A novel serine protease complexed with alpha2-macroglobulin from skeletal muscle of lizard fish (Saurida undosquamis).

A novel fish muscle serine protease named muscle soluble serine protease (MSSP) was purified from the soluble fraction of lizard fish (Saurida undosquamis: Synodontidae) muscle by ammonium sulfate fractionation followed by four steps of column chromatographies. In native-PAGE, the purified enzyme appeared as a single band with an estimated mol. mass of approximately 380 kDa by gel filtration.

Purification and characterization of myofibril-bound serine protease from lizard fish (Saurida undosquamis) muscle.

Myofibril-bound serine protease (MBSP) from lizard fish (SAURIDA UNDOSQUAMIS: Synodontidae) skeletal muscle was purified to homogeneity with higher purification (1260-fold) and higher recovery (7%) than our previous report in lizard fish (Saurida wanieso). The new purification method combines a heat-treatment for dissociation from washed myofibrils, acid-treatment at pH 5.0 before and after lyophilization, and alcohol-treatment, followed by two column chromatographies.