4GX2:
reference: Distinct gating mechanisms revealed by the structures of a multi-ligand gated K(+) channel., Kong C, Zeng W, Ye S, Chen L, Sauer DB, Lam Y, Derebe MG, Jiang Y, elife. 2012;1:e00184. doi: 10.7554/eLife.00184. Epub 2012 Dec 13. PMID: 23240087

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