This indicated the enhanced production and secretion of D1
This indicated the enhanced production and secretion of D1. 3 scFv in the presence of xylose and confirmed the correct function of the here used xylose-inducible promoter system. 168, DB431 and WB800N differing in the number of produced proteases. Starting with shake flasks (150?mL), the bioprocess was scaled down to microtiter plates (1250?L) as well as scaled up to laboratory-scale bioreactors (2?L). The highest extracellular concentration CGP-52411 of D1.3 scFv (130?mg?L?1) and highest spaceCtime-yield (8?mg?L?1?h?1) were accomplished with WB800N, a strain deficient in eight proteases. These results were reproduced by the production and secretion of a recombinant penicillin G acylase (Pac). Conclusions The genus provides high potential microbial host systems for the secretion of challenging heterologous proteins like antibody fragments and large proteins at CGP-52411 high titers. In this study,…