1TSK:
reference: Solution structure of TsKapa, a charybdotoxin-like scorpion toxin from Tityus serrulatus with high affinity for apamin-sensitive Ca(2+)-activated K+ channels., Blanc E, Lecomte C, Rietschoten JV, Sabatier JM, Darbon H, Proteins 1997 Nov;29(3):359-69. PMID: 9365990

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