Snake venom toxins from Crotalus basiliscus

The snake venom toxins from Crotalus basiliscus (Mexican west-coast rattlesnake) constitute a complex biochemical mixture primarily composed of enzymes and non-enzymatic proteins that facilitate prey capture and digestion (Wikipedia, NIH). The most abundant components are snake venom metalloproteinases (SVMPs), which account for approximately 68% of the venom and are the primary drivers of hemorrhage and local tissue necrosis (NIH, ResearchGate). Phospholipases A2 (PLA2s) make up about 14% and are the primary contributors to the venom's lethality through myotoxic and neurotoxic effects, often causing muscle necrosis and respiratory distress (NIH, UniProt). Other significant constituents include snake venom serine proteases (SVSPs), disintegrins like basilicin, and cysteine-rich secretory proteins (CRISPs) (UniProt, NIH). These toxins act synergistically to disrupt hemostasis, damage muscle tissue, and impair neuromuscular transmission (NIH). Clinical management of envenomation relies on polyvalent antivenoms, such as Antivipmyn or Anavip, which utilize purified antibodies to neutralize these toxins (NIH, Utah.edu). Additionally, specific toxins from this species are being investigated for their potential therapeutic utility in treating cardiovascular diseases and certain types of cancer (NIH).

Other names

Mexican west-coast rattlesnake venomCrotalus basiliscus venomMexican green rattler venom

Antivenoms contain antibodies or antibody fragments (Fab or F(ab')2) that bind to and neutralize the various toxic components of the venom, preventing their interaction with physiological targets such as the vascular endothelium, coagulation factors, and neuromuscular junctions (NIH, Utah.edu).