Abstract
High-yield expression of quality antibody fragments is indispensable for research and diagnosis. Most recombinant antibody fragments are expressed in Escherichia coli using liquid cultures; however, their yields and quality are often poor. Herethe authors expressed a single-chain variable fragment in E. coli cultivated on the wet surface of a solid support. Compared with a liquid culture, the authors obtained 2.5-times more single-chain variable fragments with membrane-cultivated E. coli. This method has two important advantages: it enables high yields of periplasmic single-chain variable fragments compared with liquid culture and offers simple and rapid expression and extraction.
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