View source for 2ofh


==Solution structure of the n-terminal domain of the zinc(II) ATPase ziaa in its apo form==
<StructureSection load='2ofh' size='340' side='right'caption='[[2ofh]]' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[2ofh]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Synechocystis_sp._PCC_6803 Synechocystis sp. PCC 6803]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2OFH OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2OFH FirstGlance]. <br>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Solution NMR</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=2ofh FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2ofh OCA], [https://pdbe.org/2ofh PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2ofh RCSB], [https://www.ebi.ac.uk/pdbsum/2ofh PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2ofh ProSAT]</span></td></tr>
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== Function ==
[https://www.uniprot.org/uniprot/ATZN_SYNY3 ATZN_SYNY3] 
== 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/of/2ofh_consurf.spt"</scriptWhenChecked>
    <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.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=2ofh ConSurf].
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== Publication Abstract from PubMed ==
A Cu(I) metallochaperone, Atx1, interacts with the amino-terminal domain of a Cu(I)-transporting ATPase, PacS(N), but not with a domain of related Zn-transporting ATPase, ZiaA(N) in Synechocystis PCC 6803. This is thought to prevent ZiaA(N) from acquiring Cu(I), which it binds more tightly than Zn. Solution structures of Atx1, PacS(N), and the heterodimer were previously described. Here we report solution structural studies of the ZiaA(N) soluble domain. Apo-ZiaA(N) has a typical ferredoxin-like fold followed by an atypical 34 residues of unstructured polypeptide containing a His(7) motif. ZiaA(N) competes with the metallochromic indicator 4-(2-pyridylazo)resorcinol for 1 equiv of Zn, which can be displaced by thiol-modifying p-mercuriphenylsulfonic acid, establishing that a high-affinity site involves thiols of the CXXC motif within the ferredoxin-like fold. A single equivalent of Zn affects nuclear magnetic resonance signals arising from the CXXC motif as well as all seven His residues. The presence of NMR-line broadening in both sites implies that Zn(1)-ZiaA(N) undergoes exchange phenomena, consistent with CXXC-bound Zn coincidentally sampling various His ligands. These Zn-dependent dynamic changes could either aid metal transfer or alter intramolecular interactions. No formation of Atx1-Cu(I)-ZiaA(N) heterodimers was observed, and in the presence of equimolar ZiaA(N) and PacS(N), only Atx1-Cu(I)-PacS(N) complexes were detected. Residues flanking the CXXC motif of PacS(N) (R(13)-ASS(20)) differ in charge and bulk from those of ZiaA(N) (D(18)-KLK(25)) and make contacts in the Atx1-Cu(I)-PacS(N) complex. Crucially, swapping these residues flanking the CXXC motifs of ZiaA(N) and PacS(N) reciprocally swaps partner choice by Atx1. These few residues of the two ATPases have diverged during evolution to bias Atx1 interactions in favor of PacS(N) rather than ZiaA(N.).

NMR structural analysis of the soluble domain of ZiaA-ATPase and the basis of selective interactions with copper metallochaperone Atx1.,Banci L, Bertini I, Ciofi-Baffoni S, Poggi L, Vanarotti M, Tottey S, Waldron KJ, Robinson NJ J Biol Inorg Chem. 2010 Jan;15(1):87-98. Epub 2009 Jul 16. PMID:19609573<ref>PMID:19609573</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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==See Also==
*[[ATPase 3D structures|ATPase 3D structures]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Large Structures]]
[[Category: Synechocystis sp. PCC 6803]]
[[Category: Banci L]]
[[Category: Bertini I]]
[[Category: Ciofi-Baffoni S]]
[[Category: Poggi L]]
[[Category: Robinson NJ]]
[[Category: Vanarotti M]]