Figure 1From: Fusion protein comprised of the two schistosomal antigens, Sm14 and Sm29, provides significant protection against Schistosoma mansoni in murine infection modelIllustration of the created plasmids and purified antigens described in the study. (A) Schematic representation of the construction of pQE31-FSm14/29, pQE31-Sm14 and pQE31-Sm29. Amp: β-lactamase coding sequence; ColE1: ColE1 origin of replication; PT5: T5 promoter; lac O: lac operator element; RBS: Ribosomal Binding Site; H: Hexahistidine tag; MCS: Multiple Cloning Site; T: Terminator; B: BamHI recognition site; K: KpnI recognition site; P: PstI recognition site. (B) SDS-PAGE of antigens purified from corresponding induced E. coli M15 (pREP4) strains. Lane 1, protein ladder; lanes 2 and 3, two successive elutions of the fusion antigen FSm14/29; lanes 4 and 5, two successive elutions of Sm14 antigen; lanes 6 and 7, two successive elutions of Sm29 antigen. Buffer E (pH 4.5) was used for elutions under denaturing conditions following induction with 0.3 mM IPTG at 25°C for 16 h.Back to article page