2VGX:
reference: Structure of the Yersinia enterocolitica type III secretion translocator chaperone SycD., Buttner CR, Sorg I, Cornelis GR, Heinz DW, Niemann HH, J Mol Biol. 2008 Jan 25;375(4):997-1012. Epub 2007 Nov 12. PMID: 18054956

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