4XSH:
reference: Rho GTPase Recognition by C3 Exoenzyme Based on C3-RhoA Complex Structure., Toda A, Tsurumura T, Yoshida T, Tsumori Y, Tsuge H, J Biol Chem. 2015 Jun 11. pii: jbc.M115.653220. PMID: 26067270

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