Structural and Biophysical Mechanisms of Class C G Protein-Coupled Receptor Function.

ABSTRACT: Groundbreaking structural and spectroscopic studies of class A G protein-coupled receptors (GPCRs), such as rhodopsin and the β₂ adrenergic receptor, have provided a picture of how structural rearrangements between transmembrane helices control ligand binding, receptor activation, and effector coupling. However, the activation mechanism of other GPCR classes remains more elusive, in large part due to complexity in their domain assembly and quaternary structure. In this review, we focus on the class C GPCRs, which include metabotropic glutamate receptors (mGluRs) and gamma-aminobutyric acid B (GABA_B) receptors (GABA_BRs) most prominently. We discuss the unique biophysical questions raised by the presence of large extracellular ligand-binding domains (LBDs) an

SUBMITTER: Ellaithy A 

PROVIDER: S-EPMC7642020 | biostudies-literature | 2020 Dec

REPOSITORIES: biostudies-literature