Expression, purification, crystallization and preliminary X-ray diffraction analysis of carbonyl reductase from Candida parapsilosis ATCC 7330
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作者:
Aggarwal, Nidhi
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Indian Inst Technol, Dept Biotechnol, Madras 600036, Tamil Nadu, IndiaIndian Inst Technol, Dept Biotechnol, Madras 600036, Tamil Nadu, India
Aggarwal, Nidhi
[1
]
Mandal, P. K.
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Univ Madras, CAS Crystallog & Biophys, Madras 600025, Tamil Nadu, IndiaIndian Inst Technol, Dept Biotechnol, Madras 600036, Tamil Nadu, India
Mandal, P. K.
[2
]
Gautham, Namasivayam
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Univ Madras, CAS Crystallog & Biophys, Madras 600025, Tamil Nadu, IndiaIndian Inst Technol, Dept Biotechnol, Madras 600036, Tamil Nadu, India
Gautham, Namasivayam
[2
]
Chadha, Anju
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Indian Inst Technol, Dept Biotechnol, Madras 600036, Tamil Nadu, India
Indian Inst Technol, Natl Ctr Catalysis Res, Madras 600036, Tamil Nadu, IndiaIndian Inst Technol, Dept Biotechnol, Madras 600036, Tamil Nadu, India
Chadha, Anju
[1
,3
]
机构:
[1] Indian Inst Technol, Dept Biotechnol, Madras 600036, Tamil Nadu, India
[2] Univ Madras, CAS Crystallog & Biophys, Madras 600025, Tamil Nadu, India
[3] Indian Inst Technol, Natl Ctr Catalysis Res, Madras 600036, Tamil Nadu, India
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 angstrom 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.