Snake venom phospholipase A2 (PLA2) that inhibits platelet aggregation induced by ADP, arachidonic acid and PAF (Ref.1). Acts in a enzymatic independent manner on a proteinase-activated receptor (PAR1, F2R) to evoke calcium release through the inositol 1,4,5-trisphosphate receptor (ITPR1, IP3R) and induces mouse aorta contraction (PubMed:25447533). PAR1, phospholipase C and IP3R inhibitors suppress PA2-induced aorta contraction (PubMed:25447533). PLA2 catalyzes the calcium-dependent hydrolysis of the 2-acyl groups in 3-sn-phosphoglycerides. 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. Preincubation with heparin slightly increase the enzymatic activity. Monomer (predominant). Non-covalently linked homodimers are also observed. Expressed by the venom gland. Hemolytic and neurotoxic activities are not detected. Belongs to the phospholipase A2 family. Group II subfamily. D49 sub-subfamily.