5LFD:
reference: The Structure and Function of a Microbial Allantoin Racemase Reveal the Origin and Conservation of a Catalytic Mechanism., Cendron L, Ramazzina I, Puggioni V, Maccacaro E, Liuzzi A, Secchi A, Zanotti G, Percudani R, Biochemistry. 2016 Nov 22;55(46):6421-6432. Epub 2016 Nov 7. PMID: 27797489

This OCA Structure page
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