Barron, S. ., McLaughlin, J. ., See, J. ., Richards, V. ., & Rosenberg, R. . (2009). An allosteric modulator of alpha7 nicotinic receptors, N-(5-Chloro-2,4-dimethoxyphenyl)-N’-(5-methyl-3-isoxazolyl)-urea (PNU-120596), causes conformational changes in the extracellular ligand binding domain similar to those caused by acetylcholine. Molecular Pharmacology, 76(2), 253-63. https://doi.org/10.1124/mol.109.056226 (Original work published 2009)

McLaughlin, J. ., Barron, S. ., See, J. ., & Rosenberg, R. . (1969). Conformational changes in alpha 7 acetylcholine receptors underlying allosteric modulation by divalent cations. BMC Pharmacology, 9, 1. https://doi.org/10.1186/1471-2210-9-1 (Original work published)