4HA7:
reference: Structural and functional insights into Saccharomyces cerevisiae riboflavin biosynthesis reductase RIB7., Lv Z, Sun J, Liu Y, PLoS One. 2013 Apr 19;8(4):e61249. doi: 10.1371/journal.pone.0061249. Print 2013. PMID: 23620735

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