3ND2:
reference: Quantitative structural analysis of importin-beta flexibility: paradigm for solenoid protein structures., Forwood JK, Lange A, Zachariae U, Marfori M, Preast C, Grubmuller H, Stewart M, Corbett AH, Kobe B, Structure. 2010 Sep 8;18(9):1171-83. PMID: 20826343

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