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  • Description: Carbon catabolite control protein A, involved in glucose regulation of many genes; represses catabolic genes and activates genes involved in excretion of excess carbon

Gene name ccpA
Synonyms graR, alsA, amyR
Essential no
Product transcriptional regulator
Function mediates carbon catabolite repression (CCR)
Metabolic function and regulation of this protein in SubtiPathways:
Nucleoside catabolism, Nucleotides (regulation), Ile, Leu, Val,
His, Coenzyme A, Central C-metabolism
MW, pI 36,8 kDa, 5.06
Gene length, protein length 1002 bp, 334 amino acids
Immediate neighbours aroA, motP
Get the DNA and protein sequences
(Barbe et al., 2009)
Genetic context
CcpA context.gif
This image was kindly provided by SubtiList








The gene

Basic information

  • Locus tag: BSU29740

Phenotypes of a mutant

Loss of carbon catabolite repression. Loss of PTS-dependent sugar transport due to excessive phosphorylation of HPr by HprK. The mutant is unable to grow on a minimal medium with glucose and ammonium as the only sources of carbon and nitrogen, respectively.

Database entries

  • DBTBS entry: [1]
  • SubtiList entry: [2]

Additional information

The protein

Basic information/ Evolution

  • Catalyzed reaction/ biological activity: transcriptional regulator of carbon catabolite repression (CCR)
  • Protein family: LacI family
  • Paralogous protein(s):

Genes controlled by CcpA

Extended information on the protein

  • Kinetic information:
  • Domains:
    • HTH lacI-type Domain (1 – 58)
    • DNA binding Domain (6 – 25)
  • Modification:
  • Cofactor(s): HPr-Ser46-P, Crh-Ser-46-P
  • Effectors of protein activity:glucose-6-phosphate, fructose-1,6-bisphosphate Pubmed
  • Localization:

Database entries

  • Structure: CcpA-Crh-DNA-complex NCBI, complex with P-Ser-HPr and sulphate ions NCBI
  • KEGG entry: [3]

Additional information

Expression and regulation

  • Sigma factor:
  • Regulation: constitutively expressed PubMed
  • Additional information: there are about 3.000 molecules of CcpA per cell PubMed

Biological materials

  • Mutant: QB5407 (spc), GP302 (erm), GP300 (an in frame deletion of ccpA), available in Stülke lab
  • Expression vector: pGP643 (N-terminal Strep-tag, purification from B. subtilis, for SPINE, in pGP380), available in Stülke lab
  • lacZ fusion:
  • GFP fusion:

Labs working on this gene/protein

Wolfgang Hillen, Erlangen University, Germany Homepage

Richard Brennan, Houston, Texas, USA Homepage

Milton H. Saier, University of California at San Diego, USA Homepage

Yasutaro Fujita, University of Fukuyama, Japan

Jörg Stülke, University of Göttingen, Germany Homepage

Oscar Kuipers, University of Groningen, The Netherlands Homepage

Your additional remarks

References

Reviews


General and physiological studies


Global analyses (proteome, transcriptome)


Repression of target genes by CcpA


Positive regulation of gene expression by CcpA


Control of CcpA activity


CcpA-DNA interaction


Functional analysis of CcpA


Structural analyses