3EZ6:
reference: Structural basis for ADP-mediated transcriptional regulation by P1 and P7 ParA., Dunham TD, Xu W, Funnell BE, Schumacher MA, EMBO J. 2009 Jun 17;28(12):1792-802. Epub 2009 May 21. PMID: 19461582

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