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Article

Evidence for involvement of proteins HU and RpoS in transcription of the osmoresponsive proU operon in Escherichia coli.

Journal of bacteriology - 1 Sept 1994

Manna D, Gowrishankar J

Abstract excerpt

Transcription of the proU operon of Escherichia coli is induced several hundred-fold upon growth at elevated osmolarity, but the underlying mechanisms are incompletely understood. Three cis elements appear to act additively to mediate proU osmoresponsivity: (i) sequences around a promoter, P1, which is situated 250 bp upstream of the first structural gene proV; (ii) sequences around another (sigma 70-dependent)...

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Identifiers

PMID: 8071215
DOI: 10.1128/jb.176.17.5378-5384.1994
PMCID: PMC196724

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PubMed metadata and Literature Corpus relationships. Corpus snapshot updated 7 Sept 2026. Manifest publication-graph-cohort-2026-09-08.1.

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Evidence for involvement of proteins HU and RpoS in transcription of the osmoresponsive proU operon in Escherichia coli.PMID 8071215Read ↗

Multiple mechanisms contribute to osmotic inducibility of proU operon expression in Escherichia coli: demonstration of two osmoresponsive promoters and of a negative regulatory element within the first structural gene.Semantic proximity Read ↗

In vivo expression from the RpoS-dependent P1 promoter of the osmotically regulated proU operon in Escherichia coli and Salmonella enterica serovar Typhimurium: activation by rho and hns mutations and by cold stress.Semantic proximity Read ↗

Effects of H-NS and potassium glutamate on sigmaS- and sigma70-directed transcription in vitro from osmotically regulated P1 and P2 promoters of proU in Escherichia coli.Semantic proximity Read ↗

Characterization of mutations affecting the osmoregulated proU promoter of Escherichia coli and identification of 5' sequences required for high-level expression.Semantic proximity Read ↗

The HU regulon is composed of genes responding to anaerobiosis, acid stress, high osmolarity and SOS induction.Semantic proximity Read ↗

ProQ is an RNA chaperone that controls ProP levels in Escherichia coli.Semantic proximity Read ↗

Role of DNA supercoiling and rpoS sigma factor in the osmotic and growth phase-dependent induction of the gene osmE of Escherichia coli K12.Semantic proximity Read ↗

Involvement of differential efficiency of transcription by esigmas and esigma70 RNA polymerase holoenzymes in growth phase regulation of the Escherichia coli osmE promoter.Semantic proximity Read ↗

Insight on the roles of stringent response, stringent-like response, and general stress response in hyperosmotic shock tolerance in Escherichia coli.Semantic proximity Read ↗

Osmotic signal transduction to proU is independent of DNA supercoiling in Escherichia coli.Semantic proximity Read ↗

Identification of conserved, RpoS-dependent stationary-phase genes of Escherichia coli.Semantic proximity Read ↗

Genome-Wide Transcriptional Response to Varying RpoS Levels in Escherichia coli K-12.Semantic proximity Read ↗

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