Sandbox Reserved 1701: Difference between revisions
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GPCRs undergo a conformational change in their 7TMD region upon ligand binding. This signal is then transduced to the G-protein allowing for downstream responses due to <scene name='90/904306/Interface_2/1'>interactions</scene> between the alpha subunit of the G-protein and the transmembrane protein which activates g-protein by GTP exchange. | GPCRs undergo a conformational change in their 7TMD region upon ligand binding. This signal is then transduced to the G-protein allowing for downstream responses due to <scene name='90/904306/Interface_2/1'>interactions</scene> between the alpha subunit of the G-protein and the transmembrane protein which activates g-protein by GTP exchange. | ||
=== Before Activation === | === Before Activation === | ||
The culmination of different motifs observed in MRGPRX2 compared to other class A GPCRs leads to external membrane ligand binding. The MRGPRX2 GPCR undergoes a much smaller conformational change upon ligand binding compared to other Class A GPCRs due to surface level binding versus deep helix binding (''' | The culmination of different motifs observed in MRGPRX2 compared to other class A GPCRs leads to external membrane ligand binding. The MRGPRX2 GPCR undergoes a much smaller conformational change upon ligand binding compared to other Class A GPCRs due to surface level binding versus deep helix binding ('''Figure 10'''). | ||
[[Image:Screen Shot 2022-03-282 at 6.59.44 PM.png|500px|center|thumb|'''Figure 10.''' Overlay of unbound (transparent) and bound (opaque) transmembrane proteins of both MRGRPX2 (left) and 5-HT2AR (right).]] | [[Image:Screen Shot 2022-03-282 at 6.59.44 PM.png|500px|center|thumb|'''Figure 10.''' Overlay of unbound (transparent) and bound (opaque) transmembrane proteins of both MRGRPX2 (left) and 5-HT2AR (right).]] | ||
