Fig. 1From: A novel protein fusion partner, carbohydrate-binding module family 66, to enhance heterologous protein expression in Escherichia coliMap of the constructed protein expression plasmid harboring CBM66 fusion tag. The target protein was designed to be expressed with a CBM66 tag on the N-terminus and a His-tag on the C-terminus under the T7 promoter. The flexible linker between CBM66 and the passenger protein comprised a double repeat of four glycine and one serine [(G4S)2]. EK site indicates enterokinase recognition sequence (D4K)Back to article page