4O1Q:
reference: Site-directed mutagenesis of Gln103 reveals the influence of this residue on the redox properties and stability of MauG., Shin S, Yukl ET, Sehanobish E, Wilmot CM, Davidson VL, Biochemistry. 2014 Mar 4;53(8):1342-9. doi: 10.1021/bi5000349. Epub 2014 Feb 19. PMID: 24517455

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