1yjd: Difference between revisions
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[[Image: | ==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]] 2.70Å' 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. | |||
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> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
</div> | |||
==See Also== | ==See Also== | ||
*[[Antibody|Antibody]] | *[[Antibody|Antibody]] | ||
== References == | |||
== | <references/> | ||
< | __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]] | ||