Fig. A-1 (left figure): Inclusion body preparation and denaturation
Lane 1: Total protein after sonication
Lane 2: The supernatant after centrifugation
Lane 3: Washed with 1 M urea
Lane 4: Dissolved by 8 M urea
Fig. A-2 (right figure): Refolded protein
Lane 1: Refolded tag-free A protein