2vsd: Difference between revisions

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{{Seed}}
[[Image:2vsd.png|left|200px]]


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==crystal structure of CHIR-AB1==
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<StructureSection load='2vsd' size='340' side='right'caption='[[2vsd]], [[Resolution|resolution]] 1.82&Aring;' scene=''>
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== Structural highlights ==
or the SCENE parameter (which sets the initial scene displayed when the page is loaded),
<table><tr><td colspan='2'>[[2vsd]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Gallus_gallus Gallus gallus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2VSD OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2VSD FirstGlance]. <br>
or leave the SCENE parameter empty for the default display.
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.82&#8491;</td></tr>
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<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=BMA:BETA-D-MANNOSE'>BMA</scene>, <scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene></td></tr>
{{STRUCTURE_2vsd|  PDB=2vsd  |  SCENE=  }}
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=2vsd FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2vsd OCA], [https://pdbe.org/2vsd PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2vsd RCSB], [https://www.ebi.ac.uk/pdbsum/2vsd PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2vsd ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/Q5ZJ90_CHICK Q5ZJ90_CHICK]
== 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/vs/2vsd_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=2vsd ConSurf].
<div style="clear:both"></div>
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== Publication Abstract from PubMed ==
CHIR-AB1 is a newly identified avian immunoglobulin (Ig) receptor that includes both activating and inhibitory motifs and was therefore classified as a potentially bifunctional receptor. Recently, CHIR-AB1 was shown to bind the Fc region of chicken IgY and to induce calcium mobilization via association with the common gamma-chain, a subunit that transmits signals upon ligation of many different immunoreceptors. Here we describe the 1.8-A-resolution crystal structure of the CHIR-AB1 ectodomain. The receptor ectodomain consists of a single C2-type Ig domain resembling the Ig-like domains found in mammalian Fc receptors such as FcgammaRs and FcalphaRI. Unlike these receptors and other monomeric Ig superfamily members, CHIR-AB1 crystallized as a 2-fold symmetrical homodimer that bears no resemblance to variable or constant region dimers in an antibody. Analytical ultracentrifugation demonstrated that CHIR-AB1 exists as a mixture of monomers and dimers in solution, and equilibrium gel filtration revealed a 2:1 receptor/ligand binding stoichiometry. Measurement of the 1:1 CHIR-AB1/IgY interaction affinity indicates a relatively low affinity complex, but a 2:1 CHIR-AB1/IgY interaction allows an increase in apparent affinity due to avidity effects when the receptor is tethered to a surface. Taken together, these results add to the structural understanding of Fc receptors and their functional mechanisms.


===CRYSTAL STRUCTURE OF CHIR-AB1===
The crystal structure of CHIR-AB1: a primordial avian classical Fc receptor.,Arnon TI, Kaiser JT, West AP Jr, Olson R, Diskin R, Viertlboeck BC, Gobel TW, Bjorkman PJ J Mol Biol. 2008 Sep 12;381(4):1012-24. Epub 2008 Jul 3. PMID:18625238<ref>PMID:18625238</ref>


 
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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(as it appears on PubMed at http://www.pubmed.gov), where 18625238 is the PubMed ID number.
== References ==
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<references/>
{{ABSTRACT_PUBMED_18625238}}
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</StructureSection>
==About this Structure==
2VSD is a 1 chain structure of sequence from [http://en.wikipedia.org/wiki/Gallus_gallus Gallus gallus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2VSD OCA].
 
==Reference==
<ref group="xtra">PMID:18625238</ref><references group="xtra"/>
[[Category: Gallus gallus]]
[[Category: Gallus gallus]]
[[Category: Arnon, T I.]]
[[Category: Large Structures]]
[[Category: Bjorkman, P J.]]
[[Category: Arnon TI]]
[[Category: Kaiser, J T.]]
[[Category: Bjorkman PJ]]
[[Category: Fc receptor]]
[[Category: Kaiser JT]]
[[Category: Immune system receptor]]
 
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Retrieved from "https://proteopedia.org/2vsd"