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Background Disulfide-rich peptides (DRPs) are found throughout nature. They are suitable scaffolds for drug development due to their small cores, whose disulfide bonds impart extraordinary chemical and biological stability. A challenge in developing a DRP therapeutic is to engineer binding to a specific target. This challenge can be overcome by (i) sampling the large sequence space of a given scaffold...
Crystallographic studies of membrane proteins have been steadily increasing despite their unique physical properties that hinder crystal formation. Co-crystallization with antibody fragments has emerged as a promising solution to obtain diffraction quality crystals. Antibody binding to the target membrane protein can yield a homogenous population of the protein. Interantibody interactions can also...
Ecotin, a dimeric serine protease inhibitor from Escherichia coli, is a novel platform for inhibitor design. An approach using the three-dimensional structure of the ecotin-trypsin complex to guide combinatiorial design efforts was taken to create potent bidentate ecotin inhibitors for trypsin and human urokinase-type plasminogen activator (uPA). The ecotin surface loop that was redesigned is composed...
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