Fig. 5From: Expression and purification of soluble recombinant β-lactamases using Escherichia coli as expression host and pET-28a as cloning vectorEffects of target protein length (A: purification of insoluble recombinant TEM-1 (protein 2) using buffer A' and B' (both containing 4 M urea) as the mobile phase) and 6 × His-tag fusion position (B–D: purification of protein 3 (soluble recombinant SHV-1 and TEM-1) using buffer A and B as the mobile phase) on the purification efficiency of recombinant β-lactamasesBack to article page