3BLC:
reference: Crystal Structure of the Major Periplasmic Domain of the Bacterial Membrane Protein Assembly Facilitator YidC., Oliver DC, Paetzel M, J Biol Chem. 2008 Feb 22;283(8):5208-16. Epub 2007 Dec 19. PMID: 18093969

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