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[[Image:1nze.gif|left|200px]]


{{Structure
==Crystal structure of PsbQ polypeptide of photosystem II from higher plants==
|PDB= 1nze |SIZE=350|CAPTION= <scene name='initialview01'>1nze</scene>, resolution 1.95&Aring;
<StructureSection load='1nze' size='340' side='right'caption='[[1nze]], [[Resolution|resolution]] 1.95&Aring;' scene=''>
|SITE=  
== Structural highlights ==
|LIGAND= <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene>
<table><tr><td colspan='2'>[[1nze]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Spinacia_oleracea Spinacia oleracea]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1NZE OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1NZE FirstGlance]. <br>
|ACTIVITY=  
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.95&#8491;</td></tr>
|GENE=  
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr>
|DOMAIN=
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1nze FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1nze OCA], [https://pdbe.org/1nze PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1nze RCSB], [https://www.ebi.ac.uk/pdbsum/1nze PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1nze ProSAT]</span></td></tr>
|RELATEDENTRY=[[1fe1|1FE1]], [[1ilx|1ILX]]
</table>
|RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1nze FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1nze OCA], [http://www.ebi.ac.uk/pdbsum/1nze PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=1nze RCSB]</span>
== Function ==
}}
[https://www.uniprot.org/uniprot/PSBQ_SPIOL PSBQ_SPIOL]
== 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/nz/1nze_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=1nze ConSurf].
<div style="clear:both"></div>


'''Crystal structure of PsbQ polypeptide of photosystem II from higher plants'''
==See Also==
 
*[[Photosystem II 3D structures|Photosystem II 3D structures]]
 
__TOC__
==Overview==
</StructureSection>
The smallest extrinsic polypeptide of the water-oxidizing complex (PsbQ) was extracted and purified from spinach (Spinacia oleracea) photosystem II (PSII) membranes. It was then crystallized in the presence of Zn(2+) and its structure was determined by X-ray diffraction at 1.95-A resolution using the multi-wavelength anomalous diffraction method, with the zinc as the anomalous scatterer. The crystal structure shows that the core of the protein is a four-helix bundle, whereas the amino-terminal portion, which possibly interacts with the photosystem core, is not visible in the crystal. The distribution of positive and negative charges on the protein surface might explain the ability of PsbQ to increase the binding of Cl(-) and Ca(2+) and make them available to PSII.
[[Category: Large Structures]]
 
==About this Structure==
1NZE is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Spinacia_oleracea Spinacia oleracea]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1NZE OCA].
 
==Reference==
Crystal structure of the PsbQ protein of photosystem II from higher plants., Calderone V, Trabucco M, Vujicic A, Battistutta R, Giacometti GM, Andreucci F, Barbato R, Zanotti G, EMBO Rep. 2003 Sep;4(9):900-5. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/12949587 12949587]
[[Category: Single protein]]
[[Category: Spinacia oleracea]]
[[Category: Spinacia oleracea]]
[[Category: Andreucci, F.]]
[[Category: Andreucci F]]
[[Category: Barbato, R.]]
[[Category: Barbato R]]
[[Category: Battistutta, R.]]
[[Category: Battistutta R]]
[[Category: Calderone, V.]]
[[Category: Calderone V]]
[[Category: Giacometti, G M.]]
[[Category: Giacometti GM]]
[[Category: Trabucco, M.]]
[[Category: Trabucco M]]
[[Category: Vujicic, A.]]
[[Category: Vujicic A]]
[[Category: Zanotti, G.]]
[[Category: Zanotti G]]
[[Category: oee3]]
[[Category: oxygen-enhancer evolving complex]]
[[Category: photosystem ii]]
[[Category: psbq]]
[[Category: water oxidizing complex]]
 
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Retrieved from "https://proteopedia.org/1nze"