View source for 1ogt

==CRYSTAL STRUCTURE OF HLA-B*2705 COMPLEXED WITH THE VASOACTIVE INTESTINAL PEPTIDE TYPE 1 RECEPTOR (VIPR) PEPTIDE (RESIDUES 400-408)==
<StructureSection load='1ogt' size='340' side='right' caption='[[1ogt]], [[Resolution|resolution]] 1.47&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[1ogt]] is a 3 chain structure with sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1OGT OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1OGT FirstGlance]. <br>
</td></tr><tr><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=MN:MANGANESE+(II)+ION'>MN</scene><br>
<tr><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1a1m|1a1m]], [[1a1n|1a1n]], [[1a1o|1a1o]], [[1a6z|1a6z]], [[1a9b|1a9b]], [[1a9e|1a9e]], [[1agb|1agb]], [[1agc|1agc]], [[1agd|1agd]], [[1age|1age]], [[1agf|1agf]], [[1akj|1akj]], [[1ao7|1ao7]], [[1ce6|1ce6]], [[1de4|1de4]], [[1e27|1e27]], [[1e28|1e28]], [[1efx|1efx]], [[1exu|1exu]], [[1gzp|1gzp]], [[1gzq|1gzq]], [[1hhg|1hhg]], [[1hhh|1hhh]], [[1hhi|1hhi]], [[1hhj|1hhj]], [[1hhk|1hhk]], [[1hla|1hla]], [[1hsa|1hsa]], [[1hsb|1hsb]], [[1i4f|1i4f]], [[1i7r|1i7r]], [[1i7t|1i7t]], [[1i7u|1i7u]], [[1im3|1im3]], [[1im9|1im9]], [[1jf1|1jf1]], [[1jge|1jge]], [[1jht|1jht]], [[1jnj|1jnj]], [[1k5n|1k5n]], [[1kpr|1kpr]], [[1ktl|1ktl]], [[1lds|1lds]], [[1mi5|1mi5]], [[1of2|1of2]], [[1oga|1oga]], [[1qlf|1qlf]], [[1qqd|1qqd]], [[1tmc|1tmc]], [[2clr|2clr]], [[2hla|2hla]], [[3hla|3hla]]</td></tr>
<tr><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1ogt FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1ogt OCA], [http://www.rcsb.org/pdb/explore.do?structureId=1ogt RCSB], [http://www.ebi.ac.uk/pdbsum/1ogt PDBsum]</span></td></tr>
<table>
== 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/og/1ogt_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/chain_selection.php?pdb_ID=2ata ConSurf].
<div style="clear:both"></div>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
The products of the human leukocyte antigen subtypes HLA-B*2705 and HLA-B*2709 differ only in residue 116 (Asp vs. His) within the peptide binding groove but are differentially associated with the autoimmune disease ankylosing spondylitis (AS); HLA-B*2705 occurs in AS-patients, whereas HLA-B*2709 does not. The subtypes also generate differential T cell repertoires as exemplified by distinct T cell responses against the self-peptide pVIPR (RRKWRRWHL). The crystal structures described here show that pVIPR binds in an unprecedented dual conformation only to HLA-B*2705 molecules. In one binding mode, peptide pArg5 forms a salt bridge to Asp116, connected with drastically different interactions between peptide and heavy chain, contrasting with the second, conventional conformation, which is exclusively found in the case of B*2709. These subtype-dependent differences in pVIPR binding link the emergence of dissimilar T cell repertoires in individuals with HLA-B*2705 or HLA-B*2709 to the buried Asp116/His116 polymorphism and provide novel insights into peptide presentation by major histocompatibility antigens.

Dual, HLA-B27 subtype-dependent conformation of a self-peptide.,Hulsmeyer M, Fiorillo MT, Bettosini F, Sorrentino R, Saenger W, Ziegler A, Uchanska-Ziegler B J Exp Med. 2004 Jan 19;199(2):271-81. PMID:14734527<ref>PMID:14734527</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>

==See Also==
*[[Beta-2 microglobulin|Beta-2 microglobulin]]
*[[Major histocompatibility complex|Major histocompatibility complex]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Homo sapiens]]
[[Category: Bettosini, F.]]
[[Category: Fiorillo, M T.]]
[[Category: Hulsmeyer, M.]]
[[Category: Saenger, W.]]
[[Category: Sorrentino, R.]]
[[Category: Uchanska-Ziegler, B.]]
[[Category: Ziegler, A.]]
[[Category: Hla- b*2705]]
[[Category: Immune system]]
[[Category: Immune system-complex]]