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

被引:261
作者
Peters, MW [1 ]
Meinhold, P [1 ]
Glieder, A [1 ]
Arnold, FH [1 ]
机构
[1] CALTECH, Div Chem & Chem Engn, Pasadena, CA 91125 USA
关键词
D O I
10.1021/ja0303790
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
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.
引用
收藏
页码:13442 / 13450
页数:9
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