The heterodimer bitisgabonin-1 is a potent inhibitor of the adhesion of the RGD-dependent integrin alpha-5/beta-1 (ITGA5/ITGB1) to immobilized fibronectin. Heterodimer with bitisgabonin (bitisgabonin-1 is the name of the heterodimer); disulfide-linked. Expressed by the venom gland. Belongs to the disintegrin family. Dimeric disintegrin subfamily.