5OFR:
reference: Structural basis for antibacterial peptide self-immunity by the bacterial ABC transporter McjD., Bountra K, Hagelueken G, Choudhury HG, Corradi V, El Omari K, Wagner A, Mathavan I, Zirah S, Yuan Wahlgren W, Tieleman DP, Schiemann O, Rebuffat S, Beis K, EMBO J. 2017 Oct 16;36(20):3062-3079. doi: 10.15252/embj.201797278. Epub 2017 Sep, 1. PMID: 28864543

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