2A5D:
reference: Structural basis for the activation of cholera toxin by human ARF6-GTP., O'Neal CJ, Jobling MG, Holmes RK, Hol WG, Science. 2005 Aug 12;309(5737):1093-6. PMID: 16099990

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