Trypsin-catalysed synthesis of oligopeptide amides: comparison of catalytic efficiency among trypsins of different origin (bovine, Streptomyces griseus and chum salmon). |
| |
Authors: | Haruo Sekizaki Kunihiko Itoh Eiko Toyota Kazutaka Tanizawa |
| |
Institution: | Faculty of Pharmaceutical Sciences, Health Sciences University of Hokkaido, Japan. |
| |
Abstract: | A procedure has been developed for the synthesis of oligopeptide amide using inverse substrates as acyl donors with amino acid amide instead of p-nitroanilide as acyl acceptor and trypsins of different origin (bovine, Streptomyces griseus and chum salmon trypsins) as the catalyst. The effectiveness of this procedure was demonstrated by the synthesis of a pentapeptide, Boc-Leu5]-enkephalin amide, as a model compound. The method was the first enzymatic method shown to be successful at each successive coupling step for the synthesis of the oligopeptide. Bovine and chum salmon trypsins were superior to Streptomyces griseus trypsin as the catalyst. |
| |
Keywords: | bovine trypsin Streptomyces griseus trypsin chum salmon trypsin inverse substrate enzymatic peptide synthesis p‐guanidinophenyl ester |
|