Abstract
Avidins represent an interesting group of proteins showing high structural similarity and ligand-binding properties but low similarity in primary structure. In this study, we show that it is possible to create functional chimeric proteins from the avidin protein family when applying DNA family shuffling to the genes of the avidin protein family: avidin, avidin related gene 2 and biotin-binding protein A. The novel chimeric proteins were selected by phage display biopanning against biotin, and the selected enriched proteins were characterized, displaying diverse features distinct from the parental genes, including binding to cysteine.
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