Platelet membrane glycoprotein

Platelet membrane glycoproteins are a diverse group of surface proteins found on platelets that play essential roles in hemostasis by mediating platelet adhesion to damaged blood vessels and promoting platelet–platelet cohesion during clot formation. The major classes include integrins such as αIIbβ3 (GPIIb/IIIa), which binds fibrinogen and is central to aggregation; the GPIb/V/IX complex that binds von Willebrand factor for initial adhesion; collagen receptors like GPIa/IIa and GPVI; and other receptors including P-selectin. These molecules act as therapeutic targets for antithrombotic drugs but can also be implicated in inherited bleeding disorders when defective. Their function is tightly regulated through interactions with extracellular matrix proteins and intracellular signaling pathways. Note: "Platelet glycoproteins" refers collectively to several distinct protein complexes rather than a single molecule. For structured data purposes, it may be necessary to specify individual members such as "Integrin alpha-IIb beta 3" or "Glycoprotein Ib alpha" if more granularity is required.

Other names

Platelet glycoproteinsPlatelet surface glycoproteinsGP (with specific complexes such as GPIIb/IIIa, GPIb-IX-V, etc.)

Inhibition of fibrinogen binding to integrin αIIbβ3 prevents platelet aggregation and thrombus formation