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Literature DB >> 2679388

Production of 4-methylumbelliferyl heptanoate hydrolase by Escherichia coli exposed to seawater.

L Fiksdal¹, M Pommepuy, A Derrien, M Cormier.

Abstract

The production of an enzyme, 4-methylumbelliferyl heptanoate hydrolase, in Escherichia coli exposed to enriched and nonenriched seawater was studied. In all media, except for seawater with no or very small amounts of organic material and seawater enriched with peptone, 4-methylumbelliferyl heptanoate hydrolase activity increased by 2 to 3 orders of magnitude within 2 days. Increased enzyme activity was assumed to be related to cells not undergoing lysis but adapting to conditions of nutrient limitation.

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Year: 1989 PMID： 2679388 PMCID： PMC203094 DOI： 10.1128/aem.55.9.2424-2427.1989

Source DB: PubMed Journal: Appl Environ Microbiol ISSN： 0099-2240 Impact factor: 4.792

18 in total

1. A tentative direct microscopic method for counting living marine bacteria.

Authors: K Kogure; U Simidu; N Taga
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2. Use of nuclepore filters for counting bacteria by fluorescence microscopy.

Authors: J E Hobbie; R J Daley; S Jasper
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Authors: J H Godsey; M R Matteo; D Shen; G Tolman; J R Gohlke
Journal: J Clin Microbiol Date: 1981-03 Impact factor: 5.948

4. Fluorogenic assays for immediate confirmation of Escherichia coli.

Authors: P C Feng; P A Hartman
Journal: Appl Environ Microbiol Date: 1982-06 Impact factor: 4.792

5. Evaluation of a fluorogenic assay for detection of Escherichia coli in foods.

Authors: B J Robison
Journal: Appl Environ Microbiol Date: 1984-08 Impact factor: 4.792

6. Choline-glycine betaine pathway confers a high level of osmotic tolerance in Escherichia coli.

Authors: B Landfald; A R Strøm
Journal: J Bacteriol Date: 1986-03 Impact factor: 3.490

7. Methylumbelliferyl-beta-D-glucuronide-based medium for rapid isolation and identification of Escherichia coli.

Authors: R W Trepeta; S C Edberg
Journal: J Clin Microbiol Date: 1984-02 Impact factor: 5.948

8. lac fusion analysis of the bet genes of Escherichia coli: regulation by osmolarity, temperature, oxygen, choline, and glycine betaine.

Authors: M W Eshoo
Journal: J Bacteriol Date: 1988-11 Impact factor: 3.490

Production of 4-methylumbelliferyl heptanoate hydrolase by Escherichia coli exposed to seawater.

1. A tentative direct microscopic method for counting living marine bacteria.

2. Use of nuclepore filters for counting bacteria by fluorescence microscopy.

3. Rapid identification of Enterobacteriaceae with microbial enzyme activity profiles.

4. Fluorogenic assays for immediate confirmation of Escherichia coli.

5. Evaluation of a fluorogenic assay for detection of Escherichia coli in foods.

6. Choline-glycine betaine pathway confers a high level of osmotic tolerance in Escherichia coli.

7. Methylumbelliferyl-beta-D-glucuronide-based medium for rapid isolation and identification of Escherichia coli.

8. lac fusion analysis of the bet genes of Escherichia coli: regulation by osmolarity, temperature, oxygen, choline, and glycine betaine.

9. Glycine betaine transport in Escherichia coli: osmotic modulation.

10. Glycine betaine, an osmotic effector in Klebsiella pneumoniae and other members of the Enterobacteriaceae.

1. Survival of Bacillus licheniformis in Seawater Model Ecosystems.

2. Monitoring of fecal pollution in coastal waters by use of rapid enzymatic techniques.