1bz9: Difference between revisions
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==CRYSTAL STRUCTURE OF MURINE CLASS I MHC H2-DB COMPLEXED WITH A SYNTHETIC PEPTIDE P1027== | ==CRYSTAL STRUCTURE OF MURINE CLASS I MHC H2-DB COMPLEXED WITH A SYNTHETIC PEPTIDE P1027== | ||
<StructureSection load='1bz9' size='340' side='right' caption='[[1bz9]], [[Resolution|resolution]] 2.80Å' scene=''> | <StructureSection load='1bz9' size='340' side='right' caption='[[1bz9]], [[Resolution|resolution]] 2.80Å' scene=''> | ||
== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>[[1bz9]] is a 3 chain structure with sequence from [http://en.wikipedia.org/wiki/Lk3_transgenic_mice Lk3 transgenic mice]. This structure supersedes the now removed PDB entry [http://oca.weizmann.ac.il/oca-bin/send-pdb?obs=1&id=1a9d 1a9d]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1BZ9 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1BZ9 FirstGlance]. <br> | <table><tr><td colspan='2'>[[1bz9]] is a 3 chain structure with sequence from [http://en.wikipedia.org/wiki/Lk3_transgenic_mice Lk3 transgenic mice]. This structure supersedes the now removed PDB entry [http://oca.weizmann.ac.il/oca-bin/send-pdb?obs=1&id=1a9d 1a9d]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1BZ9 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1BZ9 FirstGlance]. <br> | ||
</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=1bz9 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1bz9 OCA], [http://pdbe.org/1bz9 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1bz9 RCSB], [http://www.ebi.ac.uk/pdbsum/1bz9 PDBsum]</span></td></tr> | </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=1bz9 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1bz9 OCA], [http://pdbe.org/1bz9 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1bz9 RCSB], [http://www.ebi.ac.uk/pdbsum/1bz9 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1bz9 ProSAT]</span></td></tr> | ||
</table> | </table> | ||
== Function == | == Function == | ||
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</div> | </div> | ||
<div class="pdbe-citations 1bz9" style="background-color:#fffaf0;"></div> | <div class="pdbe-citations 1bz9" style="background-color:#fffaf0;"></div> | ||
== References == | == References == | ||
<references/> | <references/> | ||
Revision as of 11:03, 29 November 2017
CRYSTAL STRUCTURE OF MURINE CLASS I MHC H2-DB COMPLEXED WITH A SYNTHETIC PEPTIDE P1027CRYSTAL STRUCTURE OF MURINE CLASS I MHC H2-DB COMPLEXED WITH A SYNTHETIC PEPTIDE P1027
Structural highlights
Function[HA11_MOUSE] Involved in the presentation of foreign antigens to the immune system. [B2MG_MOUSE] Component of the class I major histocompatibility complex (MHC). Involved in the presentation of peptide antigens to the immune system. Evolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMedThe T cell receptor (TCR), from a xeno-reactive murine cytotoxic T lymphocyte clone AHIII12.2, recognizes murine H-2Db complexed with peptide p1027 (FAPGVFPYM), as well as human HLA-A2.1 complexed with peptide p1049 (ALWGFFPVL). A commonly proposed model (the molecular mimicry model) used to explain TCR cross-reactivity suggests that the molecular surfaces of the recognized complexes are similar in shape, charge, or both, in spite of the primary sequence differences. To examine the mechanism of xeno-reactivity of AHIII12.2, we have determined the crystal structures of A2/p1049 and Db/p1027 to 2.5 A and 2.8 A resolution, respectively. The crystal structures show that the TCR footprint regions of the two class I complexes are significantly different in shape and charge. We propose that rather than simple molecular mimicry, unpredictable arrays of common and differential contacts on the two class I complexes are used for their recognition by the same TCR. Structural evidence of T cell xeno-reactivity in the absence of molecular mimicry.,Zhao R, Loftus DJ, Appella E, Collins EJ J Exp Med. 1999 Jan 18;189(2):359-70. PMID:9892618[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References |
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