Fig. 2From: Cell surface engineering of Bacillus subtilis improves production yields of heterologously expressed α-amylasesThe α-amylase activity in selected expression hosts grown to stationary phase in LB. a From left to right, they are the different α-amylases; for each α-amylase, the column pattern represents different hosts. b The pI and negative charge of mature α-amylase proteins. The blue line represents pIs and the red line represents negative charge at pH 7. c Western blotting of α-amylase products in the medium using an antibody against Strep-tagBack to article page