The GLIC receptor is a bacterial (Gloeobacter) Ligand-gated Ion Channel, homolog to the nicotinic acetylcholine receptors. It is a proton-gated, cation-selective channel, and like the nicotinic acetylcholine receptors is a functional pentameric oligomer. However while its eukaryotic homologues are hetero-oligomeric, all until now known bactria kno...