2QF5:
reference: High-resolution Structure of the Major Periplasmic Domain from the Cell Shape-determining Filament MreC., Lovering AL, Strynadka NC, J Mol Biol. 2007 Sep 28;372(4):1034-44. Epub 2007 Jul 26. PMID: 17707860

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