期刊
SCIENCE ADVANCES
卷 7, 期 22, 页码 -出版社
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/sciadv.abg3362
关键词
-
资金
- National Institute of General Medical Sciences [R35 GM127086]
GABA(B) receptors play a crucial role in inhibitory neurotransmission in the brain, modulating neuronal signaling and being linked to various neurological disorders. Recent cryo-EM studies have provided detailed insights into the activation mechanism of GABA(B) receptors, offering potential for the discovery of new therapeutic drugs and neuromodulators. The structures of the receptor in different conformational states and bound to various ligands contribute to a comprehensive understanding of the receptor's activation process.
Metabotropic.-aminobutyric acid G protein-coupled receptors (GABA(B)) represent one of the two main types of inhibitory neurotransmitter receptors in the brain. These receptors act both pre- and postsynaptically by modulating the transmission of neuronal signals and are involved in a range of neurological diseases, from alcohol addiction to epilepsy. A series of recent cryo-EM studies revealed critical details of the activation mechanism of GABA(B). Structures are now available for the receptor bound to ligands with different modes of action, including antagonists, agonists, and positive allosteric modulators, and captured in different conformational states from the inactive apo to the fully active state bound to a G protein. These discoveries provide comprehensive insights into the activation of the GABA(B) receptor, which not only broaden our understanding of its structure, pharmacology, and physiological effects but also will ultimately facilitate the discovery of new therapeutic drugs and neuromodulators.
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