2BG9: Refined Structure Of The Nicotinic Acetylcholine Receptor At Resolution.
reference: Refined structure of the nicotinic acetylcholine receptor at 4A resolution., Unwin N, J Mol Biol. 2005 Mar 4;346(4):967-89. Epub 2005 Jan 25. PMID: 15701510

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