 It has also been shown to play an antagonistic role in the binding of the α7 nicotinic acetylcholine receptor in the brain, and as such has numerous applications in neuroscience research.α-Bungarotoxin is a 74-amino-acid, 8 kDa α-neurotoxin with five disulfide bridges that binds as a competitive antagonist to nicotinic acetylcholine receptors (nAChRs).Like other snake venom α-neurotoxins, it is a member of the three-finger toxin protein family; its tertiary structure consists of a small globular core stabilized by four disulfide bonds, three projecting "finger" loops, and a C-terminal tail.