Title
Characterization and further stabilization of a new anti-prelog specific alcohol dehydrogenase from Thermus thermophilus HB27 for asymmetric reduction of carbonyl compounds
Date Issued
01 January 2012
Access level
metadata only access
Resource Type
journal article
Author(s)
Rocha-Martín J.
Bolivar J.M.
Hidalgo A.
Berenguer J.
Guisán J.M.
López-Gallego F.
Centro de Biología Molecular Severo Ochoa
Publisher(s)
Elsevier
Abstract
The use of dehydrogenases in asymmetric chemistry has exponentially grown in the last decades facilitated by the genome mining. Here, a new short-chain alcohol dehydrogenase from Thermus thermophilus HB27 has been expressed, purified, characterized and stabilized by immobilization on solid supports. The enzyme catalyzes both oxidative and reductive reactions at neutral pH with a broad range of substrates. Its highest activity was found towards the reduction of 2,2',2″-trifluoroacetophenone (85. U/mg at 65. °C and pH 7). Moreover, the enzyme was stabilized more than 200-fold by multipoint covalent immobilization on agarose matrixes via glyoxyl chemistry. Such heterogeneous catalyst coupled to an immobilized cofactor recycling partner performed the quantitative asymmetric reduction of 2,2',2″-trifluoroacetophenone and rac-2-phenylpropanal to (S)-(+)-α-(trifluoromethyl)benzyl alcohol and (R)-2-phenyl-1-propanol with enantiomeric excesses of 96% and 71%, respectively. To our knowledge this is the first alcohol dehydrogenase from a thermophilic source with anti-Prelog selectivity for aryl ketones and that preferentially produces R-profens. © 2011 Elsevier Ltd.
Start page
343
End page
350
Volume
103
Issue
1
Language
English
OCDE Knowledge area
Química analítica
Scopus EID
2-s2.0-82955162467
PubMed ID
Source
Bioresource Technology
ISSN of the container
18732976
Sponsor(s)
Ministerio de Ciencia e Innovación - BIO-2008-01481, BIO2007-60245, CTQ2009-07568 - MICINN Financial support from Madrid Region council CAM (grants S0505/PPQ/0344 ), CSIC (JAE-doc 108) and the Spanish Ministry of Science (Programa Ramón y Cajal and grants BIO-2008-01481, BIO2007-60245 and CTQ2009-07568 ) is gratefully acknowledged. An institutional grant from the Fundación Ramón Areces to the CBMSO is also acknowledged.
Sources of information: Directorio de Producción Científica Scopus