Tags: Protein.
Glycoprotein Ib (platelet) alpha polypeptide (GP1BA) also known as CD42b (Cluster of Differentiation 42b) is a human gene.Glycoprotein Ib (GP Ib) is a platelet surface membrane glycoprotein composed of a heterodimer an alpha chain and a beta chain that are linked by disulfide bonds. The Gp Ib functions as a receptor for von Willebrand factor (VWF).