Efficient production of active form of recombinant cassava hydroxynitrile lyase using Escherichia coli in low-temperature culture

• Published in: Applied microbiology and biotechnology Vol. 79; no. 4; pp. 563 - 569
• Main Authors: Semba, Hisashi, Ichige, Eita, Imanaka, Tadayuki, Atomi, Haruyuki, Aoyagi, Hideki
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Berlin/Heidelberg : Springer-Verlag 01.06.2008; Springer Berlin Heidelberg; Springer Nature B.V
• Subjects: Aldehyde-Lyases - genetics; Aldehyde-Lyases - metabolism; Base Sequence; Bioreactors; Biotechnologically Relevant Enzymes and Proteins; Biotechnology; Cassava; Cell Culture Techniques - methods; Cell growth; Cloning; Codon - genetics; Cultivation; Cyanohydrin; E coli; Enzymatic activity; Enzymes; Escherichia coli; Escherichia coli - genetics; Escherichia coli - growth & development; Escherichia coli - metabolism; Genetic recombination; Genomes; High-density culture; Hydroxynitrile lyase; Life Sciences; Low temperature; Low temperature cultivation; Manihot - enzymology; Manihot esculenta; Methods; Microbial Genetics and Genomics; Microbiology; Molecular Sequence Data; Plant Proteins - genetics; Plant Proteins - metabolism; Productivity; Protein Engineering; Proteins; Recombinant enzyme; Recombinant Proteins - genetics; Recombinant Proteins - metabolism; Studies; Temperature; Yeast; Recombinant enzyme; High-density culture; Hydroxynitrile lyase; Low temperature cultivation; Cyanohydrin
• ISSN: 0175-7598; 1432-0614
• DOI: 10.1007/s00253-008-1464-8

Overexpression and production of the high concentration of hydroxynitrile lyase from cassava (Manihot esculenta (MeHNL, EC 4.1.2.39)) were investigated. Hydroxynitrile lyase is a useful enzyme for the production of optically active cyanohydrin compounds. The production of MeHNL was increased by changing the rare codons of the original sequence of cassava MeHNL. However, most of the produced MeHNL was in the insoluble form. In order to increase the solubility of MeHNL, the effects of the cultivation temperature were investigated. When the cultivation temperature was reduced, the cell yield and the ratio of soluble MeHNL increased significantly. The enzyme activity and yield at low-temperature cultures (17 °C) were 850 times higher than those obtained at the optimum growth temperature of 37 °C. The rate of MeHNL production in the present study was calculated as 3,000 unit/h. Low-temperature cultivation was very effective in improving the productivity of the active form of MeHNL. Unlike the temperature-shift method, low-temperature cultivation has more potential for the large-scale production of MeHNL for the optically active cyanohydrin production.