Endothelial protein C receptor (EPCR) also known as activated protein C receptor (APC receptor) is a protein that in humans is encoded by the PROCRgene. PROCR has also recently been designated CD201 (cluster of differentiation 201).
The protein encoded by this gene is a receptor for protein C that enhances its activation. Protein C is an anti-coagulant serine protease activated by the blood coagulation pathway.
EPCR protein is an N-glycosylated type I membrane protein that enhances the activation of protein C. It belongs to the MHC class I/CD1 family of proteins, that is characterized by having a deep groove, that in other proteins in the family (but not in EPCR) is usually used for antigen binding.
Like the CD1 series, EPCR has a lipid in the corresponding groove. The bound lipid in EPCR is usually phosphatidylcholine, but it may be phosphatidylethanolamine, and it contributes to protein C binding, though probably not through direct contact 
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