1rpq

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{{STRUCTURE_1rpq| PDB=1rpq | SCENE= }}
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==High Affinity IgE Receptor (alpha chain) Complexed with Tight-Binding E131 'zeta' Peptide from Phage Display==
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===High Affinity IgE Receptor (alpha chain) Complexed with Tight-Binding E131 'zeta' Peptide from Phage Display===
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<StructureSection load='1rpq' size='340' side='right' caption='[[1rpq]], [[Resolution|resolution]] 3.00&Aring;' scene=''>
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{{ABSTRACT_PUBMED_15242605}}
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== Structural highlights ==
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<table><tr><td colspan='2'>[[1rpq]] is a 8 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=1RPQ OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1RPQ FirstGlance]. <br>
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</td></tr><tr><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=BMA:BETA-D-MANNOSE'>BMA</scene>, <scene name='pdbligand=CIT:CITRIC+ACID'>CIT</scene>, <scene name='pdbligand=NDG:2-(ACETYLAMINO)-2-DEOXY-A-D-GLUCOPYRANOSE'>NDG</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene>, <scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene><br>
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<tr><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1kco|1kco]], [[1f2q|1f2q]], [[1f6a|1f6a]]</td></tr>
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<tr><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">FCER1A, FCE1A ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 Homo sapiens])</td></tr>
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<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=1rpq FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1rpq OCA], [http://www.rcsb.org/pdb/explore.do?structureId=1rpq RCSB], [http://www.ebi.ac.uk/pdbsum/1rpq PDBsum]</span></td></tr>
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<table>
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== Evolutionary Conservation ==
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[[Image:Consurf_key_small.gif|200px|right]]
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Check<jmol>
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<jmolCheckbox>
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<scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/rp/1rpq_consurf.spt"</scriptWhenChecked>
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<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
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<text>to colour the structure by Evolutionary Conservation</text>
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</jmolCheckbox>
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</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].
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<div style="clear:both"></div>
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<div style="background-color:#fffaf0;">
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== Publication Abstract from PubMed ==
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Two structurally distinct classes of peptides were recently identified by phage display that bind the high-affinity IgE receptor, FcepsilonRI, and block IgE binding and subsequent receptor activation. Both classes adopt highly stable structures in solution, one forming a beta hairpin, with the other forming a helical "zeta" structure. Despite these differences, the two classes bind competitively to the same site on the receptor. Structural analyses of both peptide-receptor complexes by NMR spectroscopy and/or X-ray crystallography reveal that the unrelated peptide scaffolds have nevertheless converged to present a similar three-dimensional surface to interact with FcepsilonRI and that their modes of interaction share a key feature of the IgE-FcepsilonRI complex, the proline/tryptophan sandwich.
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==Function==
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Convergent recognition of the IgE binding site on the high-affinity IgE receptor.,Stamos J, Eigenbrot C, Nakamura GR, Reynolds ME, Yin J, Lowman HB, Fairbrother WJ, Starovasnik MA Structure. 2004 Jul;12(7):1289-301. PMID:15242605<ref>PMID:15242605</ref>
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[[http://www.uniprot.org/uniprot/FCERA_HUMAN FCERA_HUMAN]] Binds to the Fc region of immunoglobulins epsilon. High affinity receptor. Responsible for initiating the allergic response. Binding of allergen to receptor-bound IgE leads to cell activation and the release of mediators (such as histamine) responsible for the manifestations of allergy. The same receptor also induces the secretion of important lymphokines.
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==About this Structure==
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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[[1rpq]] is a 8 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=1RPQ OCA].
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</div>
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== References ==
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==Reference==
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<references/>
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<ref group="xtra">PMID:015242605</ref><references group="xtra"/><references/>
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__TOC__
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</StructureSection>
[[Category: Homo sapiens]]
[[Category: Homo sapiens]]
[[Category: Eigenbrot, C.]]
[[Category: Eigenbrot, C.]]

Revision as of 11:14, 3 October 2014

High Affinity IgE Receptor (alpha chain) Complexed with Tight-Binding E131 'zeta' Peptide from Phage Display

1rpq, resolution 3.00Å

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