SrfAD

• Description: surfactin synthetase / competence
  
  

Gene name	srfAD
Synonyms	comL
Essential	no
Product	surfactin synthetase / competence
Function	antibiotic synthesis
Gene expression levels in SubtiExpress: srfAD
MW, pI	27 kDa, 5.22
Gene length, protein length	726 bp, 242 aa
Immediate neighbours	srfAC, ycxA
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

miscellaneous metabolic pathways, biosynthesis of antibacterial compounds, most abundant proteins

This gene is a member of the following regulons

Abh regulon, CodY regulon, ComA regulon, PerR regulon, Spx regulon

The gene

Basic information

• Locus tag: BSU03520

Database entries

• BsubCyc: BSU03520

• DBTBS entry: [1]

• SubtiList entry: [2]

The protein

Basic information/ Evolution

• Catalyzed reaction/ biological activity:

• Protein family: thioesterase family (according to Swiss-Prot)

• Paralogous protein(s):

Extended information on the protein

• Kinetic information:

• Domains:

• Modification:

• Cofactors:

• Effectors of protein activity:

• Interactions:

• Localization: cytoplasm (according to Swiss-Prot)

Database entries

• BsubCyc: BSU03520

• Structure: 2RON, 2K2Q

• UniProt: Q08788

• KEGG entry: [3]

• E.C. number:

Expression and regulation

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

• Expression browser: 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
  • expressed at high cell density (ComA) PubMed

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

• Additional information:
  • belongs to the 100 most abundant proteins PubMed
  • number of protein molecules per cell (minimal medium with glucose and ammonium): 1861 PubMed
  • number of protein molecules per cell (complex medium with amino acids, without glucose): 503 PubMed

Biological materials

• Mutant:

• Expression vector:

• lacZ fusion:

• GFP fusion:

• two-hybrid system:

• Antibody:

References

Reviews

Massimiliano Marvasi, Pieter T Visscher, Lilliam Casillas Martinez
Exopolymeric substances (EPS) from Bacillus subtilis: polymers and genes encoding their synthesis.
FEMS Microbiol Lett: 2010, 313(1);1-9
[PubMed:20735481] [WorldCat.org] [DOI] (I p)