SrfAB

• Description: surfactin synthetase / competence
  
  

Gene name	srfAB
Synonyms	comL
Essential	no
Product	surfactin synthetase / competence
Function	antibiotic synthesis
MW, pI	400 kDa, 4.903
Gene length, protein length	10761 bp, 3587 aa
Immediate neighbours	srfAA, comS
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: BSU03490

Database entries

• DBTBS entry: [1]

• SubtiList entry: [2]

The protein

Basic information/ Evolution

• Catalyzed reaction/ biological activity:

• Protein family: ATP-dependent AMP-binding enzyme family (according to Swiss-Prot)

• Paralogous protein(s):

Extended information on the protein

• Kinetic information:

• Domains:

• Modification: phosphorylation on Ser-999 AND Ser-2045 PubMed

• Cofactor(s):

• Effectors of protein activity:

• Interactions:

• Localization: membrane PubMed

Database entries

• Structure:

• UniProt: Q04747

• KEGG entry: [3]

• E.C. number:

Expression and regulation

• Operon: srfAA-srfAB-comS-srfAC-srfAD PubMed

• Sigma factor: SigA PubMed

• Regulation:
  • repressed during growth in the presence of branched chain amino acids (CodY) PubMed
  • repressed during hydrogen peroxide stress (PerR) PubMed

• Regulatory mechanism:
  • CodY: transcription repression PubMed
  • ComA: transcription activation PubMed
  • PerR: transcription activation PubMed
  • Spx: transcription repression PubMed

• Additional information:

Biological materials

• Mutant:

• Expression vector:

• lacZ fusion:

• GFP fusion:

• two-hybrid system:

• Antibody:

References

Hannes Hahne, Susanne Wolff, Michael Hecker, Dörte Becher
From complementarity to comprehensiveness--targeting the membrane proteome of growing Bacillus subtilis by divergent approaches.
Proteomics: 2008, 8(19);4123-36
[PubMed:18763711] [WorldCat.org] [DOI] (I p)

Mitsuo Ogura, Yasutaro Fujita
Bacillus subtilis rapD, a direct target of transcription repression by RghR, negatively regulates srfA expression.
FEMS Microbiol Lett: 2007, 268(1);73-80
[PubMed:17227471] [WorldCat.org] [DOI] (P p)

Boris Macek, Ivan Mijakovic, Jesper V Olsen, Florian Gnad, Chanchal Kumar, Peter R Jensen, Matthias Mann
The serine/threonine/tyrosine phosphoproteome of the model bacterium Bacillus subtilis.
Mol Cell Proteomics: 2007, 6(4);697-707
[PubMed:17218307] [WorldCat.org] [DOI] (P p)

Paul D Straight, Michael A Fischbach, Christopher T Walsh, David Z Rudner, Roberto Kolter
A singular enzymatic megacomplex from Bacillus subtilis.
Proc Natl Acad Sci U S A: 2007, 104(1);305-10
[PubMed:17190806] [WorldCat.org] [DOI] (P p)

Kentaro Hayashi, Taku Ohsawa, Kazuo Kobayashi, Naotake Ogasawara, Mitsuo Ogura
The H2O2 stress-responsive regulator PerR positively regulates srfA expression in Bacillus subtilis.
J Bacteriol: 2005, 187(19);6659-67
[PubMed:16166527] [WorldCat.org] [DOI] (P p)

Shunji Nakano, Michiko M Nakano, Ying Zhang, Montira Leelakriangsak, Peter Zuber
A regulatory protein that interferes with activator-stimulated transcription in bacteria.
Proc Natl Acad Sci U S A: 2003, 100(7);4233-8
[PubMed:12642660] [WorldCat.org] [DOI] (P p)

M S Turner, J D Helmann
Mutations in multidrug efflux homologs, sugar isomerases, and antimicrobial biosynthesis genes differentially elevate activity of the sigma(X) and sigma(W) factors in Bacillus subtilis.
J Bacteriol: 2000, 182(18);5202-10
[PubMed:10960106] [WorldCat.org] [DOI] (P p)

P Serror, A L Sonenshein
CodY is required for nutritional repression of Bacillus subtilis genetic competence.
J Bacteriol: 1996, 178(20);5910-5
[PubMed:8830686] [WorldCat.org] [DOI] (P p)

D Vollenbroich, N Mehta, P Zuber, J Vater, R M Kamp
Analysis of surfactin synthetase subunits in srfA mutants of Bacillus subtilis OKB105.
J Bacteriol: 1994, 176(2);395-400
[PubMed:8288534] [WorldCat.org] [DOI] (P p)

M M Nakano, L A Xia, P Zuber
Transcription initiation region of the srfA operon, which is controlled by the comP-comA signal transduction system in Bacillus subtilis.
J Bacteriol: 1991, 173(17);5487-93
[PubMed:1715856] [WorldCat.org] [DOI] (P p)