1NQ7:
reference: All-trans retinoic acid is a ligand for the orphan nuclear receptor ROR beta., Stehlin-Gaon C, Willmann D, Zeyer D, Sanglier S, Van Dorsselaer A, Renaud JP, Moras D, Schule R, Nat Struct Biol. 2003 Oct;10(10):820-5. Epub 2003 Sep 7. PMID: 12958591

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