Efficient isolation of peptide ligands for the endothelial cell protein C receptor (EPCR) using candidate receptor phage display biopanning

Phage display biopanning has been used for a number of applications including ligand generation for targeted drug delivery, targeting gene therapy vectors and identification of protein-protein interaction sites. In this study, a random phage display library was used to isolate peptide ligands to the endothelial protein C receptor (EPCR), identifying 74 different peptide sequences and several motifs. Binding to EPCR was characterized by a solid phase binding assay, demonstrating that 95% of isolated peptides were specific for EPCR. Several homologies with potential relevance to EPCR biology were identified, the most notable being leukolysin (MT-MMP6) and cerastocytin.

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