5F5J:
reference: Crystal Structures and Inhibition Kinetics Reveal a Two-Stage Catalytic Mechanism with Drug Design Implications for Rhomboid Proteolysis., Cho S, Dickey SW, Urban S, Mol Cell. 2016 Feb 4;61(3):329-40. doi: 10.1016/j.molcel.2015.12.022. Epub 2016, Jan 21. PMID: 26805573

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