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Bungarotoxins are a group of closely related neurotoxic proteins derived from the venom of kraits including ''Bungarus multicinctus''. α-Bungarotoxin inhibits the binding of acetylcholine (ACh) to nicotinic acetylcholine receptors; β- and γ-bungarotoxins act presynaptically causing excessive acetylcholine release and subsequent depletion. Both α and β forms have been characterized, the α being similar to the long or Type II neurotoxins from other elapid venoms. There are four types: * α-Bungarotoxin * β-Bungarotoxin * γ-Bungarotoxin * k-Bungarotoxin ==History== Banded Krait venom began to be studied by Chuan-Chiung Chang and Chen-Yuan Lee of the National Taiwan University in the 1950s; however, it was not until 1963 that its components were separated and isolated. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Bungarotoxin」の詳細全文を読む スポンサード リンク
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