3CZ6:
reference: Structural and functional studies of the Rap1 C-terminus reveal novel separation-of-function mutants., Feeser EA, Wolberger C, J Mol Biol. 2008 Jul 11;380(3):520-31. Epub 2008 May 17. PMID: 18538788

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