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References Suggestions


Standard Name


Gene Synonym(s)

ECK1920, b1921, JW1906, yedH[1], yedH

Product Desc.

possible cell-density responsive regulator of sigmaF[2]; predicted regulator of FliA activity[3]

RpoS antagonist, transiently in post-exponential phase; timing factor allowing motility to continue for a while during starvation; not required for normal motility[4]

Product Synonyms(s)

predicted regulator of FliA activity[1], B1921[2][1], YedH[2][1], FliZ[2][1] , ECK1920, JW1906, yedH, b1921

Function from GO

<GO_nr />

Knock-Out Phenotype

transcription unit(s): fliAZY[2], fliA

Quick Links

porteco.png EcoCyc.gif regulondb.jpg

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FliZ antagonizes Crl activation of a subset of RpoS-dependent promoters, without changing RpoS levels, and thus resembles an anti-sigma factor at Crl-stimulated RpoS promoters (Pesavento, 2008). FliZ may also regulate FliA (sigma 28).[4]


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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.