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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<sup>+</sup> phenotype to ''E. coli''.
==References==
==References==
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Revision as of 18:02, 16 January 2009

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Quickview   Gene   Gene Product(s)   Expression   Evolution   On One Page    
References Suggestions
Gene Name

chbR (synonyms: ECK1733, b1735, JW1724, celD)[1]

Product(s)

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

Description

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

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.

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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

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  1. ↑ 1.0 1.1 Riley, M. et al. (2006) Nucleic Acids Res 34:1-6 (corrected supplemental data from B. Wanner)
  2. ↑ 2.0 2.1 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