Common Krait venom toxins

Common Krait (Bungarus caeruleus) venom toxins represent a potent cocktail of proteins that primarily target the peripheral nervous system, leading to neuromuscular paralysis. The most clinically significant components are the alpha-bungarotoxins and beta-bungarotoxins (UniProt P01378, P00617). Alpha-bungarotoxins are post-synaptic neurotoxins that bind with high affinity and near-irreversibility to nicotinic acetylcholine receptors (nAChR) at the neuromuscular junction, effectively blocking cholinergic transmission. Beta-bungarotoxins act pre-synaptically, possessing phospholipase A2 activity that damages nerve terminals and prevents the release of acetylcholine. Envenomation by the Common Krait is a medical emergency characterized by silent symptoms, often lacking local pain but progressing rapidly to respiratory failure and death (StatPearls: Snake Toxicity). The primary therapeutic approach involves the administration of antivenom, which contains equine or ovine-derived antibodies designed to bind and neutralize these circulating toxins (WHO Guidelines). Despite their lethality, these toxins are widely used in biochemical research to map receptor structures and study synaptic physiology.

Other names

Bungarus caeruleus venomKrait neurotoxinsBungarotoxinsCommon Krait neurotoxic proteins

Neutralization of venom proteins by specific antibodies (antivenom) to prevent binding to physiological targets.