首页> 美国卫生研究院文献>Acta Crystallographica Section F: Structural Biology and Crystallization Communications >Expression purification crystallization and preliminary X-ray diffraction analysis of carbonyl reductase from Candida parapsilosis ATCC 7330
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Expression purification crystallization and preliminary X-ray diffraction analysis of carbonyl reductase from Candida parapsilosis ATCC 7330

机译:表达纯化结晶和来自Candida羰基还原酶的初步X射线衍射分析近平滑念珠菌aTCC 7330

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摘要

The NAD(P)H-dependent carbonyl reductase from Candida parapsilosis ATCC 7330 catalyses the asymmetric reduction of ethyl 4-phenyl-2-oxobutanoate to ethyl (R)-4-phenyl-2-hydroxybutanoate, a precursor of angiotensin-converting enzyme inhibitors such as Cilazapril and Benazepril. The carbonyl reductase was expressed in Escherichia coli and purified by GST-affinity and size-exclusion chromatography. Crystals were obtained by the hanging-drop vapour-diffusion method and diffracted to 1.86 Å resolution. The asymmetric unit contained two molecules of carbonyl reductase, with a solvent content of 48%. The structure was solved by molecular replacement using cinnamyl alcohol dehydrogenase from Saccharomyces cerevisiae as a search model.
机译:来自副念珠菌ATCC 7330的NAD(P)H依赖性羰基还原酶催化4-苯基-2-氧代丁酸乙酯不对称还原为(R)-4-苯基-2-羟基丁酸乙酯(血管紧张素转换酶抑制剂的前体)如西拉普利和贝那普利。羰基还原酶在大肠杆菌中表达,并通过GST亲和力和尺寸排阻色谱法纯化。通过悬滴蒸气扩散法获得晶体,并衍射至1.86分辨率。不对称单元包含两个分子的羰基还原酶,溶剂含量为48%。通过使用来自酿酒酵母的肉桂醇脱氢酶作为搜索模型,通过分子置换来解决结构。

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