2PH9:
reference: Galanthamine and non-competitive inhibitor binding to ACh-binding protein: evidence for a binding site on non-alpha-subunit interfaces of heteromeric neuronal nicotinic receptors., Hansen SB, Taylor P, J Mol Biol. 2007 Jun 15;369(4):895-901. Epub 2007 Mar 31. PMID: 17481657

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