1LVC:
reference: Physiological calcium concentrations regulate calmodulin binding and catalysis of adenylyl cyclase exotoxins., Shen Y, Lee YS, Soelaiman S, Bergson P, Lu D, Chen A, Beckingham K, Grabarek Z, Mrksich M, Tang WJ, EMBO J 2002 Dec 16;21(24):6721-32. PMID: 12485993

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