Purification of recombinant rBimA protein was carried
out by affinity chromatography under denatured condition
using commercially available Ni-NTA columns (Qiagen,
Germany) using AKTA explorer fast protein liquid chromatography
system (GE Healthcare, Sweden) as per the
manufacturer’s instructions. The fermented cell washed
pellet of 1.0 g quantity was suspended with 20-mL prechilled
cell lysis buffer (10 mM of Tris, 10 mM of EDTA,
150 mM of NaCl, and 100 mg/mL of lysozyme; pH 7.5) in the
50-mL sterile tube, and the cell suspension was sonicated
for 15 minutes using high gain probe set at 40% frequency