2b5i: Difference between revisions

New page: left|200px<br /> <applet load="2b5i" size="450" color="white" frame="true" align="right" spinBox="true" caption="2b5i, resolution 2.30Å" /> '''cytokine receptor c...
 
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'''cytokine receptor complex'''<br />


==Overview==
==cytokine receptor complex==
Interleukin-2 (IL-2) is an immunoregulatory cytokine that acts through a, quaternary receptor signaling complex containing alpha (IL-2Ralpha), beta, (IL-2Rbeta), and common gamma chain (gc) receptors. In the structure of, the quaternary ectodomain complex as visualized at a resolution of 2.3, angstroms, the binding of IL-2Ralpha to IL-2 stabilizes a secondary, binding site for presentation to IL-2Rbeta. gammac is then recruited to, the composite surface formed by the IL-2/IL-2Rbeta complex. Consistent, with its role as a shared receptor for IL-4, IL-7, IL-9, IL-15, and IL-21, gammac forms degenerate contacts with IL-2. The structure of gammac, provides a rationale for loss-of-function mutations found in patients with, X-linked severe combined immunodeficiency diseases (X-SCID). This complex, structure provides a framework for other gammac-dependent, cytokine-receptor interactions and for the engineering of improved IL-2, therapeutics.
<StructureSection load='2b5i' size='340' side='right'caption='[[2b5i]], [[Resolution|resolution]] 2.30&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[2b5i]] is a 4 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=2B5I OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2B5I 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]] 2.3&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><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=2b5i FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2b5i OCA], [https://pdbe.org/2b5i PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2b5i RCSB], [https://www.ebi.ac.uk/pdbsum/2b5i PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2b5i ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/IL2RB_HUMAN IL2RB_HUMAN] Receptor for interleukin-2. This beta subunit is involved in receptor mediated endocytosis and transduces the mitogenic signals of IL2.
== 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/b5/2b5i_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=2b5i ConSurf].
<div style="clear:both"></div>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Interleukin-2 (IL-2) is an immunoregulatory cytokine that acts through a quaternary receptor signaling complex containing alpha (IL-2Ralpha), beta (IL-2Rbeta), and common gamma chain (gc) receptors. In the structure of the quaternary ectodomain complex as visualized at a resolution of 2.3 angstroms, the binding of IL-2Ralpha to IL-2 stabilizes a secondary binding site for presentation to IL-2Rbeta. gammac is then recruited to the composite surface formed by the IL-2/IL-2Rbeta complex. Consistent with its role as a shared receptor for IL-4, IL-7, IL-9, IL-15, and IL-21, gammac forms degenerate contacts with IL-2. The structure of gammac provides a rationale for loss-of-function mutations found in patients with X-linked severe combined immunodeficiency diseases (X-SCID). This complex structure provides a framework for other gammac-dependent cytokine-receptor interactions and for the engineering of improved IL-2 therapeutics.


==Disease==
Structure of the quaternary complex of interleukin-2 with its alpha, beta, and gammac receptors.,Wang X, Rickert M, Garcia KC Science. 2005 Nov 18;310(5751):1159-63. PMID:16293754<ref>PMID:16293754</ref>
Known diseases associated with this structure: Combined immunodeficiency, X-linked, moderate OMIM:[[http://www.ncbi.nlm.nih.gov/entrez/dispomim.cgi?id=308380 308380]], Diabetes mellitus, insulin-dependent, susceptibility to OMIM:[[http://www.ncbi.nlm.nih.gov/entrez/dispomim.cgi?id=147730 147730]], Interleukin-2 receptor, alpha chain, deficiency of OMIM:[[http://www.ncbi.nlm.nih.gov/entrez/dispomim.cgi?id=147730 147730]], Severe combined immunodeficiency due to IL2 deficiency OMIM:[[http://www.ncbi.nlm.nih.gov/entrez/dispomim.cgi?id=147680 147680]], Severe combined immunodeficiency, X-linked OMIM:[[http://www.ncbi.nlm.nih.gov/entrez/dispomim.cgi?id=308380 308380]]


==About this Structure==
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
2B5I is a [http://en.wikipedia.org/wiki/Protein_complex Protein complex] structure of sequences from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens] with NAG as [http://en.wikipedia.org/wiki/ligand ligand]. Full crystallographic information is available from [http://ispc.weizmann.ac.il/oca-bin/ocashort?id=2B5I OCA].
</div>
<div class="pdbe-citations 2b5i" style="background-color:#fffaf0;"></div>


==Reference==
==See Also==
Structure of the quaternary complex of interleukin-2 with its alpha, beta, and gammac receptors., Wang X, Rickert M, Garcia KC, Science. 2005 Nov 18;310(5751):1159-63. PMID:[http://ispc.weizmann.ac.il//pmbin/getpm?pmid=16293754 16293754]
*[[Interleukin 3D structures|Interleukin 3D structures]]
*[[Interleukin receptor|Interleukin receptor]]
*[[Interleukin receptor 3D structures|Interleukin receptor 3D structures]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Homo sapiens]]
[[Category: Homo sapiens]]
[[Category: Protein complex]]
[[Category: Large Structures]]
[[Category: Garcia, K.C.]]
[[Category: Garcia KC]]
[[Category: Rickert, M.]]
[[Category: Rickert M]]
[[Category: Wang, X.]]
[[Category: Wang X]]
[[Category: NAG]]
[[Category: fibronectin domain]]
[[Category: four-helix bundle]]
 
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