Figure 1. LysA expression in E. coli.
A. Purified LysA-His6 fractions after SDS-PAGE analysis and Coomassie Blue staining. LysA-His6 was produced from pMJC41 in E. coli BL21 (DE3) after isopropyl β-D-1-thiogalactopyranoside induction. B. Expression of LysA-His6 from pMJC41: detection of C-terminal His6tag LysA shows the production of Lysin384-His6 and Lysin241-His6. C. LysA-His6 synthesis from pMJC41 over the time is not always followed by Lysin241-His6 production. D. Synthesis of Lysin241-His6 from pMJC43. Removal of pET29b and LysA (Lysin384-His6) translational signals does not hinder Lysin241-His6 synthesis. The molecular masses in kDa of Lysin384 and Lysin241 are indicated on the left; positions of both proteins are indicated by an arrow on the right. Lysin384 and Lysin241 were detected by Western blotting with an anti-His6 antibody, except for panel A.
