PMID: 3056721Nov 1, 1988

The influence of water on protease-catalyzed peptide synthesis in acetonitrile/water mixtures

European Journal of Biochemistry
M ReslowB Mattiasson


Protease-catalyzed peptide synthesis in acetonitrile/water mixtures, containing 0-90% water, was investigated. alpha-Chymotrypsin, as well as thermolysin, were deposited on solid supports, prior to exposure to the reaction media. Peptide syntheses were performed using both a kinetically controlled process (chymotrypsin) and an equilibrium-controlled synthesis (thermolysin). The activity of chymotrypsin decreased at low water contents. However, at low water contents (1-10%) hydrolytic side reactions were suppressed and high yields of dipeptides were obtained. Optimal water content for the thermolysin-catalyzed reaction was 4-8%. The dipeptides produced were fully soluble in the reaction mixtures. High operational stability for alpha-chymotrypsin was obtained during 216 h of reaction.


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May 1, 1984·International Journal of Peptide and Protein Research· Mitin YuV Gorbunova EYu
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Related Concepts

Acetonitrile, 3H-labeled
Drug Stability
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