Photoswitchable Ligand-Gated Ion Channels
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Ligand-activated proteins can be controlled with light by means of synthetic photoisomerizable tethered ligands (PTLs). The application of PTLs to ligand-gated ion channels, including the nicotinic acetylcholine receptor and ionotropic glutamate receptors, is reviewed with emphasis on rational photoswitch design and the mechanisms of optical switching. Recently reported molecular dynamic methods allow simulation with high reliability of novel PTLs for any ligand-activated protein whose structure is known.
