1dqt: Difference between revisions

← Older edit

Proteopedia Page Contributors and Editors (what is this?)Proteopedia Page Contributors and Editors (what is this?)

OCA

@@ Line 1: / Line 1: @@
-[[Image:1dqt.gif|left|200px]]
-<!--
-The line below this paragraph, containing "STRUCTURE_1dqt", creates the "Structure Box" on the page.
-You may change the PDB parameter (which sets the PDB file loaded into the applet)
-or the SCENE parameter (which sets the initial scene displayed when the page is loaded),
-or leave the SCENE parameter empty for the default display.
--->
-{{STRUCTURE_1dqt|  PDB=1dqt  |  SCENE=  }}
-'''THE CRYSTAL STRUCTURE OF MURINE CTLA4 (CD152)'''
+==THE CRYSTAL STRUCTURE OF MURINE CTLA4 (CD152)==
+<StructureSection load='1dqt' size='340' side='right'caption='[[1dqt]], [[Resolution|resolution]] 2.00&Aring;' scene=''>
+== Structural highlights ==
+<table><tr><td colspan='2'>[[1dqt]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Mus_musculus Mus musculus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1DQT OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1DQT FirstGlance]. <br>
+</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&#8491;</td></tr>
+<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=EDO:1,2-ETHANEDIOL'>EDO</scene></td></tr>
+<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1dqt FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1dqt OCA], [https://pdbe.org/1dqt PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1dqt RCSB], [https://www.ebi.ac.uk/pdbsum/1dqt PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1dqt ProSAT]</span></td></tr>
+</table>
+== Function ==
+[https://www.uniprot.org/uniprot/CTLA4_MOUSE CTLA4_MOUSE] Inhibitory receptor acting as a major negative regulator of T-cell responses. The affinity of CTLA4 for its natural B7 family ligands, CD80 and CD86, is considerably stronger than the affinity of their cognate stimulatory coreceptor CD28 (By similarity).
+== 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/dq/1dqt_consurf.spt"</scriptWhenChecked>
+    <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview03.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/main_output.php?pdb_ID=1dqt ConSurf].
+<div style="clear:both"></div>
+<div style="background-color:#fffaf0;">
+== Publication Abstract from PubMed ==
+The effective regulation of T cell responses is dependent on opposing signals transmitted through two related cell-surface receptors, CD28 and cytotoxic T lymphocyte-associated antigen 4 (CTLA-4). Dimerization of CTLA-4 is required for the formation of high-avidity complexes with B7 ligands and for transmission of signals that attenuate T cell activation. We determined the crystal structure of the extracellular portion of CTLA-4 to 2.0 angstrom resolution. CTLA-4 belongs to the immunoglobulin superfamily and displays a strand topology similar to Valpha domains, with an unusual mode of dimerization that places the B7 binding sites distal to the dimerization interface. This organization allows each CTLA-4 dimer to bind two bivalent B7 molecules and suggests that a periodic arrangement of these components within the immunological synapse may contribute to the regulation of T cell responsiveness.
-==Overview==
+Structure of murine CTLA-4 and its role in modulating T cell responsiveness.,Ostrov DA, Shi W, Schwartz JC, Almo SC, Nathenson SG Science. 2000 Oct 27;290(5492):816-9. PMID:11052947<ref>PMID:11052947</ref>
-The effective regulation of T cell responses is dependent on opposing signals transmitted through two related cell-surface receptors, CD28 and cytotoxic T lymphocyte-associated antigen 4 (CTLA-4). Dimerization of CTLA-4 is required for the formation of high-avidity complexes with B7 ligands and for transmission of signals that attenuate T cell activation. We determined the crystal structure of the extracellular portion of CTLA-4 to 2.0 angstrom resolution. CTLA-4 belongs to the immunoglobulin superfamily and displays a strand topology similar to Valpha domains, with an unusual mode of dimerization that places the B7 binding sites distal to the dimerization interface. This organization allows each CTLA-4 dimer to bind two bivalent B7 molecules and suggests that a periodic arrangement of these components within the immunological synapse may contribute to the regulation of T cell responsiveness.
-==About this Structure==
+From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
-DQT is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Mus_musculus Mus musculus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1DQT OCA].
+</div>
+<div class="pdbe-citations 1dqt" style="background-color:#fffaf0;"></div>
-==Reference==
+==See Also==
-Structure of murine CTLA-4 and its role in modulating T cell responsiveness., Ostrov DA, Shi W, Schwartz JC, Almo SC, Nathenson SG, Science. 2000 Oct 27;290(5492):816-9. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/11052947 11052947]
+*[[CTLA-4|CTLA-4]]
+== References ==
+<references/>
+__TOC__
+</StructureSection>
+[[Category: Large Structures]]
 [[Category: Mus musculus]]
-[[Category: Single protein]]
+[[Category: Almo SC]]
-[[Category: Almo, S C.]]
+[[Category: Nathenson SG]]
-[[Category: Nathenson, S G.]]
+[[Category: Ostrov DA]]
-[[Category: Ostrov, D A.]]
+[[Category: Schwartz JC]]
-[[Category: Schwartz, J C.]]
+[[Category: Shi W]]
-[[Category: Shi, W.]]
-[[Category: Homodimer]]
-[[Category: Immunoglobulin variable domain-like beta-sandwich]]
-''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May  2 14:10:06 2008''