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[[Image:1kjw.jpg|left|200px]]


{{Structure
==SH3-Guanylate Kinase Module from PSD-95==
|PDB= 1kjw |SIZE=350|CAPTION= <scene name='initialview01'>1kjw</scene>, resolution 1.8&Aring;
<StructureSection load='1kjw' size='340' side='right'caption='[[1kjw]], [[Resolution|resolution]] 1.80&Aring;' scene=''>
|SITE=  
== Structural highlights ==
|LIGAND= <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene>
<table><tr><td colspan='2'>[[1kjw]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Rattus_norvegicus Rattus norvegicus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1KJW OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1KJW FirstGlance]. <br>
|ACTIVITY=  
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.8&#8491;</td></tr>
|GENE=  
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr>
|DOMAIN=
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1kjw FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1kjw OCA], [https://pdbe.org/1kjw PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1kjw RCSB], [https://www.ebi.ac.uk/pdbsum/1kjw PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1kjw ProSAT]</span></td></tr>
|RELATEDENTRY=
</table>
|RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1kjw FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1kjw OCA], [http://www.ebi.ac.uk/pdbsum/1kjw PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=1kjw RCSB]</span>
== Function ==
}}
[https://www.uniprot.org/uniprot/DLG4_RAT DLG4_RAT] Interacts with the cytoplasmic tail of NMDA receptor subunits and shaker-type potassium channels. Required for synaptic plasticity associated with NMDA receptor signaling. Overexpression or depletion of DLG4 changes the ratio of excitatory to inhibitory synapses in hippocampal neurons. May reduce the amplitude of ASIC3 acid-evoked currents by retaining the channel intracellularly. May regulate the intracellular trafficking of ADR1B.<ref>PMID:15317815</ref> <ref>PMID:15358863</ref>
== Evolutionary Conservation ==
[[Image:Consurf_key_small.gif|200px|right]]
Check<jmol>
  <jmolCheckbox>
    <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/kj/1kjw_consurf.spt"</scriptWhenChecked>
    <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
    <text>to colour the structure by Evolutionary Conservation</text>
  </jmolCheckbox>
</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=1kjw ConSurf].
<div style="clear:both"></div>


'''SH3-Guanylate Kinase Module from PSD-95'''
==See Also==
 
*[[Postsynaptic density protein 3D structures|Postsynaptic density protein 3D structures]]
 
== References ==
==Overview==
<references/>
Membrane-associated guanylate kinases (MAGUKs), such as PSD-95, are modular scaffolds that organize signaling complexes at synapses and other cell junctions. MAGUKs contain PDZ domains, which recruit signaling proteins, as well as a Src homology 3 (SH3) and a guanylate kinase-like (GK) domain, implicated in scaffold oligomerization. The crystal structure of the SH3-GK module from PSD-95 reveals that these domains form an integrated unit: the SH3 fold comprises noncontiguous sequence elements divided by a hinge region and the GK domain. These elements compose two subdomains that can assemble in either an intra- or intermolecular fashion to complete the SH3 fold. We propose a model for MAGUK oligomerization in which complementary SH3 subdomains associate by 3D domain swapping. This model provides a possible mechanism for ligand regulation of oligomerization.
__TOC__
 
</StructureSection>
==About this Structure==
[[Category: Large Structures]]
1KJW is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Rattus_norvegicus Rattus norvegicus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1KJW OCA].
 
==Reference==
Structure of the SH3-guanylate kinase module from PSD-95 suggests a mechanism for regulated assembly of MAGUK scaffolding proteins., McGee AW, Dakoji SR, Olsen O, Bredt DS, Lim WA, Prehoda KE, Mol Cell. 2001 Dec;8(6):1291-301. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/11779504 11779504]
[[Category: Rattus norvegicus]]
[[Category: Rattus norvegicus]]
[[Category: Single protein]]
[[Category: Bredt DS]]
[[Category: Bredt, D S.]]
[[Category: Dakoji SR]]
[[Category: Dakoji, S R.]]
[[Category: Lim WA]]
[[Category: Lim, W A.]]
[[Category: McGee AW]]
[[Category: McGee, A W.]]
[[Category: Olsen O]]
[[Category: Olsen, O.]]
[[Category: Prehoda KE]]
[[Category: Prehoda, K E.]]
[[Category: protein-protein interaction]]
[[Category: scaffold]]
 
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