Potent platelet activator that acts via GPIb (GP1BA/GP1BB) (PubMed:15175804). After activation by the toxin, the receptor is redistributed on platelet surface thanks to cytoskeletal translocation. The indirect activation of integrin alpha-IIb/beta-3 (ITGA2B/ITGB3) also induced by the toxin is downstream the cytoskeletal translocation of GPIb (PubMed:16102113). Dimer and tetramer of heterodimers of alpha and beta subunits ((alphabeta)(2) and (alphabeta)(4)); disulfide-linked. These two multimeric forms are found. Expressed by the venom gland. The complex is glycosylated. Does not act by binding GPVI (GP6) and integrin alpha-2/beta-1 (ITGA2/ITGB1) (PubMed:15175804 and PubMed:15501291). Does not bind to platelet GPIX (GP9), GPIIb (ITGA2B), and GPIIIa (ITGB3) (PubMed:15501291). Belongs to the snaclec family.