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J Am Chem Soc. 2003 Nov 5;125(44):13442-50.

Regio- and enantioselective alkane hydroxylation with engineered cytochromes P450 BM-3.

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1
Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, USA.

Abstract

Cytochrome P450 BM-3 from Bacillus megaterium was engineered using a combination of directed evolution and site-directed mutagenesis to hydroxylate linear alkanes regio- and enantioselectively using atmospheric dioxygen as an oxidant. BM-3 variant 9-10A-A328V hydroxylates octane at the 2-position to form S-2-octanol (40% ee). Another variant, 1-12G, also hydroxylates alkanes larger than hexane primarily at the 2-position but forms R-2-alcohols (40-55% ee). These biocatalysts are highly active (rates up to 400 min(-1)) and support thousands of product turnovers. The regio- and enantioselectivities are retained in whole-cell biotransformations with Escherichia coli, where the engineered P450s can be expressed at high levels and the cofactor is supplied endogenously.

PMID:
14583039
DOI:
10.1021/ja0303790
[Indexed for MEDLINE]
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