Fig. 3From: Construction of a trifunctional cellulase and expression in Saccharomyces cerevisiae using a fusion proteinPlate assay of cellulase activity in transformed S. cerevisiae. CMC agar plates were stained with trypan blue and enzyme activity was detected by the presence of a halo around the colony. WT: wild-type strain, 1–4: recombinant strains with different cellulase activityBack to article page