Fig. 2. (a) SDS–PAGE of the purified trypsin from S. basilisca. Lane 1: standard proteins marker of different molecular weights; lane 2: crude enzyme extract; lane 3: Sephadex G-100; lane 4: Mono Q-Sepharose; lane 5: purified trypsin; lane
6:zymogram of the purified trypsin. (b) Zymogram detection of proteolytic activity (lane 1) and Native-PAGE (lane 2) of the purified trypsin from S. basilisca.