以下为句子列表：
英文: Chorismate mutase (CM ), prephenate dehydratase (PD ), and phenylalanine aminotransferase (PAT) are the three key enzymes in the fermentation of phenylalanine. In E. colt,the first two are encoded by a single gene pheA,while the third by tyrB gene.
中文: 为探讨用基因工程的手段改良苯丙氨酸的发酵菌株，采用聚合酶链反应（PCR）的方法，从大肠杆菌总DNA中克隆得到了编码苯丙氨酸合成途中的两个关键酶基因－－即分枝酸变位酶（CM）／预苯酸脱水酶（PD）基因pheA与苯丙氨酸转氨酶（PAT）基因tyrB，在大肠杆菌中进行了这两个基因的单个和串联表达。
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英文: dehydroquinate dehydratase was a(α2/β2)3 peptide,of which a pair of anti-parallel β-strands existed in the N-terminus and a loop in the C-terminus;
中文: 脱氢奎尼酸酶结构域为(α2β2)3多肽,在N-端有一对反平行的β链,在C-端有loop环;
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英文: STUDY ON DOMESTICATION OF A NITRILE HYDRATASE PRODUCING STRAIN AND OPTIMIZATION ON ITS NITRILE HYDRATASE PRODUCING CONDITIONS
中文: 产腈水合酶菌株的驯化及其产酶条件优化研究
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英文: Study on Optimization of Fermentation Conditions for Nitrile Hydratase Production by Rhodococcus sp.and Its Enzymological Character
中文: 腈水合酶产生菌发酵条件的优化及其酶学性质研究
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英文: Screening and Identification of a Nitrile Hydratase Producing Bacterium Strain and Research of Enzymatic Properties
中文: 腈水合酶产生菌的分离、鉴定及部分酶学性质研究
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