Sandbox Reserved 1715: Difference between revisions

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'''3.''' A second glutamate binds to the other binding pocket of the VFT. Mediated by L639, F643, N735, W773, and F776, a positive allosteric modulator (PAM) also binds within the seven TMD helices of the alpha chain. This closed conformation with an inter-lobe domain of 25 degrees is considered the active conformation. The binding of these ligands allows the CRD to compact and come together. This transformation causes the TMD to form another asymmetric conformation with a TM6-TM6 interface between the chains.
'''3.''' A second glutamate binds to the other binding pocket of the VFT. Mediated by L639, F643, N735, W773, and F776, a positive allosteric modulator (PAM) also binds within the seven TMD helices of the alpha chain. This closed conformation with an inter-lobe domain of 25 degrees is considered the active conformation. The binding of these ligands allows the CRD to compact and come together. This transformation causes the TMD to form another asymmetric conformation with a TM6-TM6 interface between the chains.


'''4.''' The change in the arrangement of the helices allows for intracellular loop 2 (ICL2)  and the C-terminus to be properly ordered to interact with a G protein. While hydrogen bonding is present, this coupling is primarily driven by the hydrophobic interactions in the interface with the ɑ5 helix of the G protein.. This coupling can only occur in the presence of a PAM as the pocket in which the coupling occurs would be completely closed in its absence. [[Image: Protein Interaction with G Protein|400 px|right|thumb|Figure 1. The interaction between an active mGlu and a G-protein ]]
'''4.''' The change in the arrangement of the helices allows for intracellular loop 2 (ICL2)  and the C-terminus to be properly ordered to interact with a G protein. While hydrogen bonding is present, this coupling is primarily driven by the hydrophobic interactions in the interface with the ɑ5 helix of the G protein.. This coupling can only occur in the presence of a PAM as the pocket in which the coupling occurs would be completely closed in its absence. [[Image: Protein Interaction with G Protein.png|400 px|right|thumb|Figure 1. The interaction between an active mGlu and a G-protein ]]


'''5.''' Depending on the type of mGlu present, different signaling cascades will occur within the cell. These cascades are necessary for cellular function and can lead to various diseases.  
'''5.''' Depending on the type of mGlu present, different signaling cascades will occur within the cell. These cascades are necessary for cellular function and can lead to various diseases.