1Q2K:
reference: Solution structure of BmBKTx1, a new BKCa1 channel blocker from the Chinese scorpion Buthus martensi Karsch., Cai Z, Xu C, Xu Y, Lu W, Chi CW, Shi Y, Wu J, Biochemistry 2004 Apr 6;43(13):3764-71. PMID: 15049683

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