1ed3: Difference between revisions

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[[Image:1ed3.gif|left|200px]]


{{Structure
==CRYSTAL STRUCTURE OF RAT MINOR HISTOCOMPATIBILITY ANTIGEN COMPLEX RT1-AA/MTF-E.==
|PDB= 1ed3 |SIZE=350|CAPTION= <scene name='initialview01'>1ed3</scene>, resolution 2.55&Aring;
<StructureSection load='1ed3' size='340' side='right'caption='[[1ed3]], [[Resolution|resolution]] 2.55&Aring;' scene=''>
|SITE=  
== Structural highlights ==
|LIGAND=  
<table><tr><td colspan='2'>[[1ed3]] is a 6 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=1ED3 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1ED3 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]] 2.55&#8491;</td></tr>
|GENE=  
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1ed3 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1ed3 OCA], [https://pdbe.org/1ed3 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1ed3 RCSB], [https://www.ebi.ac.uk/pdbsum/1ed3 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1ed3 ProSAT]</span></td></tr>
|DOMAIN=
</table>
|RELATEDENTRY=
== Function ==
|RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1ed3 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1ed3 OCA], [http://www.ebi.ac.uk/pdbsum/1ed3 PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=1ed3 RCSB]</span>
[https://www.uniprot.org/uniprot/HA12_RAT HA12_RAT] Involved in the presentation of foreign antigens to the immune system.
}}
== 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/ed/1ed3_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=1ed3 ConSurf].
<div style="clear:both"></div>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
The rat MHC class Ia molecule RT1-Aa has the unusual capacity to bind long peptides ending in arginine, such as MTF-E, a thirteen-residue, maternally transmitted minor histocompatibility antigen. The antigenic structure of MTF-E was unpredictable due to its extraordinary length and two arginines that could serve as potential anchor residues. The crystal structure of RT1-Aa-MTF-E at 2.55 A shows that both peptide termini are anchored, as in other class I molecules, but the central residues in two independent pMHC complexes adopt completely different bulged conformations based on local environment. The MTF-E epitope is fully exposed within the putative T cell receptor (TCR) footprint. The flexibility demonstrated by the MTF-E structures illustrates how different TCRs may be raised against chemically identical, but structurally dissimilar, pMHC complexes.


'''CRYSTAL STRUCTURE OF RAT MINOR HISTOCOMPATIBILITY ANTIGEN COMPLEX RT1-AA/MTF-E.'''
Two different, highly exposed, bulged structures for an unusually long peptide bound to rat MHC class I RT1-Aa.,Speir JA, Stevens J, Joly E, Butcher GW, Wilson IA Immunity. 2001 Jan;14(1):81-92. PMID:11163232<ref>PMID:11163232</ref>


From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 1ed3" style="background-color:#fffaf0;"></div>


==Overview==
==See Also==
The rat MHC class Ia molecule RT1-Aa has the unusual capacity to bind long peptides ending in arginine, such as MTF-E, a thirteen-residue, maternally transmitted minor histocompatibility antigen. The antigenic structure of MTF-E was unpredictable due to its extraordinary length and two arginines that could serve as potential anchor residues. The crystal structure of RT1-Aa-MTF-E at 2.55 A shows that both peptide termini are anchored, as in other class I molecules, but the central residues in two independent pMHC complexes adopt completely different bulged conformations based on local environment. The MTF-E epitope is fully exposed within the putative T cell receptor (TCR) footprint. The flexibility demonstrated by the MTF-E structures illustrates how different TCRs may be raised against chemically identical, but structurally dissimilar, pMHC complexes.
*[[Beta-2 microglobulin 3D structures|Beta-2 microglobulin 3D structures]]
 
*[[MHC 3D structures|MHC 3D structures]]
==About this Structure==
*[[MHC I 3D structures|MHC I 3D structures]]
1ED3 is a [[Protein complex]] structure of sequences 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=1ED3 OCA].
== References ==
 
<references/>
==Reference==
__TOC__
Two different, highly exposed, bulged structures for an unusually long peptide bound to rat MHC class I RT1-Aa., Speir JA, Stevens J, Joly E, Butcher GW, Wilson IA, Immunity. 2001 Jan;14(1):81-92. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/11163232 11163232]
</StructureSection>
[[Category: Protein complex]]
[[Category: Large Structures]]
[[Category: Rattus norvegicus]]
[[Category: Rattus norvegicus]]
[[Category: Butcher, G W.]]
[[Category: Butcher GW]]
[[Category: Joly, E.]]
[[Category: Joly E]]
[[Category: Speir, J A.]]
[[Category: Speir JA]]
[[Category: Stevens, J.]]
[[Category: Stevens J]]
[[Category: Wilson, I A.]]
[[Category: Wilson IA]]
[[Category: cell surface receptor]]
[[Category: cellular immunity]]
[[Category: immunology]]
[[Category: major histocompatibility complex]]
[[Category: mhc]]
[[Category: peptide antigen presentation]]
[[Category: rat minor histocompatibility complex]]
[[Category: t cell receptor ligand]]
 
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