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chbR:Quickview

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See Help:Quickview for help with entering information in the Quickview table.

Standard Name

chbR

Gene Synonym(s)

ECK1733, b1735, JW1724, celD[1]

Product Desc.

ChbR transcriptional regulator[2]; ChbR transcriptional dual regulator[3]

Repressor, chb operon for N,N'-diacetylchitobiose utilization; AraC family [4]

Product Synonyms(s)

DNA-binding transcriptional dual regulator[1], B1735[2][1], ChbR[2][1], CelD[2][1]

Function from GO

Molecular Function

Knock-Out Phenotype

Chitobiose negative and Cellobiose negative

Regulation/Expression

transcription unit(s): chbBCARFG[2]

Regulation/Activity

Repressor in the absence of inducer and activator in the presence of inducer.

Quick Links

DNA display    Protein display    Pubmed(chbR)    Textpresso(chbR)

See Help:Quickview for help with entering information in the Quickview table.

Notes

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ChbR was initially reported as a repressor of the chb operon. However later work showed that this protein is an activator as well as the repressor of the chb operon. The mutations in the chbR have also been reported to confer Cel+ phenotype to E. coli.

References

[5] [6] [7]

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See Help:References for how to manage references in EcoliWiki.

  1. 1.0 1.1 1.2 1.3 1.4 Riley, M. et al. (2006) Nucleic Acids Res 34:1-6 (corrected supplemental data from B. Wanner)
  2. 2.0 2.1 2.2 2.3 2.4 EcoCyc (release 10.6; 2007) Keseler, IM et al. (2005) Nucleic Acids Res. 33(Database issue):D334-7
  3. EcoCyc (release 11.1; 2007) Keseler, IM et al. (2005) Nucleic Acids Res. 33(Database issue):D334-7
  4. EcoGene: Rudd, KE (2000) EcoGene: a genome sequence database for Escherichia coli K-12. Nucleic Acids Res 28:60-4.
  5. Kachroo AH et al. (2007) Mutations that alter the regulation of the chb operon of Escherichia coli allow utilization of cellobiose. Mol Microbiol 66: 1382-95 PubMed EcoliWiki page
  6. Plumbridge J & Pellegrini O (2004) Expression of the chitobiose operon of Escherichia coli is regulated by three transcription factors: NagC, ChbR and CAP. Mol Microbiol 52: 437-49 PubMed EcoliWiki page
  7. Keyhani NO & Roseman S (1997) Wild-type Escherichia coli grows on the chitin disaccharide, N,N'-diacetylchitobiose, by expressing the cel operon. Proc Natl Acad Sci U S A 94: 14367-71 PubMed EcoliWiki page
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