1PKV:
reference: The structure of the N-terminal domain of riboflavin synthase in complex with riboflavin at 2.6A resolution., Meining W, Eberhardt S, Bacher A, Ladenstein R, J Mol Biol 2003 Aug 29;331(5):1053-63. PMID: 12927541

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