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Mouse Monoclonal to PAC-1

PAC-1 (IgM)

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CD41 (platelet glycoprotein IIb, integrin alpha IIb) is composed of two subunits (120 kDa transmembrane alpha chain and 23 kDa extracellular beta chain) and interacts with CD61 (platelet glycoprotein IIIa, integrin beta 3) in the presence of calcium to form a functional adhesive protein receptor. CD41/CD61 complex is one of the earliest markers of the megakaryocytic lineage. Upon blood vessel damage, this receptor binds to a variety of proteins including von Willebrand factor, fibrinogen, fibronectin and vitronectin, and it is involved in platelet aggregation.


The mouse monoclonal antibody PAC-1 recognizes an activation-induced conformational epitope PAC-1 on CD41/CD61 complex (gpIIb/IIIa), also known as integrin alpha IIb beta 3, a receptor which mediates platelet aggregation.

Regulatory Status


Human platelets

Species Reactivity:

  • Human

Negative Species:


  • Flow Cytometry
  • Immunoprecipitation
  • Immunocytochemistry
Usage note:
Indicated dilutions are recommended starting points for use of this product. Working concentrations should be determined by the investigator.

Product Specific References

  • *Shattil SJ, Hoxie JA, Cunningham M, Brass LF: Changes in the platelet membrane glycoprotein IIb.IIIa complex during platelet activation. J Biol Chem. 1985 Sep 15;260(20):11107-14. [Abstract] [Full Text]
  • *Shattil SJ, Cunningham M, Hoxie JA: Detection of activated platelets in whole blood using activation-dependent monoclonal antibodies and flow cytometry. Blood. 1987 Jul;70(1):307-15. [Abstract] [Full Text]
  • *Trikha M, Timar J, Lundy SK, Szekeres K, Cai Y, Porter AT, Honn KV: The high affinity alphaIIb beta3 integrin is involved in invasion of human melanoma cells. Cancer Res. 1997 Jun 15;57(12):2522-8. [Abstract] [Full Text]
  • For research use only. Not for drug, diagnostic or other use.

    Example Data

    PAC-1 FITC

    Fig. 1. Surface staining of PAC-1 on PHA-activated (1 hour) human peripheral blood with anti-PAC-1 (PAC-1) FITC.

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