GP1BB Proteins and Enzymes

Platelet glycoprotein Ib (GPIb) is a heterodimeric transmembrane protein consisting of a disulfide-linked 140 kD alphachain and 22 kD beta chain. It is part of the GPIb-V-IX system that constitutes the receptor for von Willebrand factor(VWF), and mediates platelet adhesion in the arterial circulation. GPIb alpha chain provides the VWF binding site, andGPIb beta contributes to surface expression of the receptor and participates in transmembrane signaling throughphosphorylation of its ...