DTPFECPSDWSTHRQYCYKFFQQKESWDDRSEYDAERFCSEQAKGGHLVSIESDEEADFVAQLVAPNIGKSKYYVWIGLRIENKKQQCSSKWSDYSSVSYENLVRGNVKKCFALEKKQGFRKWVNIDCVEGNPFVCKFIRPR Binds to platelet glycoprotein (GP)Ib and functions as a receptor blocker for vWF binding to GPIb. The platelet GPIb- binding site resides on the beta and not on the alpha subunit. Does not induce platelet aggregation or serotonin release from platelets. 142 Glycoprotein IB-binding protein subunit alpha GPIBA_BOTJA