Cloning and expression of a Clostridium acetobutylicum alcohol dehydrogenase gene in Escherichia coli
An alcohol dehydrogenase (ADH) gene from Clostridium acetobutylicum was cloned on a recombinant plasmid, pCADH100. Escherichia coli HB101, and an allyl alcohol-resistant mutant, HB101-adh1, containing this plasmid were unable to grow aerobically or anaerobically on agar media containing sublethal concentrations of allyl alcohol. E. coli HB101 and HB101-adh1 transformed with the plasmid pCADH100 produced increased levels of ethanol when grown anaerobically under alkaline conditions in the absence of nitrate. Cell extracts from aerobically and anaerobically grown E. coli HB101(pCADH100) and HB101-adhl(pCADH100) cells exhibited increased levels of NADP-dependent ADH activity with either ethanol or butanol as the substrate. The inability of E. coli HB101(pCADH100) to grow in the presence of allyl alcohol correlated with the appearance of an NADP-dependent ADH activity band on nondenaturing polyacrylamide gel electrophoresis with either ethanol or butanol as the substrate.
- Research Organization:
- Univ. of Cape Town, Rondebosch (South Africa)
- OSTI ID:
- 7039441
- Journal Information:
- Appl. Environ. Microbiol.; (United States), Journal Name: Appl. Environ. Microbiol.; (United States) Vol. 54:3; ISSN AEMID
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
090222* -- Alcohol Fuels-- Preparation from Wastes or Biomass-- (1976-1989)
ALCOHOLS
BACTERIA
BIOSYNTHESIS
CLONING
CLOSTRIDIUM
CLOSTRIDIUM ACETOBUTYLICUM
DNA
DNA-CLONING
ENZYMES
ESCHERICHIA COLI
ETHANOL
GENETIC ENGINEERING
HYDROXY COMPOUNDS
METHANOGENIC BACTERIA
MICROORGANISMS
NUCLEIC ACIDS
ORGANIC COMPOUNDS
OXIDOREDUCTASES
RECOMBINANT DNA
SYNTHESIS