Snake venom phospholipase A2 (PLA2) that shows anticoagulant and neurotoxic activities. PLA2 catalyzes the calcium-dependent hydrolysis of the 2-acyl groups in 3-sn-phosphoglycerides (By similarity). a 1,2-diacyl-sn-glycero-3-phosphocholine + H2O = a 1-acyl-sn-glycero-3-phosphocholine + a fatty acid + H(+) Binds 1 Ca(2+) ion per subunit. Monomer, or homotrimer. Was firstly described as a trimer (PubMed:16508078), but has been reinterpreted with the possibility of being a monomer (PubMed:17372360). Expressed by the venom gland. Belongs to the phospholipase A2 family. Group I subfamily. D49 sub-subfamily. The PDB entry 2OSN is a reinterpretation of the PDB entry 1G2X.