4GMQ:
reference: Structural characterization of a eukaryotic chaperone-the ribosome-associated complex., Leidig C, Bange G, Kopp J, Amlacher S, Aravind A, Wickles S, Witte G, Hurt E, Beckmann R, Sinning I, Nat Struct Mol Biol. 2012 Dec 2. doi: 10.1038/nsmb.2447. PMID: 23202586

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