3QYX:
reference: Atypical DNA recognition mechanism used by the EspR virulence regulator of Mycobacterium tuberculosis., Blasco B, Stenta M, Alonso-Sarduy L, Dietler G, Peraro MD, Cole ST, Pojer F, Mol Microbiol. 2011 Aug 30. doi: 10.1111/j.1365-2958.2011.07813.x. PMID: 21883526

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