Recombinant expression of antibody fragments in E. coli is often hampered by low expression, inefficient translocation and aggregation in the periplasm. Aggregation problem during in vitro-renaturation is also a limiting factor, when antibody fragments expressed in bacterial cytosol as inclusion bodies. The objective of this work was to achieve and optimise periplasmic production, and to explore novel strategies for in vitro renaturation from cytoplasmic IB's. For the study, the single chain antibody fragment against the hapten oxazolone was chosen as the model system. In this book, results...