Crystal Structure of Bucain, a Three-Fingered Toxin from the Venom of the Malayan Krait (Bungarus candidus)

Bucain, a potent neurotoxin isolated from the venom of the Malayan krait (Bungarus candidus), induces paralysis and death. Its crystal structure has been determined at 2.10 A resolution and based on the molecular topology and hydrophobicity profile is structurally classified as a three-fingered α-neurotoxin possessing a positively charged AChR-binding site.