutant

essential PubMed

Database entries

• DBTBS entry: [1]

• SubtiList entry: [2]

The protein

Basic information/ Evolution

• Catalyzed reaction/ biological activity: NAD⁺ + (deoxyribonucleotide)(n) + (deoxyribonucleotide)(m) = AMP + nicotinamide nucleotide + (deoxyribonucleotide)(n+m) (according to Swiss-Prot)

• Protein family: BRCT domain (according to Swiss-Prot)

• Paralogous protein(s):

Extended information on the protein

• Kinetic information:

• Domains:

• Modification:

• Cofactor(s):

• Effectors of protein activity:

• Interactions:

• Localization:

Database entries

• Structure: 1B04 (adenylation domain, Geobacillus stearothermophilus)

• UniProt: O31498

• KEGG entry: [3]

• E.C. number: 6.5.1.2

Expression and regulation

• Operon: pcrB-pcrA-ligA-yerH PubMed

• Sigma factor:

• Regulation:
  • induced by DNA damage (LexA) PubMed

• Regulatory mechanism:
  • LexA: transcription repression PubMed

• Additional information:

Biological materials

• Mutant:

• Expression vector:

• lacZ fusion:

• GFP fusion:

• two-hybrid system:

• Antibody:

References

Nora Au, Elke Kuester-Schoeck, Veena Mandava, Laura E Bothwell, Susan P Canny, Karen Chachu, Sierra A Colavito, Shakierah N Fuller, Eli S Groban, Laura A Hensley, Theresa C O'Brien, Amish Shah, Jessica T Tierney, Louise L Tomm, Thomas M O'Gara, Alexi I Goranov, Alan D Grossman, Charles M Lovett
Genetic composition of the Bacillus subtilis SOS system.
J Bacteriol: 2005, 187(22);7655-66
[PubMed:16267290] [WorldCat.org] [DOI] (P p)

M A Petit, S D Ehrlich
The NAD-dependent ligase encoded by yerG is an essential gene of Bacillus subtilis.
Nucleic Acids Res: 2000, 28(23);4642-8
[PubMed:11095673] [WorldCat.org] [DOI] (I p)

M A Petit, E Dervyn, M Rose, K D Entian, S McGovern, S D Ehrlich, C Bruand
PcrA is an essential DNA helicase of Bacillus subtilis fulfilling functions both in repair and rolling-circle replication.
Mol Microbiol: 1998, 29(1);261-73
[PubMed:9701819] [WorldCat.org] [DOI] (P p)