3L8Y:
reference: Stabilizing a weak binding state for effectors in the human ras protein by cyclen complexes., Rosnizeck IC, Graf T, Spoerner M, Trankle J, Filchtinski D, Herrmann C, Gremer L, Vetter IR, Wittinghofer A, Konig B, Kalbitzer HR, Angew Chem Int Ed Engl. 2010 May 17;49(22):3830-3. PMID: 20401883

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