Abstract
We present a simple colony assay method for screening antibody libraries based on autoinduction of antibody fragment expression. This protocol eliminates the need for colony size monitoring and a separate induction step for single-chain Fv (scFv) antibody fragment expression. Here, scFvs are expressed in an automatic and timely fashion during the assay, resulting in high yields of positive clones and substantial time savings. The method was used successfully to establish monoclonal scFvs with high affinity and specificity against human IgG.
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