Catalyzes the hydrolysis of phosphatidylcholine with phospholipase A1 activity (PubMed:29605550). Shows hemolytic activity (By similarity). a 1,2-diacyl-sn-glycero-3-phosphocholine + H2O = a 2-acyl-sn-glycero-3-phosphocholine + a fatty acid + H(+) Loses its activity after heat treatment. Expressed by the venom gland. Is not glycosylated. Causes an allergic reaction in human. Binds to IgE. Belongs to the AB hydrolase superfamily. Lipase family.