2O7L:
reference: Open-cap conformation of intramembrane protease GlpG., Wang Y, Ha Y, Proc Natl Acad Sci U S A. 2007 Feb 13;104(7):2098-102. Epub 2007 Feb 2. PMID: 17277078

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