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Enzyme Research

Studies from H. Semba and co-authors have provided new information about enzyme research

Published in Genetics and Environmental Health Week, August 20th, 2008

"Hydroxynitrile lyase from cassava, Manihot esculenta (MeHNL), catalyzes the formation of (S)-cyanohydrins from HCN and aldehydes or ketones. (S)-Mandelonitrile was produced on a bench scale with immobilized MeHNL, after optimizing the enzyme expression system using recombinant technology. MeHNL was cloned from a cDNA library prepared from a leaf of Manihot esculenta, and then expressed in a multi-auxotrophic mutant of Saccharomyces cerevisiae cells," scientists in Tsukuba, Japan report.

"The maximum yield of active MeHNL was obtained by integrating transformation 4 times with a tandemly repeated expression cassette. Silica gel was the most suitable support for...

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