1mqa: Difference between revisions

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<StructureSection load='1mqa' size='340' side='right'caption='[[1mqa]], [[Resolution|resolution]] 2.50&Aring;' scene=''>
<StructureSection load='1mqa' size='340' side='right'caption='[[1mqa]], [[Resolution|resolution]] 2.50&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
<table><tr><td colspan='2'>[[1mqa]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Human Human]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1MQA OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1MQA FirstGlance]. <br>
<table><tr><td colspan='2'>[[1mqa]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1MQA OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1MQA FirstGlance]. <br>
</td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat"><div style='overflow: auto; max-height: 3em;'>[[1mq8|1mq8]], [[1mq9|1mq9]]</div></td></tr>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.5&#8491;</td></tr>
<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">LFA-1 (AlphaLbeta2) ([https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN])</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=1mqa FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1mqa OCA], [https://pdbe.org/1mqa PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1mqa RCSB], [https://www.ebi.ac.uk/pdbsum/1mqa PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1mqa ProSAT]</span></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=1mqa FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1mqa OCA], [https://pdbe.org/1mqa PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1mqa RCSB], [https://www.ebi.ac.uk/pdbsum/1mqa PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1mqa ProSAT]</span></td></tr>
</table>
</table>
== Function ==
== Function ==
[[https://www.uniprot.org/uniprot/ITAL_HUMAN ITAL_HUMAN]] Integrin alpha-L/beta-2 is a receptor for ICAM1, ICAM2, ICAM3 and ICAM4. It is involved in a variety of immune phenomena including leukocyte-endothelial cell interaction, cytotoxic T-cell mediated killing, and antibody dependent killing by granulocytes and monocytes.  
[https://www.uniprot.org/uniprot/ITAL_HUMAN ITAL_HUMAN] Integrin alpha-L/beta-2 is a receptor for ICAM1, ICAM2, ICAM3 and ICAM4. It is involved in a variety of immune phenomena including leukocyte-endothelial cell interaction, cytotoxic T-cell mediated killing, and antibody dependent killing by granulocytes and monocytes.
== Evolutionary Conservation ==
== Evolutionary Conservation ==
[[Image:Consurf_key_small.gif|200px|right]]
[[Image:Consurf_key_small.gif|200px|right]]
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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=1mqa ConSurf].
</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=1mqa ConSurf].
<div style="clear:both"></div>
<div style="clear:both"></div>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
The structure of the I domain of integrin alpha L beta 2 bound to the Ig superfamily ligand ICAM-1 reveals the open ligand binding conformation and the first example of an integrin-IgSF interface. The I domain Mg2+ directly coordinates Glu-34 of ICAM-1, and a dramatic swing of I domain residue Glu-241 enables a critical salt bridge. Liganded and unliganded structures for both high- and intermediate-affinity mutant I domains reveal that ligand binding can induce conformational change in the alpha L I domain and that allosteric signals can convert the closed conformation to intermediate or open conformations without ligand binding. Pulling down on the C-terminal alpha 7 helix with introduced disulfide bonds ratchets the beta 6-alpha 7 loop into three different positions in the closed, intermediate, and open conformations, with a progressive increase in affinity.
Structures of the alpha L I domain and its complex with ICAM-1 reveal a shape-shifting pathway for integrin regulation.,Shimaoka M, Xiao T, Liu JH, Yang Y, Dong Y, Jun CD, McCormack A, Zhang R, Joachimiak A, Takagi J, Wang JH, Springer TA Cell. 2003 Jan 10;112(1):99-111. PMID:12526797<ref>PMID:12526797</ref>
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 1mqa" style="background-color:#fffaf0;"></div>


==See Also==
==See Also==
*[[Integrin 3D structures|Integrin 3D structures]]
*[[Integrin 3D structures|Integrin 3D structures]]
== References ==
<references/>
__TOC__
__TOC__
</StructureSection>
</StructureSection>
[[Category: Human]]
[[Category: Homo sapiens]]
[[Category: Large Structures]]
[[Category: Large Structures]]
[[Category: Dong, Y]]
[[Category: Dong Y]]
[[Category: Jun, C D]]
[[Category: Jun C-D]]
[[Category: Liu, J H]]
[[Category: Liu J-H]]
[[Category: Shimaoka, T]]
[[Category: Shimaoka T]]
[[Category: Springer, T A]]
[[Category: Springer TA]]
[[Category: Takagi, J]]
[[Category: Takagi J]]
[[Category: Wang, J H]]
[[Category: Wang J-H]]
[[Category: Xiao, T]]
[[Category: Xiao T]]
[[Category: Yang, Y]]
[[Category: Yang Y]]
[[Category: Zhang, R]]
[[Category: Zhang R]]
[[Category: Designed disulfide bridge]]
[[Category: Immune system]]
[[Category: Rossmann fold]]
Retrieved from "https://proteopedia.org/1mqa"