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Revision as of 17:59, 17 June 2010

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

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

Standard Name

leuO

Gene Synonym(s)

ECK0078, b0076, JW0075[1]

Product Desc.

LeuO transcriptional activator[2][3]

Pleiotropic transcriptional regulator; regulates dsrA; relieves bgl silencing, multi-copy represses cadC[4]

Product Synonyms(s)

DNA-binding transcriptional activator[1], B0076[2][1], LeuO[2][1], affects expression of small regulatory Dsr-RNA[5], translational regulation of rpoS, relieves bgl silencing[2][1]

Function from GO

<GO_nr />

Knock-Out Phenotype
Regulation/Expression

transcription unit(s): leuO[2]

Regulation/Activity
Quick Links

DNA display    Protein display    Pubmed(leuO)    Textpresso(leuO)

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

Notes

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LysR-family. leuO is upstream and divergent of the leuABCD operon. LeuO is required for recovery of a relA1 strain from starvation for brached-chain amino acids. In Salmonella, LeuO relieves leuABCD silencing mediated by an AT-rich silencer sequence between leuO and leuA. In Salmonella, LeuO expression is activated by an ilvHI-leuO-leuA promoter relay mechanism mediated by DNA supercoiling, possibly explaining the ppGpp-dependent increase in E. coli LeuO expression in stationary phase as an indirect effect of ppGpp stimulating the expression of Lrp, an ilvHI activator.[4]



References

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  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. ↑ 4.0 4.1 EcoGene: Rudd, KE (2000) EcoGene: a genome sequence database for Escherichia coli K-12. Nucleic Acids Res 28:60-4.
  5. ↑ Klauck, E et al. (1997) The LysR-like regulator LeuO in Escherichia coli is involved in the translational regulation of rpoS by affecting the expression of the small regulatory DsrA-RNA. Mol. Microbiol. 25 559-69 PubMed