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[[Image:1t0p.gif|left|200px]]
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{{STRUCTURE_1t0p|  PDB=1t0p  |  SCENE=  }}
'''Structural Basis of ICAM recognition by integrin alpahLbeta2 revealed in the complex structure of binding domains of ICAM-3 and alphaLbeta2 at 1.65 A'''


==Structural Basis of ICAM recognition by integrin alpahLbeta2 revealed in the complex structure of binding domains of ICAM-3 and alphaLbeta2 at 1.65 A==
<StructureSection load='1t0p' size='340' side='right'caption='[[1t0p]], [[Resolution|resolution]] 1.66&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[1t0p]] is a 2 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=1T0P OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1T0P 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]] 1.66&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</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=1t0p FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1t0p OCA], [https://pdbe.org/1t0p PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1t0p RCSB], [https://www.ebi.ac.uk/pdbsum/1t0p PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1t0p ProSAT]</span></td></tr>
</table>
== 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.
== 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/t0/1t0p_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=1t0p ConSurf].
<div style="clear:both"></div>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Within the Ig superfamily (IgSF), intercellular adhesion molecules (ICAMs) form a subfamily that binds the leukocyte integrin alphaLbeta2. We report a 1.65-A-resolution crystal structure of the ICAM-3 N-terminal domain (D1) in complex with the inserted domain, the ligand-binding domain of alphaLbeta2. This high-resolution structure and comparisons among ICAM subfamily members establish that the binding of ICAM-3 D1 onto the inserted domain represents a common docking mode for ICAM subfamily members. The markedly different off-rates of ICAM-1, -2, and -3 appear to be determined by the hydrophobicity of residues that surround a metal coordination bond in the alphaLbeta2-binding interfaces. Variation in composition of glycans on the periphery of the interfaces influences on-rate.


==Overview==
An atomic resolution view of ICAM recognition in a complex between the binding domains of ICAM-3 and integrin alphaLbeta2.,Song G, Yang Y, Liu JH, Casasnovas JM, Shimaoka M, Springer TA, Wang JH Proc Natl Acad Sci U S A. 2005 Mar 1;102(9):3366-71. Epub 2005 Feb 22. PMID:15728350<ref>PMID:15728350</ref>
Within the Ig superfamily (IgSF), intercellular adhesion molecules (ICAMs) form a subfamily that binds the leukocyte integrin alphaLbeta2. We report a 1.65-A-resolution crystal structure of the ICAM-3 N-terminal domain (D1) in complex with the inserted domain, the ligand-binding domain of alphaLbeta2. This high-resolution structure and comparisons among ICAM subfamily members establish that the binding of ICAM-3 D1 onto the inserted domain represents a common docking mode for ICAM subfamily members. The markedly different off-rates of ICAM-1, -2, and -3 appear to be determined by the hydrophobicity of residues that surround a metal coordination bond in the alphaLbeta2-binding interfaces. Variation in composition of glycans on the periphery of the interfaces influences on-rate.


==About this Structure==
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
1T0P is a [[Protein complex]] structure of sequences from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1T0P OCA].
</div>
<div class="pdbe-citations 1t0p" style="background-color:#fffaf0;"></div>


==Reference==
==See Also==
An atomic resolution view of ICAM recognition in a complex between the binding domains of ICAM-3 and integrin alphaLbeta2., Song G, Yang Y, Liu JH, Casasnovas JM, Shimaoka M, Springer TA, Wang JH, Proc Natl Acad Sci U S A. 2005 Mar 1;102(9):3366-71. Epub 2005 Feb 22. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/15728350 15728350]
*[[Integrin 3D structures|Integrin 3D structures]]
*[[Intercellular adhesion molecule|Intercellular adhesion molecule]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Homo sapiens]]
[[Category: Homo sapiens]]
[[Category: Protein complex]]
[[Category: Large Structures]]
[[Category: Liu, J H.]]
[[Category: Liu JH]]
[[Category: Shimaoko, M.]]
[[Category: Shimaoko M]]
[[Category: Song, G.]]
[[Category: Song G]]
[[Category: Springer, T A.]]
[[Category: Springer TA]]
[[Category: Wang, J H.]]
[[Category: Wang JH]]
[[Category: Yang, Y T.]]
[[Category: Yang YT]]
[[Category: Ig-super family domain]]
[[Category: Rossmann fold]]
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May  3 09:21:41 2008''
Retrieved from "https://proteopedia.org/1t0p"