4ZO1:
reference: Structural mechanism for signal transduction in RXR nuclear receptor heterodimers., Kojetin DJ, Matta-Camacho E, Hughes TS, Srinivasan S, Nwachukwu JC, Cavett V, Nowak J, Chalmers MJ, Marciano DP, Kamenecka TM, Shulman AI, Rance M, Griffin PR, Bruning JB, Nettles KW, Nat Commun. 2015 Aug 20;6:8013. doi: 10.1038/ncomms9013. PMID: 26289479

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