View source for 2cwq

==Crystal structure of conserved protein TTHA0727 from Thermus thermophilus HB8==
<StructureSection load='2cwq' size='340' side='right' caption='[[2cwq]], [[Resolution|resolution]] 1.90&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[2cwq]] is a 3 chain structure with sequence from [http://en.wikipedia.org/wiki/Thet8 Thet8]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2CWQ OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2CWQ FirstGlance]. <br>
</td></tr><tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=MSE:SELENOMETHIONINE'>MSE</scene></td></tr>
<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">TTHA0727 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=300852 THET8])</td></tr>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2cwq FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2cwq OCA], [http://pdbe.org/2cwq PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2cwq RCSB], [http://www.ebi.ac.uk/pdbsum/2cwq PDBsum], [http://www.topsan.org/Proteins/RSGI/2cwq TOPSAN]</span></td></tr>
</table>
== 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/cw/2cwq_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/chain_selection.php?pdb_ID=2ata ConSurf].
<div style="clear:both"></div>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
TTHA0727 is a conserved hypothetical protein from Thermus thermophilus HB8, with a molecular mass of 12.6 kDa. TTHA0727 belongs to the carboxymuconolactone decarboxylase (CMD) family (Pfam 02627). A sequence comparison with its homologs suggested that TTHA0727 is a distinct protein from alkylhydroperoxidase AhpD and gamma-carboxymuconolactone decarboxylase in the CMD family. Here we report the 1.9 A crystal structure of TTHA0727 (PDB ID: 2CWQ) determined by the multiwavelength anomalous dispersion method. The TTHA0727 monomer structure consists of seven alpha-helices (alpha1-alpha7) and one short 3(10)-helix. The crystal structure and the analytical ultracentrifugation revealed that TTHA0727 forms a hexameric ring structure in solution. The electrostatic potential distribution on the solvent-accessible surface of the TTHA0727 hexamer showed that positively charged regions exist on the side of the ring structure, suggesting that TTHA0727 interacts with some negatively charged molecules. A structural homology search revealed that the structure of three alpha-helices (alpha4-alpha6) is remarkably conserved, suggesting that it is the common structural motif for the CMD family proteins. In addition, the nine residues of the N-terminal tag bound to the cleft region between alpha1 and alpha3 in chains A and B of TTHA0727, implying that this region is the putative binding/active site for some small molecules.

Crystal structure of the conserved protein TTHA0727 from Thermus thermophilus HB8 at 1.9 A resolution: A CMD family member distinct from carboxymuconolactone decarboxylase (CMD) and AhpD.,Ito K, Arai R, Fusatomi E, Kamo-Uchikubo T, Kawaguchi S, Akasaka R, Terada T, Kuramitsu S, Shirouzu M, Yokoyama S Protein Sci. 2006 May;15(5):1187-92. Epub 2006 Apr 5. PMID:16597838<ref>PMID:16597838</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 2cwq" style="background-color:#fffaf0;"></div>
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Thet8]]
[[Category: Arai, R]]
[[Category: Fusatomi, E]]
[[Category: Ito, K]]
[[Category: Kamo-Uchikubo, T]]
[[Category: Kawaguchi, S]]
[[Category: Structural genomic]]
[[Category: Shirouzu, M]]
[[Category: Terada, T]]
[[Category: Yokoyama, S]]
[[Category: All alpha]]
[[Category: Conserved hypothetical protein]]
[[Category: National project on protein structural and functional analyse]]
[[Category: Nppsfa]]
[[Category: Rsgi]]
[[Category: Unknown function]]