3BRW:
reference: The Rap-RapGAP complex: GTP hydrolysis without catalytic glutamine and arginine residues., Scrima A, Thomas C, Deaconescu D, Wittinghofer A, EMBO J. 2008 Feb 28;. PMID: 18309292

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