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Function

Integrin alpha-IIb/beta-3 is a receptor for fibronectin, fibrinogen, plasminogen, prothrombin, thrombospondin and vitronectin. It recognizes the sequence R-G-D in a wide array of ligands. It recognizes the sequence H-H-L-G-G-G-A-K-Q-A-G-D-V in fibrinogen gamma chain. Following activation integrin alpha-IIb/beta-3 brings about platelet/platelet interaction through binding of soluble fibrinogen. This step leads to rapid platelet aggregation which physically plugs ruptured endothelial cell surface.

Post-translational modifications

Integrin alpha-IIb heavy chain

Cleaved by ELANE; the cleavage promotes activation of platelet fibrinogen receptor integrin alpha-IIb/beta-3.

Sequence similarities

Belongs to the integrin alpha chain family.

Cellular localization

  • Membrane
  • Single-pass type I membrane protein

Alternative names

CD41, Integrin alpha-IIb, GPalpha IIb, Platelet membrane glycoprotein IIb, GPIIb, Itga2b

Target type

Proteins

Primary research area

Cardiovascular

Molecular weight

112678Da

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Primary Antibodies

Target

Reactive species