1QX2:
reference: Designing sequence to control protein function in an EF-hand protein., Bunick CG, Nelson MR, Mangahas S, Hunter MJ, Sheehan JH, Mizoue LS, Bunick GJ, Chazin WJ, J Am Chem Soc 2004 May 19;126(19):5990-8. PMID: 15137763

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