1B7D:
reference: Crystal structure of neurotoxin Ts1 from Tityus serrulatus provides insights into the specificity and toxicity of scorpion toxins., Polikarpov I, Junior MS, Marangoni S, Toyama MH, Teplyakov A, J Mol Biol 1999 Jul 2;290(1):175-84. PMID: 10388565

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