Nomenclature	Subunits	Ligands	Selective inhibitors (pIC50)	Comment
α1β1	integrin, alpha 1 subunit, integrin, beta 1 subunit (fibronectin receptor, beta polypeptide, antigen CD29 includes MDF2, MSK12)	collagen, laminin	obtustatin (9.1) 11	–
α2β1	integrin, alpha 2 subunit (CD49B, alpha 2 subunit of VLA-2 receptor), integrin, beta 1 subunit (fibronectin receptor, beta polypeptide, antigen CD29 includes MDF2, MSK12)	collagen, laminin, thrombospondin	TCI15 (7.9) 13	–
αIIbβ3	integrin, alpha 2b subunit (platelet glycoprotein IIb of IIb/IIIa complex, antigen CD41), integrin, beta 3 subunit (platelet glycoprotein IIIa, antigen CD61)	fibrinogen, fibronectin, von Willebrand factor, vitronectin, thrombospondin	abciximab, eptifibatide, G4120 12, GR144053, Syk inhibitor III 14, tirofiban	–
α4β1	integrin, alpha 4 subunit (antigen CD49D, alpha 4 subunit of VLA-4 receptor), integrin, beta 1 subunit (fibronectin receptor, beta polypeptide, antigen CD29 includes MDF2, MSK12)	fibronectin, VCAM-1, osteopontin, thrombospondin	natalizumab, TCS2314, BIO1211 (8.3 – 9.0) 9	LDV-FITC is used as a probe at this receptor
αLβ2	integrin, alpha L subunit (antigen CD11A (p180), lymphocyte function-associated antigen 1; alpha polypeptide), integrin, beta 2 subunit (complement component 3 receptor 3 and 4 subunit)	ICAM-1, ICAM-2	efalizumab, A286982 (7.4 – 7.5) 10	–
αVβ3	integrin, alpha V subunit, integrin, beta 3 subunit (platelet glycoprotein IIIa, antigen CD61)	vitronectin, fibronectin, fibrinogen, osteopontin, von Willebrand factor, thrombospondin, tenascin	etaracizumab, echistatin (11.7) 8, P11 (11.6) 8, cilengitide (8.5) 7	–