6HFN:
reference: Characterization of the catalytic flexible loop in the dihydroorotase domain of the human multi-enzymatic protein CAD., Del Cano-Ochoa F, Grande-Garcia A, Reverte-Lopez M, D'Abramo M, Ramon-Maiques S, J Biol Chem. 2018 Oct 12. pii: RA118.005494. doi: 10.1074/jbc.RA118.005494. PMID: 30315107

This OCA Structure page
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