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Article

H-NS and RpoS regulate emergence of Lac Ara+ mutants of Escherichia coli MCS2.

Journal of bacteriology - 1 Jul 1997

Gómez-Gómez J M, Blázquez J, Baquero F, Martínez J L

Abstract excerpt

Two master growth-phase regulatory proteins, H-NS and sigmaS, are involved in the formation of araB-lacZ fusion clones of Escherichia coli MCS2. The stationary-phase sigma factor RpoS is strictly required for the appearance of such mutants, whereas the histone-like protein H-NS represses their emergence. Our results support the idea that genetic changes leading to adaptive mutation in this model system are...

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Identifiers

PMID: 9226274
DOI: 10.1128/jb.179.14.4620-4622.1997
PMCID: PMC179300

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

Source receipt: pubmed, retrieved 7 Sept 2026.

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Research trail→

Click a neighbor to travelStep 1 · 12 closest

H-NS and RpoS regulate emergence of Lac Ara+ mutants of Escherichia coli MCS2.PMID 9226274Read ↗

Overexpression of the third H-NS paralogue H-NS2 compensates fitness loss in hns mutants of the enteroaggregative Escherichia coli strain 042.Semantic proximity Read ↗

Role for the histone-like protein H-NS in growth phase-dependent and osmotic regulation of sigma S and many sigma S-dependent genes in Escherichia coli.Semantic proximity Read ↗

H-NS over-expression induces an artificial stationary phase by silencing global transcription.Semantic proximity Read ↗

rpoS function is essential for bgl silencing caused by C-terminally truncated H-NS in Escherichia coli.Semantic proximity Read ↗

The Escherichia coli SOS gene sbmC is regulated by H-NS and RpoS during the SOS induction and stationary growth phase.Semantic proximity Read ↗

Role of activator site position and a distal UP-element half-site for sigma factor selectivity at a CRP/H-NS-activated sigma(s)-dependent promoter in Escherichia coli.Semantic proximity Read ↗

Differential spectrum of mutations that activate the Escherichia coli bgl operon in an rpoS genetic background.Semantic proximity Read ↗

Stationary phase induction of dnaN and recF, two genes of Escherichia coli involved in DNA replication and repair.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 ↗

Quantitative control of the stationary phase-specific sigma factor, sigma S, in Escherichia coli: involvement of the nucleoid protein H-NS.Semantic proximity Read ↗

hns, rpoS and lrp mutations affect stationary-phase survival at high osmolarity.Semantic proximity Read ↗

The Escherichia coli DNA-binding protein H-NS is one of the first proteins to be synthesized after a nutritional upshift.Semantic proximity Read ↗

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