1CRZ:
reference: Structure of the Escherichia coli TolB protein determined by MAD methods at 1.95 A resolution., Abergel C, Bouveret E, Claverie JM, Brown K, Rigal A, Lazdunski C, Benedetti H, Structure Fold Des 1999 Oct 15;7(10):1291-300. PMID: 10545334

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