Synthetic Peptide Mimics of the Bowman-Birk Inhibitor Protein
Proteins of the Bowman-Birk inhibitor family of serine proteinase inhibitors interact with the enzymes they inhibit via an exposed surface loop that adopts the canonical proteinase inhibitory conformation. The resulting non-covalent complex renders the proteinase inactive. This inhibition mechanism is common for the majority of serine proteinase inhibitor proteins and many analogous examples are known. A particular feature of the Bowman-Birk inhibitor protein, however, is that the interacting loop is a particularly well-defined disulfide-linked short b-sheet region. Moreover, synthetic peptides based on this region keep the same structure as the corresponding part of the full sized protein and also retain inhibitory activity. This review describes the background to inhibition by Bowman-Birk inhibitor proteins (and derived peptides) and shows how peptides based on the reactive site can be manipulated in order to generate potent proteinase inhibitors with redirected specificities.
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Document Type: Review Article
Publication date: 2001-07-01
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