1CHZ:
reference: Structure of a new neurotoxin from the scorpion Buthus martensii Karsch at 1.76 A., He XL, Deng JP, Wang M, Zhang Y, Wang DC, Acta Crystallogr D Biol Crystallogr. 2000 Jan;56(Pt 1):25-33. PMID: 10666623

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