2YN6:
reference: Inhibition of the Prokaryotic Pentameric Ligand-Gated Ion Channel ELIC by Divalent Cations., Zimmermann I, Marabelli A, Bertozzi C, Sivilotti LG, Dutzler R, PLoS Biol. 2012 Nov;10(11):e1001429. doi: 10.1371/journal.pbio.1001429. Epub 2012, Nov 20. PMID: 23185134

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