6AU6:
reference: Disease-Causing Mutations in the G Protein Galphas Subvert the Roles of GDP and GTP., Hu Q, Shokat KM, Cell. 2018 Apr 1. pii: S0092-8674(18)30298-8. doi: 10.1016/j.cell.2018.03.018. PMID: 29628140

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