Sandbox Reserved 1701: Difference between revisions

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== Function ==

[[Image:Screen Shot 2022-04-162 at 2.49.26 PM.png|420px|right|thumb|'''Figure 8.'''Schematic representation of cellular response]]

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. This downstream response may be in the form of release of small granules which can be received by a receptor to initiate a [https://proteopedia.org/wiki/index.php/Neurotransmitters#Serotonin_receptors%20Serotonin%20receptors pathological response] (figure 8)<ref name="Porebski">PMID: 30619367</ref>.

=== 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 ('''Figure 9''').

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 9'''). This smaller change can be seen as only minor extracellular movement occurs in MRGRPX2 upon binding compared to other GPCRs which can undergo loop and helical conformational changes<ref name="Hoffmann">PMID: 18059316</ref>.

Sandbox Reserved 1701: Difference between revisions

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@@ Line 97: / Line 97: @@
 == Function ==
 [[Image:Screen Shot 2022-04-162 at 2.49.26 PM.png|420px|right|thumb|'''Figure 8.'''Schematic representation of cellular response]]
-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. This downstream response may be in the form of release of small granules which can be received by a receptor to initiate a [https://proteopedia.org/wiki/index.php/Neurotransmitters#Serotonin_receptors%20Serotonin%20receptors pathological response] (figure 8)<ref name="Porebski">PMID: 30619367</ref>.
 === 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 ('''Figure 9''').
+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 9'''). This smaller change can be seen as only minor extracellular movement occurs in MRGRPX2 upon binding compared to other GPCRs which can undergo loop and helical conformational changes<ref name="Hoffmann">PMID: 18059316</ref>.