Abstract:
:The gene encoding a novel short-chain alcohol dehydrogenase in the thermophilic bacterium, Carboxydothermus hydrogenoformans, was identified and overexpressed in Escherichia coli. The enzyme was thermally stable and displayed the highest activity at 70 °C and pH 6.0. It preferred NAD(H) over NADP(H) as a cofactor and exhibited broad substrate specificity towards aliphatic ketones, cycloalkanones, aromatic ketones, and ketoesters. Furthermore, ethyl benzoylformate was asymmetrically reduced by the purified enzyme, using an additional coupled NADH regeneration system, with 95 % conversion and in an enantiomeric excess of (99.9 %). The results of this study may lead to the discovery of a novel method for asymmetric reduction of alcohols, which is an important tool in organic synthesis.
journal_name
Biotechnol Lettjournal_title
Biotechnology lettersauthors
Zhou S,Zhang SC,Lai DY,Zhang SL,Chen ZMdoi
10.1007/s10529-012-1082-5subject
Has Abstractpub_date
2013-03-01 00:00:00pages
359-65issue
3eissn
0141-5492issn
1573-6776journal_volume
35pub_type
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