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. 1997 Aug;179(16):5232–5237. doi: 10.1128/jb.179.16.5232-5237.1997

Autogenous control of PspF, a constitutively active enhancer-binding protein of Escherichia coli.

G Jovanovic 1, J Dworkin 1, P Model 1
PMCID: PMC179386  PMID: 9260970

Abstract

Escherichia coli sigma54-dependent phage shock protein operon (pspA to -E) transcription is under the control of PspF, a constitutively active activator. Sigma70-dependent transcription of pspF is under autogenous control by wild-type PspF but not by a DNA-binding mutant, PspF deltaHTH. Negative autoregulation of PspF is continual and not affected by stimuli, like f1 pIV, that induce the pspA to -E operon. PspF production is independent of PspA (the negative regulator of the pspA to -E operon) and of PspB and -C (positive regulators).

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Selected References

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