...chemogenetic receptors were based on G-protein coupled receptors, or GPCRs. The largest class of cell ...chemogenetic tools. Need a refresher on G-protein coupled receptors? Read the GPCRs: How Do They Work and...like RASSLs, are based on engineered G-protein coupled receptors, but unlike RASSLs, show insensitivity...classified by the signaling protein that the receptors couple to: Gq-DREADDs signal through the Gαq/11 G-protein...is not widely used. There is also a DREADD that couples to β-arrestin to activate noncanonical GPCR signaling...For a discussion of alternative DREADD ligands, please see the text. Browse Addgene's collection of DREADD...allowed them to respond to their cognate PSEM. For example, PSAM Q79G,Q139G is activated by PSEM 22S , while...