Snaclec that dose-dependently inhibits platelet aggregation induced by ristocetin or low-dose thrombin, but not by high-dose thrombin. Binds to GPIbalpha (GP1BA). In vivo, also dose-dependently induces thrombocytopenia of mice and platelet counts remains at very low level even after 18 hours intravenous injection. Heterodimer of subunits alpha and beta; disulfide-linked. Expressed by the venom gland. Does not induce platelet aggregation in either platelet rich plasma or washed platelets under high-dose conditions. Does not inhibit platelet aggregation induced by high-dose thrombin. Does not react with polyclonal anti-GPVI and anti-GPIIb antibodies (PubMed:21256857). Belongs to the snaclec family.