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== Human metabotropic glutamate receptor 5 transmembrane domain ==
== Human metabotropic glutamate receptor 5 transmembrane domain ==
<StructureSection load='4oo9' size='300' frame='true' side='right' caption='Human metabotropic glutamate receptor 5 transmembrane domain' scene='72/721531/Protien_clean_sce/1'>
<StructureSection load='4oo9' size='300' frame='true' side='right' caption='Human metabotropic glutamate receptor 5 transmembrane domain' scene='72/721531/Protien_clean_sce/1'>
Receiving and responding to extracellular messages is critical to the proper function of the nervous system. Glutamate is the major excitory neurotransmitter of the CNS, and metabotropic glutamate receptor 5 will play a major role in glutamate signaling. Metabotropic glutamate receptor 5 transmembrane domain is a homodimeric GPCR that resides in the cellular membrane <ref name="Dore" />. This domain is a member of the Class C GPCR family and can further be categorized into the Group I subgroup. The transmembrane domain will signal through a Gq/11 pathway. mGlu5 will bind glutamate to the extracellular Venus flytrap domain and the signal will be transduced across the membrane to a heterotrimeric G protein, which will ultimately lead to calcium release and activation of PKC. This will elicit a excitory post-synaptic repose and modulate long term potentiation. Human metabotropic glutamate receptor 5 is found throughout the central nervous system. Areas containing high concentrations of this protein are often involved involved in emotions and higher cognition<ref name="Wu" />. The localization of mGlu5 in the CNS and the presence of multiple domains makes mGlu5 a possible target for treating schizophrenia, Fragile X, depression, anxiety,and Alzheimer's disease<ref name="Wu" />.  
Receiving and responding to extracellular messages is critical to the proper function of the nervous system. Glutamate is the major excitory neurotransmitter of the CNS, and metabotropic glutamate receptor 5 will play a major role in glutamate signaling. Metabotropic glutamate receptor 5 transmembrane domain is a homodimeric GPCR that resides in the cellular membrane <ref name="Dore" />. This domain is a member of the Class C GPCR family and can further be categorized into the Group I subgroup. The transmembrane domain will signal through a Gq/11 pathway. mGlu5 will bind glutamate to the extracellular Venus flytrap domain and the signal will be transduced across the membrane to a heterotrimeric G protein, which will ultimately lead to calcium release and activation of PKC. This will elicit a excitory post-synaptic repose and modulate long term potentiation. Human metabotropic glutamate receptor 5 is found throughout the central nervous system. Areas containing high concentrations of this protein are often involved involved in emotions and higher cognition<ref name="Niswender" />. The localization of mGlu5 in the CNS and the presence of multiple domains makes mGlu5 a possible target for treating schizophrenia, Fragile X, depression, anxiety,and Alzheimer's disease<ref name="Wu" />.  


== Discovery ==
== Discovery ==
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=== Fragile X ===  
=== Fragile X ===  


One positive characteristic of ligands that target the TMD is they tend to be more specific, thus interacting less with brain proteins<ref name="Feng" />.
However, modulators of mGlu5 TMD continue to be studied in treating Parkinson's, Alzheimer's disease, and various addictions<ref name="Niswender" />. 
=== Parkinsons ===
=== Parkinsons ===
== Relevance ==
== Relevance ==
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<ref name="Dore">PMID: 25042998</ref>
<ref name="Dore">PMID: 25042998</ref>
<ref name="Wu">PMID: 24603153</ref>
<ref name="Wu">PMID: 24603153</ref>
<ref name="Niswender">PMID: 20055706</ref>
<ref name="Feng">PMID: 4406965</ref>
<ref name="Dore">PMID: 25042998</ref>
<references/>
<references/>
== External Resources ==
== External Resources ==