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The Coexpression of Glycerol Dehydratase Gene and 1,3-Propanediol Oxidoreductase Gene
Author(s): 
Pages: 12-14
Year: Issue:  3
Journal: FOOD AND FERMENTATION INDUSTRIES

Keyword:  甘油脱水酶基因(gldABC)13-丙二醇氧化还原酶基因(dhaT)共表达;
Abstract: 将dhaT基因片段以顺反子的形式插入到重组质粒pMD19TS2中gldABC基因的下游,形成重组克隆质粒pMD19TS3,进而将gldABC与dhaT基因以多顺反子的形式亚克隆至pET-28a(+)表达载体上.终浓度为1mmol/L IPTG诱导重组大肠杆菌E.coli/pET-28a(+)/gldABC-dhaT 2h,SDS-PAGE电泳分析结果表明分别在甘油脱水酶三个亚基分子量相对应的61ku、21ku、16ku和1,3-丙二醇氧化还原酶亚基分子量相对应的42 ku的位置上出现了特异性条带.上清液中酶活性分别为甘油脱水酶23.7U/mL,1,3-丙二醇氧化还原酶30.4 U/mL.
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