4QL0:
reference: Structure of the membrane protein FhaC: a member of the Omp85-TpsB transporter superfamily., Clantin B, Delattre AS, Rucktooa P, Saint N, Meli AC, Locht C, Jacob-Dubuisson F, Villeret V, Science. 2007 Aug 17;317(5840):957-61. PMID: 17702945

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