6EZB:
reference: Electrostatic Potential in the tRNA Binding Evolution of Dihydrouridine Synthases., Bou-Nader C, Bregeon D, Pecqueur L, Fontecave M, Hamdane D, Biochemistry. 2018 Sep 18;57(37):5407-5414. doi: 10.1021/acs.biochem.8b00584., Epub 2018 Aug 31. PMID: 30149704

This OCA Structure page
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