4QAC:
reference: Structural basis for cooperative interactions of substituted 2-aminopyrimidines with the acetylcholine binding protein., Kaczanowska K, Harel M, Radic Z, Changeux JP, Finn MG, Taylor P, Proc Natl Acad Sci U S A. 2014 Jul 22;111(29):10749-54. doi:, 10.1073/pnas.1410992111. Epub 2014 Jul 8. PMID: 25006260

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