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Unstructured loop is essential for the activation of mGluR2
Deo R Singh1, Ashish K Mishra2, Pankaj Pandey3
1Department of Biochemistry, Weill Cornell Medical College, New York City, NY, USA; Department of Cell and Molecular Physiology, Stritch School of Medicine, Maywood, IL, USA.
Biochemical and Biophysical Research Communications
|November 11, 2019
Summary
The unstructured loop in metabotropic glutamate receptors (mGluRs) is crucial for glutamate-induced activation. This study reveals the BC loop
Area of Science:
- Neuroscience
- Molecular Biology
- Biochemistry
Background:
- Metabotropic Glutamate Receptors (mGluRs) are Class C G-protein coupled receptors (GPCRs) vital in the central nervous system.
- mGluRs are implicated in various neurological and psychiatric disorders.
- Previous research primarily focused on glutamate-induced activation of mGluR2, leaving the role of the BC loop unexplored.
Purpose of the Study:
- To investigate the function of the unstructured loop, also known as the BC loop, in the activation of metabotropic glutamate receptors.
- To determine if the BC loop is essential for glutamate-induced conformational changes and subsequent receptor activation.
Main Methods:
- Utilized a Förster Resonance Energy Transfer (FRET) based assay.
- Conducted experiments in live cells to observe receptor behavior.
Main Results:
- Demonstrated that the unstructured loop is indispensable for glutamate-induced conformational changes in metabotropic glutamate receptors.
- Confirmed that the BC loop is required for the activation of these receptors.
Conclusions:
- The unstructured BC loop plays a critical role in the activation mechanism of metabotropic glutamate receptors.
- Findings provide new insights into the molecular underpinnings of mGluR function and activation pathways.
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