Hydrolyzes ADP with high activity (PubMed:25079051). Shows weak or no activity on 5'-AMP, 5'-GMP, 3'-AMP, ATP, cAMP, and cGMP (PubMed:25079051). Is devoid of monophosphatase and proteinase activities (PubMed:25079051). Dose-dependently inhibits platelet aggregation induced by ADP (IC(50)=0.99 uM) and collagen (IC(50)=1.4 uM) (PubMed:25079051). ADP + H2O = AMP + H(+) + phosphate Binds 2 divalent metal cations per subunit. Optimum pH is 8.5-9.0. Optimum temperature is 60 degrees Celsius. Monomer cleaved in two subunits; disulfide-linked. Is synthesized as a single-chain protein and is subsequently cleaved to form a two-subunit protein held together with disulfide bonds (PubMed:25079051). Expressed by venom gland. Belongs to the nucleotide pyrophosphatase/phosphodiesterase family.