6EBX:
reference: Structure determination of a dimeric form of erabutoxin-b, crystallized from a thiocyanate solution., Saludjian P, Prange T, Navaza J, Menez R, Guilloteau JP, Ries-Kautt M, Ducruix A, Acta Crystallogr B 1992 Aug 1;48 ( Pt 4):520-31. PMID: 1418823

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