Fig. 2From: Development of chromosome-based T7 RNA polymerase and orthogonal T7 promoter circuit in Escherichia coli W3110 as a cell factoryThe protein expression analysis of four E. coli strains with and without induction by 0.1 mM IPTG. The LacZ protein is approximately 116.4 kDa, as indicated by the gray arrow. The T7RNAP was approximately 98.8 kDa, as indicated by the red arrowBack to article page