4ZZC:
reference: Structural Basis for Xenon Inhibition in a Cationic Pentameric Ligand-Gated Ion Channel., Sauguet L, Fourati Z, Prange T, Delarue M, Colloc'h N, PLoS One. 2016 Feb 24;11(2):e0149795. doi: 10.1371/journal.pone.0149795., eCollection 2016. PMID: 26910105

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