2bns: Difference between revisions

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[[Image:2bns.gif|left|200px]]<br />
<applet load="2bns" size="450" color="white" frame="true" align="right" spinBox="true"
caption="2bns, resolution 2.50&Aring;" />
'''LIPIDIC CUBIC PHASE GROWN REACTION CENTRE FROM RHODOBACTER SPHAEROIDES, EXCITED STATE'''<br />


==Overview==
==Lipidic cubic phase grown reaction centre from Rhodobacter sphaeroides, excited state==
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.
<StructureSection load='2bns' size='340' side='right'caption='[[2bns]], [[Resolution|resolution]] 2.50&Aring;' scene=''>
== Structural highlights ==
<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>
</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>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><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>
<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>
</table>
== Function ==
[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.
== 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/bn/2bns_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=2bns ConSurf].
<div style="clear:both"></div>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
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.


==About this Structure==
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>
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 FE2, PO4, CL, BCL, BH1, MST and U10 as [http://en.wikipedia.org/wiki/ligands ligands]. Structure known Active Site: AC1. Full crystallographic information is available from [http://ispc.weizmann.ac.il/oca-bin/ocashort?id=2BNS OCA].


==Reference==
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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]
</div>
[[Category: Protein complex]]
<div class="pdbe-citations 2bns" style="background-color:#fffaf0;"></div>
[[Category: Rhodobacter sphaeroides]]
== References ==
[[Category: Andreasson, L.E.]]
<references/>
[[Category: Andreasson, U.]]
__TOC__
[[Category: Gourdon, P.]]
</StructureSection>
[[Category: Hansson, O.]]
[[Category: Cereibacter sphaeroides]]
[[Category: Katona, G.]]
[[Category: Large Structures]]
[[Category: Neutze, R.]]
[[Category: Andreasson LE]]
[[Category: Snijder, A.]]
[[Category: Andreasson U]]
[[Category: BCL]]
[[Category: Gourdon P]]
[[Category: BH1]]
[[Category: Hansson O]]
[[Category: CL]]
[[Category: Katona G]]
[[Category: FE2]]
[[Category: Neutze R]]
[[Category: MST]]
[[Category: Snijder A]]
[[Category: PO4]]
[[Category: U10]]
[[Category: bacterial photosynthesis]]
[[Category: bacteriochlorophyll]]
[[Category: chlorophyll]]
[[Category: chromophore]]
[[Category: electron transport]]
[[Category: intermediate trapping]]
[[Category: iron]]
[[Category: lipidic cubic phase]]
[[Category: magnesium]]
[[Category: membrane protein]]
[[Category: qa-p+ charge separated state]]
[[Category: reaction centre]]
[[Category: transmembrane]]
[[Category: transport]]
 
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Retrieved from "https://proteopedia.org/2bns"