1A2X:
reference: Crystal structure of troponin C in complex with troponin I fragment at 2.3-A resolution., Vassylyev DG, Takeda S, Wakatsuki S, Maeda K, Maeda Y, Proc Natl Acad Sci U S A 1998 Apr 28;95(9):4847-52. PMID: 9560191

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