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. 2011 Jul 23;10:56. doi: 10.1186/1475-2859-10-56

Figure 3.

Figure 3

Expression of recombinant GST-VP1 protein in three different E. coli strains. The GST-VP1 protein expression in three E. coli strains, BL21(DE3), BL21-CodonPlus(DE3)-RP and BL21(DE3)-pLysS all containing pGEX-4T-1-VP1 was examined. The GST-VP1 protein was examined and detected using SDS-PAGE (A) and Western-blotting (B). Anti-GST tag monoclonal antibody was used to recognize the VP1 protein. Lane M, pre-stained protein marker; lane 1, 4 and 7, before IPTG induction; lane 2, 5 and 8, after IPTG induction for 1 hrs cultivation; lane 3, 6 and 9, after IPTG induction for 4 h cultivation. The solid triangle pinpoints the expressed VP1 protein.