Protein C (UniProt ID E7END6) is one of many natural anticoagulants in blood. It is a vitamin K dependent serine protease that regulates blood coagulation. Synthetic PROC glycopeptide fragment (Thr19-Arg38; aa length 20). O-Glycosylation (α-D-GalNAc) at position Thr19. The C-terminus is carboxylic acid