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===PAM and NAM Bound Form===
===PAM and NAM Bound Form===
Moving from the intermediate state, a second glutamate will bind in the other VFT. This will help close the VFT and move the CRD closer together <ref name="Seven" />. A positive allosteric modulator (PAM) or a negative allosteric modulator (NAM) will then come in and bind to mGlu2. PAM  and NAM FINISH
Moving from the intermediate state, a second glutamate will bind in the other VFT. This will help close the VFT and move the CRD closer together <ref name="Seven" />. A positive allosteric modulator (PAM) or a negative allosteric modulator (NAM) will then come in and bind to mGlu2. PAM  and NAM FINISH
induce different conformational changes, which result in different outcomes. <scene name='90/904308/Pam/3'>PAM binds</scene> to the receptor, induces conformational changes, which helps to promote greater affinity for G protein binding. PAM binds in a binding pocket that is created by helices III, V, VI, VII in the <scene name='90/904307/Tmd_helices/4'>TMD</scene>. Within helix VI, the hydrophobic binding is composed of W773, F776, L777, and F780. Due to spatial hindrance caused by the binding of PAM, helix VI is shifted downward, causing conformational changes that increase G-protein binding affinity. NAM, however, reduces the affinity for G protein binding. NAM binds to the same binding pocket as PAM and also interacts with residue W773, but NAM occupies the binding site a little deeper than PAM. This causes NAM to push the side chain of W773 towards helix VII<ref name="Lin"/>.  
induce different conformational changes, which result in different outcomes. <scene name='90/904308/Pam/3'>PAM binds</scene> to the receptor, induces conformational changes, which helps to promote greater affinity for G protein binding. PAM binds in a binding pocket that is created by helices III, V, VI, VII in the <scene name='90/904307/Tmd_helices/4'>TMD</scene>. Within helix VI, the hydrophobic binding is composed of W773, F776, L777, and F780. Due to spatial hindrance caused by the binding of PAM, helix VI is shifted downward, causing conformational changes that increase G-protein binding affinity. NAM, however, reduces the affinity for G protein binding. <scene name='90/904308/Nam_bound/2'>NAM binds</scene> to the same binding pocket as PAM and also interacts with residue W773, but NAM occupies the binding site a little deeper than PAM. This causes NAM to push the side chain of W773 towards helix VII<ref name="Lin"/>.  


[[Image:PAM binding pocket correct.png |250px|right|thumb|'''Figure 4.'''PAM binding pocket. PAM, JNJ-40411813, is shown in magenta and colored by atom type, four labelled binding helices (III, V, VI, and VII) create the binding pocket in the 7TM region for PAM binding. PAM binding promotes G-protein activation by mGLu2.]]
[[Image:PAM binding pocket correct.png |250px|right|thumb|'''Figure 4.'''PAM binding pocket. PAM, JNJ-40411813, is shown in magenta and colored by atom type, four labelled binding helices (III, V, VI, and VII) create the binding pocket in the 7TM region for PAM binding. PAM binding promotes G-protein activation by mGLu2.]]