1yjd: Difference between revisions

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[[Image:1yjd.png|left|200px]]
==Crystal structure of human CD28 in complex with the Fab fragment of a mitogenic antibody (5.11A1)==
<StructureSection load='1yjd' size='340' side='right' caption='[[1yjd]], [[Resolution|resolution]] 2.70&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[1yjd]] is a 3 chain structure 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]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1YJD FirstGlance]. <br>
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene></td></tr>
<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">CD28 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 Homo sapiens])</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=1yjd FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1yjd OCA], [http://www.rcsb.org/pdb/explore.do?structureId=1yjd RCSB], [http://www.ebi.ac.uk/pdbsum/1yjd PDBsum]</span></td></tr>
</table>
== Function ==
[[http://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.
== 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/yj/1yjd_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 ==
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.


{{STRUCTURE_1yjd|  PDB=1yjd  |  SCENE=  }}
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>


===Crystal structure of human CD28 in complex with the Fab fragment of a mitogenic antibody (5.11A1)===
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
 
</div>
{{ABSTRACT_PUBMED_15696168}}
 
==About this Structure==
[[1yjd]] is a 3 chain structure 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].


==See Also==
==See Also==
*[[Antibody|Antibody]]
*[[Antibody|Antibody]]
 
== References ==
==Reference==
<references/>
<ref group="xtra">PMID:015696168</ref><references group="xtra"/>
__TOC__
</StructureSection>
[[Category: Homo sapiens]]
[[Category: Homo sapiens]]
[[Category: Mus musculus]]
[[Category: Mus musculus]]
[[Category: Davis, S J.]]
[[Category: Davis, S J]]
[[Category: Esnouf, R M.]]
[[Category: Esnouf, R M]]
[[Category: Evans, E J.]]
[[Category: Evans, E J]]
[[Category: Gilbert, R J.C.]]
[[Category: Gilbert, R J.C]]
[[Category: James, J R.]]
[[Category: James, J R]]
[[Category: Manso-Sancho, R.]]
[[Category: Manso-Sancho, R]]
[[Category: Sorensen, P.]]
[[Category: Sorensen, P]]
[[Category: Stuart, D I.]]
[[Category: Stuart, D I]]
[[Category: Cd28 homodimer]]
[[Category: Cd28 homodimer]]
[[Category: Igsf]]
[[Category: Igsf]]
[[Category: Immune system-signaling protein complex]]
[[Category: Immune system-signaling protein complex]]