Loading publication...

Noodle always counts identifier-free feature events for service operation. With your permission, Google Analytics can also estimate audience and engagement. Search text, publication identifiers, cookies, IP addresses and browser fingerprints are never included in Noodle's first-party event counters.

Privacy details

Article

Isolation and characterization of mutants affected in the expression of the nar operon Escherichia coli.

Acta cientifica venezolana - 1 Jan 1990

Orozco de Silva A, Toro S

Abstract excerpt

In the nitrate reductase system of Escherichia coli, the maximal expression of the nar operon is obtained under anaerobiosis in the presence of nitrate. Mudl (Ap,lac) insertion mutants, which only grew on lactose anaerobically if supplemented with nitrate were mapped at the chlC locus at min 27 of the map. In these fusion strains which lack benzyl viologen dependent nitrate reductase (NR) activity as well as the...

Topics

Chromosome Mapping
Chromosomes, Bacterial
Culture Media
Escherichia coli
Gene Expression Regulation, Bacterial
Lac Operon
Mutation
Nitrate Reductases
Operon

Source

Methodology Data sources Editorial policy Privacy About Contact Helena Bioinformatics

Identifiers

PMID: 2135555

Provenance

PubMed metadata and Literature Corpus relationships. Corpus snapshot updated 29 Aug 2026. Prepared record publication-2135555-2026-08-29.1. Manifest publication-graph-cohort-2026-08-29.1.

Source receipt: PubMed via Helena Literature Corpus, retrieved 29 Aug 2026.

Community interpretation

Discuss the evidence

Ask a question, add context or challenge an interpretation. Community activity is separate from scientific evidence strength.

0

discussions

0

replies

Citations encouraged

Claims remain attributable.

No discussion yet

Be the first to add a careful, cited interpretation.

Related research

Semantic proximity does not establish scientific evidence.

Research trail→

Click a neighbor to travelStep 1 · 12 closest

Isolation and characterization of mutants affected in the expression of the nar operon Escherichia coli.PMID 2135555Read ↗

Nitrate reductases in Escherichia coli.Semantic proximity Read ↗

Role of the periplasmic domain of the Escherichia coli NarX sensor-transmitter protein in nitrate-dependent signal transduction and gene regulation.Semantic proximity Read ↗

Identification and characterization of narQ, a second nitrate sensor for nitrate-dependent gene regulation in Escherichia coli.Semantic proximity Read ↗

Nitrate regulation of anaerobic respiratory gene expression in narX deletion mutants of Escherichia coli K-12.Semantic proximity Read ↗

The roles of the polytopic membrane proteins NarK, NarU and NirC in Escherichia coli K-12: two nitrate and three nitrite transporters.Semantic proximity Read ↗

Mutational analysis of nitrate regulatory gene narL in Escherichia coli K-12.Semantic proximity Read ↗

Hierarchical control of anaerobic gene expression in Escherichia coli K-12: the nitrate-responsive NarX-NarL regulatory system represses synthesis of the fumarate-responsive DcuS-DcuR regulatory system.Semantic proximity Read ↗

A dominant mutation in the gene for the Nag repressor of Escherichia coli that renders the nag regulon uninducible.Semantic proximity Read ↗

The narJ gene product is required for biogenesis of respiratory nitrate reductase in Escherichia coli.Semantic proximity Read ↗

Characterization of an oxygen-dependent inducible promoter, the nar promoter of Escherichia coli, to utilize in metabolic engineering.Semantic proximity Read ↗

Functional roles for the GerE-family carboxyl-terminal domains of nitrate response regulators NarL and NarP of Escherichia coli K-12.Semantic proximity Read ↗

Genetic evidence that NarL function is not required for nitrate regulation of nitrate assimilation in Klebsiella pneumoniae M5al.Semantic proximity Read ↗

⌁Select a neighboring publication to make it the new centre.