Figure 4From: Pichia pastoris Aft1 - a novel transcription factor, enhancing recombinant protein secretion Screening results of improved carboxylesterase-AFT1 P. pastoris strains. Secretion levels: determined by ELISA and normalized to the respective starting strain. Starting strains: CE#12 (blue, low level expressing strain), CE#18 (grey, high level expressing strain). AFT1-A and AFT1-B: AFT1 overexpressing clones.Back to article page