A spontaneous mutation of integrin alpha IIb beta 3 (platelet glycoprotein IIb-IIIa) helps define a ligand binding site.
Bajt ML, Ginsberg MH, Frelinger AL, Berndt MC, Loftus JC. A spontaneous mutation of integrin alpha IIb beta 3 (platelet glycoprotein IIb-IIIa) helps define a ligand binding site. J Biol Chem. 1992 Feb 25; 267(6):3789-94.