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首页> 外文期刊>Journal of bacteriology >Molecular cloning of an alcohol (butanol) dehydrogenase gene cluster from Clostridium acetobutylicum ATCC 824.
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Molecular cloning of an alcohol (butanol) dehydrogenase gene cluster from Clostridium acetobutylicum ATCC 824.

机译:丙酮丁醇梭菌ATCC 824中醇(丁醇)脱氢酶基因簇的分子克隆。

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In Clostridium acetobutylicum, conversion of butyraldehyde to butanol is enzymatically achieved by butanol dehydrogenase (BDH). A C. acetobutylicum gene that encodes this protein was identified by using an oligonucleotide designed on the basis of the N-terminal amino acid sequence of purified C. acetobutylicum NADH-dependent BDH. Enzyme assays of cell extracts of Escherichia coli harboring the clostridial gene demonstrated 15-fold-higher NADH-dependent BDH activity than untransformed E. coli, as well as an additional NADPH-dependent BDH activity. Kinetic, sequence, and isoelectric focusing analyses suggest that the cloned clostridial DNA contains two or more distinct C. acetobutylicum enzymes with BDH activity.
机译:在乙酰丁酸梭菌中,丁醛向丁醇的转化是通过丁醇脱氢酶(BDH)酶促实现的。通过使用基于纯化的丙酮丁醇梭菌NADH依赖性BDH的N-末端氨基酸序列设计的寡核苷酸,鉴定出编码该蛋白质的丙酮丁醇梭菌基因。带有梭菌基因的大肠杆菌细胞提取物的酶法分析显示,NADH依赖性BDH活性比未转化的大肠杆菌高15倍,另外还有NADPH依赖性BDH活性。动力学,序列和等电聚焦分析表明,克隆的梭菌DNA包含两个或多个具有BDH活性的丙酮丁醇梭菌酶。

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