Strongly inhibits ADP-induced platelet aggregation on human platelet-rich plasma. Also avidly binds to the laminin-binding beta-1 integrins (alpha-3/beta-1, alpha-6/beta-1, and alpha-7/beta-1) in an RGD-independent manner. Heterodimer with subunit alpha; disulfide-linked. Expressed by the venom gland. Heterodimer. Does not interact with the collagen-binding alpha-1/beta-1 (ITGA1/ITGB1) and alpha-2/beta-1 (ITGA2/ITGB1) integrins. Belongs to the disintegrin family. Dimeric disintegrin subfamily.