1yjd

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[[Image:1yjd.png|left|200px]]
 
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{{STRUCTURE_1yjd| PDB=1yjd | SCENE= }}
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==Crystal structure of human CD28 in complex with the Fab fragment of a mitogenic antibody (5.11A1)==
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<StructureSection load='1yjd' size='340' side='right'caption='[[1yjd]], [[Resolution|resolution]] 2.70&Aring;' scene=''>
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== Structural highlights ==
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<table><tr><td colspan='2'>[[1yjd]] is a 3 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens] and [https://en.wikipedia.org/wiki/Mus_musculus Mus musculus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1YJD OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1YJD FirstGlance]. <br>
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</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.7&#8491;</td></tr>
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<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene></td></tr>
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<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1yjd FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1yjd OCA], [https://pdbe.org/1yjd PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1yjd RCSB], [https://www.ebi.ac.uk/pdbsum/1yjd PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1yjd ProSAT]</span></td></tr>
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</table>
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== Function ==
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[https://www.uniprot.org/uniprot/CD28_HUMAN CD28_HUMAN] Involved in T-cell activation, the induction of cell proliferation and cytokine production and promotion of T-cell survival.
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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/yj/1yjd_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/main_output.php?pdb_ID=1yjd 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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Naive T cell activation requires signaling by the T cell receptor and by nonclonotypic cell surface receptors. The most important costimulatory protein is the monovalent homodimer CD28, which interacts with CD80 and CD86 expressed on antigen-presenting cells. Here we present the crystal structure of a soluble form of CD28 in complex with the Fab fragment of a mitogenic antibody. Structural comparisons redefine the evolutionary relationships of CD28-related proteins, antigen receptors and adhesion molecules and account for the distinct ligand-binding and stoichiometric properties of CD28 and the related, inhibitory homodimer CTLA-4. Cryo-electron microscopy-based comparisons of complexes of CD28 with mitogenic and nonmitogenic antibodies place new constraints on models of antibody-induced receptor triggering. This work completes the initial structural characterization of the CD28-CTLA-4-CD80-CD86 signaling system.
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===Crystal structure of human CD28 in complex with the Fab fragment of a mitogenic antibody (5.11A1)===
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Crystal structure of a soluble CD28-Fab complex.,Evans EJ, Esnouf RM, Manso-Sancho R, Gilbert RJ, James JR, Yu C, Fennelly JA, Vowles C, Hanke T, Walse B, Hunig T, Sorensen P, Stuart DI, Davis SJ Nat Immunol. 2005 Mar;6(3):271-9. Epub 2005 Feb 6. PMID:15696168<ref>PMID:15696168</ref>
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{{ABSTRACT_PUBMED_15696168}}
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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</div>
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==About this Structure==
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<div class="pdbe-citations 1yjd" style="background-color:#fffaf0;"></div>
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[[1yjd]] is a 3 chain structure of [[Antibody]] with sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens] and [http://en.wikipedia.org/wiki/Mus_musculus Mus musculus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1YJD OCA].
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==See Also==
==See Also==
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*[[Antibody|Antibody]]
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*[[Antibody 3D structures|Antibody 3D structures]]
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*[[3D structures of non-human antibody|3D structures of non-human antibody]]
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==Reference==
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== References ==
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<ref group="xtra">PMID:015696168</ref><references group="xtra"/>
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<references/>
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__TOC__
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</StructureSection>
[[Category: Homo sapiens]]
[[Category: Homo sapiens]]
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[[Category: Large Structures]]
[[Category: Mus musculus]]
[[Category: Mus musculus]]
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[[Category: Davis, S J.]]
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[[Category: Davis SJ]]
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[[Category: Esnouf, R M.]]
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[[Category: Esnouf RM]]
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[[Category: Evans, E J.]]
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[[Category: Evans EJ]]
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[[Category: Gilbert, R J.C.]]
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[[Category: Gilbert RJC]]
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[[Category: James, J R.]]
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[[Category: James JR]]
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[[Category: Manso-Sancho, R.]]
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[[Category: Manso-Sancho R]]
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[[Category: Sorensen, P.]]
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[[Category: Sorensen P]]
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[[Category: Stuart, D I.]]
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[[Category: Stuart DI]]
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[[Category: Cd28 homodimer]]
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[[Category: Igsf]]
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[[Category: Immune system-signaling protein complex]]
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Current revision

Crystal structure of human CD28 in complex with the Fab fragment of a mitogenic antibody (5.11A1)

PDB ID 1yjd

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