| Cloning and Expression of a Clostridium acetobutylicum Alcohol Dehydrogenase Gene in Escherichia coli. | |
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MedLine Citation:
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PMID: 16347579 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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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. The position of the cloned NADP-dependent ADH activity bands in E. coli HB101(pCADH100) cell extracts with either ethanol or butanol as the substrate coincided with the position of a single NADP-dependent ADH activity band in extracts of C. acetobutylicum cells. E. coli HB101(pCADH100) cell extracts prepared from both aerobically and anaerobically grown cells exhibited an additional protein band with an apparent M(r) of approximately 33,000 on sodium dodecyl sulfate-polyacryl-amide gel electrophoresis which was absent in cell extracts of E. coli HB101. A protein band with a similar apparent M(r) was observed in cell extracts of C. acetobutylicum, and in vitro transcription and translation experiments with pCADH100 produced a major protein product with a similar apparent M(r). |
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Authors:
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Jonathan S Youngleson; Joseph D Santangelo; David T Jones; David R Woods |
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Publication Detail:
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Type: JOURNAL ARTICLE |
Journal Detail:
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Title: Applied and environmental microbiology Volume: 54 ISSN: 1098-5336 ISO Abbreviation: Appl. Environ. Microbiol. Publication Date: 1988 Mar |
Date Detail:
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Created Date: 2005-12-13 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 7605801 Medline TA: Appl Environ Microbiol Country: - |
Other Details:
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Languages: ENG Pagination: 676-682 Citation Subset: - |
Affiliation:
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Department of Microbiology, University of Cape Town, Rondebosch 7700, South Africa. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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