Abstract:G-protein-coupled receptors (GPCRs) such as human muscarinic acetylcholine receptor 3 (hM3) assume dimeric/oligomeric forms in living cells while maintaining their ability to bind and activate G-proteins. The precise stoichiometry, quaternary organization, and stability of these receptor complexes in living cells remain a subject of significant controversy. We have investigated the organization of hM3 receptors in living cells using spectrally resolved two photon microscopy (SR-TPM). Wild type hM3 and a synthe… Show more
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