5YNZ:
reference: Crystal structures of monometallic dihydropyrimidinase and the human dihydroorotase domain K1556A mutant reveal no lysine carbamylation within the active site., Cheng JH, Huang YH, Lin JJ, Huang CY, Biochem Biophys Res Commun. 2018 Oct 28;505(2):439-444. doi:, 10.1016/j.bbrc.2018.09.153. Epub 2018 Sep 27. PMID: 30268498

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