4CZM:
reference: Bacterial actin MreB forms antiparallel double filaments., Van den Ent F, Izore T, Bharat TA, Johnson CM, Lowe J, Elife. 2014 May 2:e02634. doi: 10.7554/eLife.02634. PMID: 24843005

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