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Identification of Myofibril-bound Serine Protease from Red Seabream (Pagrus major) Ordinary Muscle

Journal of National Fisheries University Volume 68 Issue 1 Page 1-9
published_at 2019-11
68-1-1-9.pdf
[fulltext] 397 KB
Title
マダイ筋原線維結合型セリンプロテアーゼの同定
Identification of Myofibril-bound Serine Protease from Red Seabream (Pagrus major) Ordinary Muscle
Creators Ohkubo Makoto
Creators Yaguchi Shigenori
Creators Kondo Masakazu
Creators Maeda Toshimichi
Source Identifiers
Creator Keywords
red seabream serine protease modori kamaboko
Myofibrillar proteins were prepared from red seabream (Pagrus major) ordinary muscle by washing four times to remove sarcoplasmic proteins. Myosin heavy chain (MHC) of the myofibrillar proteins was degraded at 55℃ without the addition of any protease, and the degree of MHC degradation in red seabream was obviously low in comparison with brushtooth lizardfish (Saurida sp.). Specific activity of the red seabream myofibrillar proteins was approximately one‒thirtieth that of brushtooth lizardfish. Red seabream myofibril‒bound serine protease (MBSP) was solubilized by heat treatment of the washed myofibrillar proteins at 55℃ for 10 min. Hydrolysis of synthetic fluorogenic substrate by both the myofibril‒bound and solubilized MBSPs was inhibited by Pefabloc SC, a serine protease inhibitor. Both MBSPs rapidly hydrolyzed synthetic fluorogenic substrates containing arginine residues at the P_1 position. These results indicate that red seabream MBSP is a trypsin‒type serine protease, as reported in other fish species, such as white croaker (Pennahia argentata) and brushtooth lizardfish, utilized as ingredients of kamaboko.
Languages eng
Resource Type departmental bulletin paper
Publishers National Fisheries University
Date Issued 2019-11
File Version Version of Record
Access Rights open access
Relations
[ISSN]0370-9361