1DNL:
reference: X-ray structure of Escherichia coli pyridoxine 5'-phosphate oxidase complexed with FMN at 1.8 A resolution., Safo MK, Mathews I, Musayev FN, di Salvo ML, Thiel DJ, Abraham DJ, Schirch V, Structure Fold Des 2000 Jul 15;8(7):751-62. PMID: 10903950

This OCA Structure page
uses Jmol, developed by the Jmol Development Team (documentation).