CapB

• Description: capsular polyglutamate biosynthesis
  
  

Gene name	capB
Synonyms	ywsC, pgsB
Essential	no
Product	poly-gamma-glutamate synthetase
Function	capsule synthesis
MW, pI	43 kDa, 5.073
Gene length, protein length	1179 bp, 393 aa
Immediate neighbours	capC, rbsR
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: BSU35900

Phenotypes of a mutant

no synthesis of the poly-gamma-glutamate capsule PubMed

Database entries

• DBTBS entry: [1]

• SubtiList entry: [2]

The protein

Basic information/ Evolution

• Catalyzed reaction/ biological activity: synthesis of poly-gamma-glutamate from L-Glu PubMed

• Protein family:

• Paralogous protein(s):

Extended information on the protein

• Kinetic information:

• Domains:

• Modification:

• Cofactor(s):

• Effectors of protein activity:

• Interactions:

• Localization:

Database entries

• Structure:

• UniProt: P96736

• KEGG entry: [3]

• E.C. number:

Expression and regulation

• Operon: capB-capC-capA-capE PubMed

• Sigma factor: SigA PubMed

• Regulation:

• Regulatory mechanism: DegU-P: transcription activation PubMed

• Additional information: The operon is not expressed in the lab strain 168 due to lack of expression of DegQ resulting in inactivity of DegS and DegU

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)