2VAP:
reference: Structural Insights into the Conformational Variability of FtsZ., Oliva MA, Trambaiolo D, Lowe J, J Mol Biol. 2007 Nov 9;373(5):1229-42. Epub 2007 Aug 29. PMID: 17900614

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