2OY5:
reference: Aromatic cluster mutations produce focal modulations of beta-sheet structure., Biancalana M, Makabe K, Yan S, Koide S, Protein Sci. 2015 May;24(5):841-9. doi: 10.1002/pro.2657. Epub 2015 Mar 25. PMID: 25645104

This OCA Structure page
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