| 4BQT: reference: Structural Characterization of Binding Mode of Smoking Cessation Drugs to Nicotinic Acetylcholine Receptors through Study of Ligand Complexes with Acetylcholine-binding Protein., Rucktooa P, Haseler CA, van Elk R, Smit AB, Gallagher T, Sixma TK, J Biol Chem. 2012 Jul 6;287(28):23283-93. Epub 2012 May 2. PMID: 22553201 |
This OCA 
Structure page
uses Jmol,
developed by the Jmol Development Team
(documentation).