Snake venom oligomeric phospholipase A2 that has potent presynaptic neurotoxicity. Chain B is not itself neurotoxic, but it is essential for the neurotoxicity of textilotoxin. Subunit B possesses a very low phospholipase activity. Heterohexamer. 2 forms exist: 2 A or 2 B chains, 2 C chains and 2 covalently-linked D chains, and 1 A or 1 B, 1 C, 2 covalently-linked D chains and 2 differentially glycosylated covalently-linked D chains. Textilotoxin was originally described as pentameric (PubMed:8431471). Expressed by the venom gland. Oligomer: LD(50) is 1 ug/kg by intraperitoneal injection into mice. Belongs to the phospholipase A2 family. Group I subfamily. N49 sub-subfamily.