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Article

The Na+-translocating NADH : ubiquinone oxidoreductase of Azotobacter vinelandii negatively regulates alginate synthesis.

Microbiology (Reading, England) - 1 Jan 2009

Núñez Cinthia, Bogachev Alexander V, Guzmán Gabriel, Tello Isaac, Guzmán Josefina, Espín Guadalupe

Abstract excerpt

Azotobacter vinelandii is a nitrogen-fixing soil bacterium that produces the exopolysaccharide alginate. In this report we describe the isolation and characterization of A. vinelandii strain GG4, which carries an nqrE : : Tn5 mutation resulting in alginate overproduction. The nqrE gene encodes a subunit of the Na+-translocating NADH : ubiquinone oxidoreductase (Na+-NQR). As expected, Na+-NQR activity was...

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PMID: 19118365
DOI: 10.1099/mic.0.022533-0

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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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The Na+-translocating NADH : ubiquinone oxidoreductase of Azotobacter vinelandii negatively regulates alginate synthesis.PMID 19118365Read ↗

Azotobacter vinelandii lacking the Na(+)-NQR activity: a potential source for producing alginates with improved properties and at high yield.Semantic proximity Read ↗

Characterization of the gene coding for GDP-mannose dehydrogenase (algD) from Azotobacter vinelandii.Semantic proximity Read ↗

The Azotobacter vinelandii response regulator AlgR is essential for cyst formation.Semantic proximity Read ↗

A novel bleb-dependent polysaccharide export system in nitrogen-fixing Azotobacter vinelandii subjected to low nitrogen gas levels.Semantic proximity Read ↗

Characterization of the genes coding for the putative sigma factor AlgU and its regulators MucA, MucB, MucC, and MucD in Azotobacter vinelandii and evaluation of their roles in alginate biosynthesis.Semantic proximity Read ↗

Alginate production by Azotobacter vinelandii mutants altered in poly-beta-hydroxybutyrate and alginate biosynthesis.Semantic proximity Read ↗

Characterization of three new Azotobacter vinelandii alginate lyases, one of which is involved in cyst germination.Semantic proximity Read ↗

The Azotobacter vinelandii alg8 and alg44 genes are essential for alginate synthesis and can be transcribed from an algD-independent promoter.Semantic proximity Read ↗

Transcriptional organization of the Azotobacter vinelandii algGXLVIFA genes: characterization of algF mutants.Semantic proximity Read ↗

Transcriptional Study of the RsmZ-sRNAs and Their Relationship to the Biosynthesis of Alginate and Alkylresorcinols in Azotobacter vinelandii.Semantic proximity Read ↗

Isolation and characterization of an Azotobacter vinelandii algK mutant.Semantic proximity Read ↗

Study of the sRNA RsmY involved in the genetic regulation of the synthesis of alginate and alkyl resorcinols in Azotobacter vinelandii.Semantic proximity Read ↗

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