3eni: Difference between revisions

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{{Seed}}
[[Image:3eni.jpg|left|200px]]


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==Crystal structure of the Fenna-Matthews-Olson Protein from Chlorobaculum Tepidum==
The line below this paragraph, containing "STRUCTURE_3eni", creates the "Structure Box" on the page.
<StructureSection load='3eni' size='340' side='right'caption='[[3eni]], [[Resolution|resolution]] 2.20&Aring;' scene=''>
You may change the PDB parameter (which sets the PDB file loaded into the applet)
== Structural highlights ==
or the SCENE parameter (which sets the initial scene displayed when the page is loaded),
<table><tr><td colspan='2'>[[3eni]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Chlorobaculum_tepidum Chlorobaculum tepidum]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3ENI OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3ENI FirstGlance]. <br>
or leave the SCENE parameter empty for the default display.
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.2&#8491;</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=3eni FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3eni OCA], [https://pdbe.org/3eni PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3eni RCSB], [https://www.ebi.ac.uk/pdbsum/3eni PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3eni ProSAT]</span></td></tr>
{{STRUCTURE_3eni|  PDB=3eni  |  SCENE=  }}
</table>
== Function ==
[https://www.uniprot.org/uniprot/BCPA_CHLTE BCPA_CHLTE] Intermediary in the transfer of excitation energy from the chlorophyll to the reaction centers.
== 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/en/3eni_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=3eni ConSurf].
<div style="clear:both"></div>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
The absorbance spectrum of the Fenna-Matthews-Olson protein--a component of the antenna system of Green Sulfur Bacteria--is always one of two types, depending on the species of the source organism. The FMO from Prosthecochloris aestuarii 2K has a spectrum of type 1 while that from Chlorobaculum tepidum is of type 2. The previously reported crystal structures for these two proteins did not disclose any rationale that would explain their spectral differences. We have collected a 1.3 A X-ray diffraction dataset of the FMO from Prosthecochloris aestuarii 2K, which has allowed us to identify an additional Bacteriochlorophyll-a molecule with chemical attachments to both sides of the central magnesium atom. A new analysis of the previously published X-ray data for the Chlorobaculum tepidum FMO shows the presence of a Bacteriochlorophyll-a molecule in an equivalent location but with a chemical attachment from only one side. This difference in binding is shown to be predictive of the spectral type of the FMO.


===Crystal structure of the Fenna-Matthews-Olson Protein from Chlorobaculum Tepidum===
The structural basis for the difference in absorbance spectra for the FMO antenna protein from various green sulfur bacteria.,Tronrud DE, Wen J, Gay L, Blankenship RE Photosynth Res. 2009 May;100(2):79-87. Epub 2009 May 13. PMID:19437128<ref>PMID:19437128</ref>


 
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
==About this Structure==
</div>
3ENI is a 2 chains structure of sequences from [http://en.wikipedia.org/wiki/Chlorobaculum_tepidum Chlorobaculum tepidum]. This structure supersedes the now removed PDB entries  and [http://oca.weizmann.ac.il/oca-bin/send-pdb?obs=1&id=1m50 1m50]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3ENI OCA].
<div class="pdbe-citations 3eni" style="background-color:#fffaf0;"></div>
 
== References ==
==Reference==
<references/>
<ref group="xtra">PMID:16245093</ref><ref group="xtra">PMID:9268671</ref><references group="xtra"/>
__TOC__
</StructureSection>
[[Category: Chlorobaculum tepidum]]
[[Category: Chlorobaculum tepidum]]
[[Category: Allen, J P.]]
[[Category: Large Structures]]
[[Category: Blankenship, R.]]
[[Category: Allen JP]]
[[Category: Camara-Artigas, A.]]
[[Category: Blankenship R]]
[[Category: Tronrud, D.]]
[[Category: Camara-Artigas A]]
[[Category: Bacteriochlorophyll]]
[[Category: Tronrud D]]
[[Category: Beta sheet]]
[[Category: Chlorophyll]]
[[Category: Chromophore]]
[[Category: Electron transport]]
[[Category: Gamma turn]]
[[Category: Magnesium]]
[[Category: Metal-binding]]
[[Category: Photosynthesis]]
[[Category: Reaction center]]
[[Category: Transport]]
 
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