1207748-36-4Relevant articles and documents
A Photoswitchable Dualsteric Ligand Controlling Receptor Efficacy
Agnetta, Luca,Kauk, Michael,Canizal, Maria Consuelo Alonso,Messerer, Regina,Holzgrabe, Ulrike,Hoffmann, Carsten,Decker, Michael
, p. 7282 - 7287 (2017)
The investigation of the mode and time course of the activation of G-protein-coupled receptors (GPCRs), in particular muscarinic acetylcholine (mACh or M) receptors, is still in its infancy despite the tremendous therapeutic relevance of M receptors and GPCRs in general. We herein made use of a dualsteric ligand that can concomitantly interact with the orthosteric, that is, the neurotransmitter, binding site and an allosteric one. We synthetically incorporated a photoswitchable (photochromic) azobenzene moiety. We characterized the photophysical properties of this ligand called BQCAAI and investigated its applicability as a pharmacological tool compound with a set of FRET techniques at the M1 receptor. BQCAAI proved to be an unprecedented molecular tool; it is the first photoswitchable dualsteric ligand, and its activity can be regulated by light. We also applied BQCCAI to investigate the time course of several receptor activation processes.