4PRU:
reference: Structural study of a small molecule receptor bound to dimethyllysine in lysozyme., McGovern RE, Snarr BD, Lyons JA, McFarlane J, Whiting AL, Paci I, Hof F, Crowley PB, Chem Sci. 2015 Jan 1;6(1):442-449. PMID: 25530835

This OCA Structure page
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