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==Crystal structure of HLA-DQ0602 in complex with a hypocretin peptide==
==Crystal structure of HLA-DQ0602 in complex with a hypocretin peptide==
<StructureSection load='1uvq' size='340' side='right' caption='[[1uvq]], [[Resolution|resolution]] 1.80&Aring;' scene=''>
<StructureSection load='1uvq' size='340' side='right'caption='[[1uvq]], [[Resolution|resolution]] 1.80&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
<table><tr><td colspan='2'>[[1uvq]] is a 3 chain structure with sequence from [http://en.wikipedia.org/wiki/Human Human]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1UVQ OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1UVQ FirstGlance]. <br>
<table><tr><td colspan='2'>[[1uvq]] is a 3 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1UVQ OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1UVQ FirstGlance]. <br>
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=ACY:ACETIC+ACID'>ACY</scene>, <scene name='pdbligand=BMA:BETA-D-MANNOSE'>BMA</scene>, <scene name='pdbligand=GLY:GLYCINE'>GLY</scene>, <scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene>, <scene name='pdbligand=FUC:ALPHA-L-FUCOSE'>FUC</scene></td></tr>
</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>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1uvq FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1uvq OCA], [http://pdbe.org/1uvq PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1uvq RCSB], [http://www.ebi.ac.uk/pdbsum/1uvq PDBsum]</span></td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ACY:ACETIC+ACID'>ACY</scene>, <scene name='pdbligand=BMA:BETA-D-MANNOSE'>BMA</scene>, <scene name='pdbligand=FUC:ALPHA-L-FUCOSE'>FUC</scene>, <scene name='pdbligand=GLY:GLYCINE'>GLY</scene>, <scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1uvq FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1uvq OCA], [https://pdbe.org/1uvq PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1uvq RCSB], [https://www.ebi.ac.uk/pdbsum/1uvq PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1uvq ProSAT]</span></td></tr>
</table>
</table>
== Disease ==
[[http://www.uniprot.org/uniprot/OREX_HUMAN OREX_HUMAN]] Defects in HCRT are the cause of narcolepsy type 1 (NRCLP1) [MIM:[http://omim.org/entry/161400 161400]]. Narcolepsy is a neurological disabling sleep disorder, characterized by excessive daytime sleepiness, sleep fragmentation, symptoms of abnormal rapid-eye-movement (REM) sleep, such as cataplexy, hypnagogic hallucinations, and sleep paralysis. Cataplexy is a sudden loss of muscle tone triggered by emotions, which is the most valuable clinical feature used to diagnose narcolepsy. Human narcolepsy is primarily a sporadically occurring disorder but familial clustering has been observed. Note=Human narcolepsy is associated with a deficient orexin system. Orexins are absent and/or greatly diminished in the brain and cerebrospinal fluid (CSF) of most narcoleptic patients.<ref>PMID:10973318</ref> 
== Function ==
== Function ==
[[http://www.uniprot.org/uniprot/OREX_HUMAN OREX_HUMAN]] Neuropeptides that play a significant role in the regulation of food intake and sleep-wakefulness, possibly by coordinating the complex behavioral and physiologic responses of these complementary homeostatic functions. A broader role in the homeostatic regulation of energy metabolism, autonomic function, hormonal balance and the regulation of body fluids, is also suggested. Orexin-A binds to both OX1R and OX2R with a high affinity, whereas orexin-B binds only to OX2R with a similar high affinity.
[https://www.uniprot.org/uniprot/E9PMV2_HUMAN E9PMV2_HUMAN]  
== Evolutionary Conservation ==
== Evolutionary Conservation ==
[[Image:Consurf_key_small.gif|200px|right]]
[[Image:Consurf_key_small.gif|200px|right]]
Check<jmol>
Check<jmol>
   <jmolCheckbox>
   <jmolCheckbox>
     <scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/uv/1uvq_consurf.spt"</scriptWhenChecked>
     <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/uv/1uvq_consurf.spt"</scriptWhenChecked>
     <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
     <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview03.spt</scriptWhenUnchecked>
     <text>to colour the structure by Evolutionary Conservation</text>
     <text>to colour the structure by Evolutionary Conservation</text>
   </jmolCheckbox>
   </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/chain_selection.php?pdb_ID=2ata ConSurf].
</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=1uvq ConSurf].
<div style="clear:both"></div>
<div style="clear:both"></div>
<div style="background-color:#fffaf0;">
<div style="background-color:#fffaf0;">
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==See Also==
==See Also==
*[[Major histocompatibility complex|Major histocompatibility complex]]
*[[MHC 3D structures|MHC 3D structures]]
*[[MHC II 3D structures|MHC II 3D structures]]
*[[Orexin and Orexin receptor|Orexin and Orexin receptor]]
== References ==
== References ==
<references/>
<references/>
__TOC__
__TOC__
</StructureSection>
</StructureSection>
[[Category: Human]]
[[Category: Homo sapiens]]
[[Category: Bell, J I]]
[[Category: Large Structures]]
[[Category: Esnouf, R E]]
[[Category: Bell JI]]
[[Category: Fugger, L]]
[[Category: Esnouf RE]]
[[Category: Hansen, B E]]
[[Category: Fugger L]]
[[Category: Harlos, K]]
[[Category: Hansen BE]]
[[Category: Jones, E Y]]
[[Category: Harlos K]]
[[Category: Siebold, C]]
[[Category: Jones EY]]
[[Category: Strominger, J L]]
[[Category: Siebold C]]
[[Category: Svejgaard, A]]
[[Category: Strominger JL]]
[[Category: Wyer, J R]]
[[Category: Svejgaard A]]
[[Category: Autoimmune disease]]
[[Category: Wyer JR]]
[[Category: Diabetes]]
[[Category: Immune system]]
[[Category: Immunology]]
[[Category: Mhc class ii]]
[[Category: Narcolepsy]]
[[Category: Spine]]
[[Category: Structural genomic]]
[[Category: Structural proteomics in europe]]
Retrieved from "https://proteopedia.org/1uvq"