LigA

• Description: DNA ligase (NAD-dependent)
  
  

Gene name	ligA
Synonyms	lig, yerG
Essential	yes PubMed
Product	DNA ligase (NAD-dependent)
Function	replication
Gene expression levels in SubtiExpress: ligA
MW, pI	74 kDa, 4.708
Gene length, protein length	2004 bp, 668 aa
Immediate neighbours	pcrA, yerH
Sequences	Protein DNA DNA_with_flanks
Genetic context This image was kindly provided by SubtiList
Expression at a glance   PubMed

Categories containing this gene/protein

DNA replication, essential genes

This gene is a member of the following regulons

LexA regulon

The gene

Basic information

• Locus tag: BSU06620

Phenotypes of a mutant

essential PubMed

Database entries

• BsubCyc: BSU06620

• 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

• BsubCyc: BSU06620

• 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

• Expression browser: ligA 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)