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. 1997 Nov;179(21):6862–6864. doi: 10.1128/jb.179.21.6862-6864.1997

SigmaE is an essential sigma factor in Escherichia coli.

A De Las Peñas 1, L Connolly 1, C A Gross 1
PMCID: PMC179621  PMID: 9352942

Abstract

SigmaE is an alternative sigma factor that controls the extracytoplasmic stress response in Escherichia coli. SigmaE is essential at high temperatures but was previously thought to be nonessential at temperatures below 37 degrees C. We present evidence that sigmaE is an essential sigma factor at all temperatures. Cells lacking sigmaE are able to grow at low temperatures because of the presence of a frequently arising, unlinked suppressor mutation.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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