Fig. 6From: Development of a microbial protease for composting swine carcasses, optimization of its production and elucidation of its catalytic hydrolysis mechanismSDS-PAGE results of proteases at various purification steps (In order to improve the clarity and conciseness of the presentation, this gel was the cropped Additional file 1: Fig. S3). Line 1: Marker; Line 2: Culture supernatant; Line 3: (NH4)2SO4 precipitation (20–40%); and Line 4: Sephadex G-75Back to article page