2wcf

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[[Image:2wcf.png|left|200px]]
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==CALCIUM-FREE (APO) S100A12==
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<StructureSection load='2wcf' size='340' side='right' caption='[[2wcf]], [[Resolution|resolution]] 2.78&Aring;' scene=''>
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== Structural highlights ==
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<table><tr><td colspan='2'>[[2wcf]] is a 6 chain structure with sequence 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=2WCF OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2WCF FirstGlance]. <br>
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</td></tr><tr><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=NA:SODIUM+ION'>NA</scene><br>
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<tr><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[2wcb|2wcb]], [[1gqm|1gqm]], [[2wc8|2wc8]], [[1odb|1odb]], [[1e8a|1e8a]], [[2wce|2wce]]</td></tr>
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<tr><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2wcf FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2wcf OCA], [http://www.rcsb.org/pdb/explore.do?structureId=2wcf RCSB], [http://www.ebi.ac.uk/pdbsum/2wcf PDBsum]</span></td></tr>
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<table>
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== Evolutionary Conservation ==
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[[Image:Consurf_key_small.gif|200px|right]]
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Check<jmol>
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<jmolCheckbox>
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<scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/wc/2wcf_consurf.spt"</scriptWhenChecked>
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<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
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<text>to colour the structure by Evolutionary Conservation</text>
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</jmolCheckbox>
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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/chain_selection.php?pdb_ID=2ata ConSurf].
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<div style="clear:both"></div>
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<div style="background-color:#fffaf0;">
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== Publication Abstract from PubMed ==
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The functions of the members of the S100 family of EF-hand proteins are modulated by calcium and, in a number of cases, by zinc or copper. One such protein is S100A12, which is implicated in inflammation and host-parasite responses. Previously, we reported the structures of human S100A12 in both low (dimeric) and high (hexameric) calcium forms and, in addition, that of a complex with copper and calcium. Here we report the crystal structures of the metal-free apo form of human S100A12 at 1.77 A resolution and of the zinc complex in two crystal forms (P2(1)2(1)2(1) and F222) to 1.88 A and 1.73 A resolution, respectively. These are the first structures of a zinc-only complex of an S100 protein to be determined. The zinc complex structure shows significant differences from those of both calcium-loaded and apo-S100A12 structures, and comparisons suggest an explanation for the zinc-induced 1500-fold increase in calcium affinity. In addition, the new structures provide insight into the role of zinc-calcium interplay in the transition of S100A12 from a dimer through a tetramer to a hexamer. The role of both zinc and calcium in target binding by S100A12 during host-parasite responses is confirmed by experiments with paramyosin from the tropical parasites Onchocerca volvulus and Brugia malayi.
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{{STRUCTURE_2wcf| PDB=2wcf | SCENE= }}
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The crystal structures of human S100A12 in apo form and in complex with zinc: new insights into S100A12 oligomerisation.,Moroz OV, Blagova EV, Wilkinson AJ, Wilson KS, Bronstein IB J Mol Biol. 2009 Aug 21;391(3):536-51. Epub 2009 Jun 6. PMID:19501594<ref>PMID:19501594</ref>
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===CALCIUM-FREE (APO) S100A12===
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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</div>
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{{ABSTRACT_PUBMED_19501594}}
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==See Also==
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*[[S100 protein|S100 protein]]
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==About this Structure==
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== References ==
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[[2wcf]] is a 6 chain structure with sequence 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=2WCF OCA].
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<references/>
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__TOC__
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==Reference==
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</StructureSection>
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<ref group="xtra">PMID:019501594</ref><ref group="xtra">PMID:011134923</ref><references group="xtra"/>
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[[Category: Homo sapiens]]
[[Category: Homo sapiens]]
[[Category: Blagova, E V.]]
[[Category: Blagova, E V.]]

Revision as of 01:49, 1 October 2014

CALCIUM-FREE (APO) S100A12

2wcf, resolution 2.78Å

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