3D96:
reference: Structural analysis of site-directed mutants of cellular retinoic acid-binding protein II addresses the relationship between structural integrity and ligand binding., Vaezeslami S, Jia X, Vasileiou C, Borhan B, Geiger JH, Acta Crystallogr D Biol Crystallogr. 2008 Dec;64(Pt 12):1228-39. Epub 2008, Nov 18. PMID: 19018099

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