Fig. 5From: Production of a high-efficiency cellulase complex via β-glucosidase engineering in Penicillium oxalicum The increase of β-glucosidase at the protein level analyzed by SDS-PAGE and mass spectrometry. Equal amount (a) and equal volume (b) of crude enzymes of five BGL(X) over-expression mutants and RE-10 were used for SDS-PAGE analysis and MS identification (α BGL1; β BGL4; γ BGL5)Back to article page