Biocatalytic production of enantiopure cyclohexane-trans-1,2-diol using extracellular lipases from Bacillus subtilis.
Two extracellular lipases from Bacillus subtilis, B. subtilis lipase A and lipase B, have been expressed in the heterologous host Escherichia coli, biochemically characterized and used for the kinetic resolution of (rac)-trans-1,2-diacetoxycyclohexane. Both enzymes were selectively acting on the (R,R)-enantiomer of the racemic substrate, highly specifically hydrolyzing only one of the two ester groups present, thus allowing the preparation of enantiopure (R,R)- and (S,S)-cyclohexane-trans-1,2-diol. The reaction conditions for the use of purified enzyme and crude cell lyophilizate were optimized and reactions in batch and repetitive batch modes were carried out on a preparative scale to yield enantiopure product (>99% enantiomeric excess).
Institut für Biotechnologie 2, Forschungszentrum Jülich, D-52425 Jülich, Germany.
Jean
J
Detry
Thorsten
T
Rosenbaum
Stephan
S
Lütz
Doris
D
Hahn
Karl-Erich
KE
Jaeger
Michael
M
Müller
Thorsten
T
Eggert
D001412:Bacillus subtilis / Q000201:enzymology*; D001426:Bacterial Proteins / Q000235:genetics / Q000302:isolation & purification* / Q000378:metabolism*; D003001:Cloning, Molecular; D003511:Cyclohexanols / Q000378:metabolism*; D004591:Electrophoresis, Polyacrylamide Gel; D004795:Enzyme Stability; D004926:Escherichia coli; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D008049:Lipase / Q000235:genetics / Q000302:isolation & purification* / Q000378:metabolism*; D011993:Recombinant Fusion Proteins / Q000235:genetics / Q000302:isolation & purification / Q000378:metabolism; D013237:Stereoisomerism; D013379:Substrate Specificity; D013696:Temperature
D001426:Bacterial Proteins; D003511:Cyclohexanols; D011993:Recombinant Fusion Proteins; C064619:1,2-cyclohexanediol; D008049:Lipase