2bns

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[[Image:2bns.gif|left|200px]]<br /><applet load="2bns" size="350" color="white" frame="true" align="right" spinBox="true"
 
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caption="2bns, resolution 2.50&Aring;" />
 
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'''LIPIDIC CUBIC PHASE GROWN REACTION CENTRE FROM RHODOBACTER SPHAEROIDES, EXCITED STATE'''<br />
 
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==Overview==
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==Lipidic cubic phase grown reaction centre from Rhodobacter sphaeroides, excited state==
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In bright light the photosynthetic reaction center (RC) of Rhodobacter, sphaeroides stabilizes the P(+)(870).Q(-)(A) charge-separated state and, thereby minimizes the potentially harmful effects of light saturation., Using X-ray diffraction we report a conformational change that occurs, within the cytoplasmic domain of this RC in response to prolonged, illumination with bright light. Our observations suggest a novel, structural mechanism for the regulation of electron transfer reactions in, photosynthesis.
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<StructureSection load='2bns' size='340' side='right'caption='[[2bns]], [[Resolution|resolution]] 2.50&Aring;' scene=''>
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== Structural highlights ==
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<table><tr><td colspan='2'>[[2bns]] is a 3 chain structure with sequence from [https://en.wikipedia.org/wiki/Cereibacter_sphaeroides Cereibacter sphaeroides]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2BNS OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2BNS FirstGlance]. <br>
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</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.5&#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=BCL:BACTERIOCHLOROPHYLL+A'>BCL</scene>, <scene name='pdbligand=BPH:BACTERIOPHEOPHYTIN+A'>BPH</scene>, <scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=FE2:FE+(II)+ION'>FE2</scene>, <scene name='pdbligand=MST:2-T-BUTYLAMINO-4-ETHYLAMINO-6-METHYLTHIO-S-TRIAZINE'>MST</scene>, <scene name='pdbligand=PO4:PHOSPHATE+ION'>PO4</scene>, <scene name='pdbligand=U10:UBIQUINONE-10'>U10</scene></td></tr>
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<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=2bns FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2bns OCA], [https://pdbe.org/2bns PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2bns RCSB], [https://www.ebi.ac.uk/pdbsum/2bns PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2bns ProSAT]</span></td></tr>
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</table>
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== Function ==
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[https://www.uniprot.org/uniprot/RCEL_CERSP RCEL_CERSP] The reaction center is a membrane-bound complex that mediates the initial photochemical event in the electron transfer process of photosynthesis.
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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/bn/2bns_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/main_output.php?pdb_ID=2bns 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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In bright light the photosynthetic reaction center (RC) of Rhodobacter sphaeroides stabilizes the P(+)(870).Q(-)(A) charge-separated state and thereby minimizes the potentially harmful effects of light saturation. Using X-ray diffraction we report a conformational change that occurs within the cytoplasmic domain of this RC in response to prolonged illumination with bright light. Our observations suggest a novel structural mechanism for the regulation of electron transfer reactions in photosynthesis.
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==About this Structure==
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Conformational regulation of charge recombination reactions in a photosynthetic bacterial reaction center.,Katona G, Snijder A, Gourdon P, Andreasson U, Hansson O, Andreasson LE, Neutze R Nat Struct Mol Biol. 2005 Jul;12(7):630-1. Epub 2005 Jun 5. PMID:15937492<ref>PMID:15937492</ref>
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2BNS is a [http://en.wikipedia.org/wiki/Protein_complex Protein complex] structure of sequences from [http://en.wikipedia.org/wiki/Rhodobacter_sphaeroides Rhodobacter sphaeroides] with <scene name='pdbligand=FE2:'>FE2</scene>, <scene name='pdbligand=PO4:'>PO4</scene>, <scene name='pdbligand=CL:'>CL</scene>, <scene name='pdbligand=BCL:'>BCL</scene>, <scene name='pdbligand=BH1:'>BH1</scene>, <scene name='pdbligand=MST:'>MST</scene> and <scene name='pdbligand=U10:'>U10</scene> as [http://en.wikipedia.org/wiki/ligands ligands]. Known structural/functional Site: <scene name='pdbsite=AC1:Mst+Binding+Site+For+Chain+A'>AC1</scene>. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2BNS OCA].
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==Reference==
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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Conformational regulation of charge recombination reactions in a photosynthetic bacterial reaction center., Katona G, Snijder A, Gourdon P, Andreasson U, Hansson O, Andreasson LE, Neutze R, Nat Struct Mol Biol. 2005 Jul;12(7):630-1. Epub 2005 Jun 5. PMID:[http://ispc.weizmann.ac.il//pmbin/getpm?pmid=15937492 15937492]
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</div>
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[[Category: Protein complex]]
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<div class="pdbe-citations 2bns" style="background-color:#fffaf0;"></div>
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[[Category: Rhodobacter sphaeroides]]
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== References ==
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[[Category: Andreasson, L.E.]]
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<references/>
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[[Category: Andreasson, U.]]
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__TOC__
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[[Category: Gourdon, P.]]
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</StructureSection>
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[[Category: Hansson, O.]]
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[[Category: Cereibacter sphaeroides]]
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[[Category: Katona, G.]]
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[[Category: Large Structures]]
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[[Category: Neutze, R.]]
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[[Category: Andreasson LE]]
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[[Category: Snijder, A.]]
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[[Category: Andreasson U]]
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[[Category: BCL]]
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[[Category: Gourdon P]]
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[[Category: BH1]]
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[[Category: Hansson O]]
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[[Category: CL]]
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[[Category: Katona G]]
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[[Category: FE2]]
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[[Category: Neutze R]]
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[[Category: MST]]
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[[Category: Snijder A]]
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[[Category: PO4]]
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[[Category: U10]]
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[[Category: bacterial photosynthesis]]
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[[Category: bacteriochlorophyll]]
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[[Category: chlorophyll]]
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[[Category: chromophore]]
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[[Category: electron transport]]
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[[Category: intermediate trapping]]
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[[Category: iron]]
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[[Category: lipidic cubic phase]]
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[[Category: magnesium]]
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[[Category: membrane protein]]
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[[Category: qa-p+ charge separated state]]
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[[Category: reaction centre]]
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[[Category: transmembrane]]
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[[Category: transport]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Feb 3 10:26:10 2008''
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Current revision

Lipidic cubic phase grown reaction centre from Rhodobacter sphaeroides, excited state

PDB ID 2bns

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