2I0C:
reference: Conformational restriction blocks glutamate receptor desensitization., Weston MC, Schuck P, Ghosal A, Rosenmund C, Mayer ML, Nat Struct Mol Biol. 2006 Dec;13(12):1120-7. Epub 2006 Nov 19. PMID: 17115050

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