Temperature regulation of protease in Pseudomonas fluorescens LS107d2 by an ECF sigma factor and a transmembrane activator
Article Abstract:
Research has been conducted on Pseudomonas fluorescens production of extracellular enzymes. The authors report the isolation of transposon mutant of P. fluorescens LS107d2 which is protease deficient at 29 degrees C but produces protease at 23 degrees C.
Publication Name: Microbiology
Subject: Biological sciences
ISSN: 1350-0872
Year: 2000
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The aprX-lipA operon of Pseudomonas fluorescens B52: a molecular analysis of metalloprotease and lipase production
Article Abstract:
The aprX-lipA operon of Pseudomonas fluorescens B52 has been studied using molecular analysis of metalloprotease. The operon encodes lipase. Analysis of the regulation of the operon by temperature was carried out inasmuch as it has been proposed that lipase production is regulated in such a way as to bring on increased enzyme synthesis at low temperature, unlike the enzyme synthesis at higher temperatures, which is more familiar in pathogenesis. Lipase and protease production by psychrotrophic strains of P. fluorescens is of interest because of the enzyme activities in food spoilage at low temperatures.
Publication Name: Microbiology
Subject: Biological sciences
ISSN: 1350-0872
Year: 2001
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The Pseudomonas fluorescens transcription activator AdnA is required for adhesion and motility
Article Abstract:
The Pseudomonas fluorescens transcription activator AdnA has been found to be necessary for motility and adhesion. Both are in a gene showing homology to the NtrC/NifA family of transcription activators. The phenotypes seen are caused by lack of AdnA and are not the result of other mutation or polar effects of mutations in adnA on other genes. The insertions Pf0-5 and Pf0-10 have been localized. The disrupted genes are now known to be the same ORF. Recently found data indicate that in P. aeruginosa, the FliD protein, at the tips of flagella, mediates a specific interaction with mucins.
Publication Name: Microbiology
Subject: Biological sciences
ISSN: 1350-0872
Year: 2001
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