High-Level Expression of Bacillus naganoensis Pullulanase from Recombinant Escherichia coli with Auto-Induction: Effect of lac Operator
Figure 2
SDS-PAGE analysis of PUL expression in E. coli BL21(DE3)/pET-20b(+)-pul before and after degeneration.
Lane M: protein molecular weight marker; Lane 1: total protein after degeneration; Lane 2: total protein before degeneration.