View source for 2azq


==Crystal Structure of Catechol 1,2-Dioxygenase from Pseudomonas arvilla C-1==
<StructureSection load='2azq' size='340' side='right'caption='[[2azq]], [[Resolution|resolution]] 2.65&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[2azq]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/"bacillus_fluorescens_putidus"_flugge_1886 "bacillus fluorescens putidus" flugge 1886]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2AZQ OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2AZQ FirstGlance]. <br>
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=FE:FE+(III)+ION'>FE</scene>, <scene name='pdbligand=PCF:1,2-DIACYL-SN-GLYCERO-3-PHOSHOCHOLINE'>PCF</scene></td></tr>
<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Catechol_1,2-dioxygenase Catechol 1,2-dioxygenase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=1.13.11.1 1.13.11.1] </span></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=2azq FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2azq OCA], [http://pdbe.org/2azq PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2azq RCSB], [http://www.ebi.ac.uk/pdbsum/2azq PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=2azq ProSAT]</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/az/2azq_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=2azq ConSurf].
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== Publication Abstract from PubMed ==
Catechol 1,2-dioxygenase was first studied by Hayaishi and colleagues in 1950. In 1967, catechol 1,2-dioxygenase from Pseudomonas arvilla C-1 (PaCTD) was chosen as a model system for the catecholic intradiol dioxygenases due to its activity, stability and expression level. Here we report the 2.65 A structure of the betabeta isozyme of PaCTD. The structure supports the hypothesis first made by Vetting and Ohlendorf [The 1.8A crystal structure of catechol 1,2-dioxygenase reveals a novel hydrophobic helical zipper as a subunit linker, Struct. Fold. Des. 8 (2000) 429-440.] that the catechol 1,2-dioxygenases are lipid binding proteins. The 5 amino-terminal helices involved in dimerization and forming the lipid binding site are shown to be plastic in their positions and orientations. The sequence differences between the alpha and beta polypeptides are located at the part of the monomers distant from dimerization surface and thus permit the formation of the 3 isozymes (alphaalpha, alphabeta, and betabeta) of PaCTD. The reported inactivation by sulfhydryl-modifying reagents is explained by the structure. The 10-residue Helix F (residues 203-212) is proposed to be central in communicating between the lipid binding site and the active site.

Structure of catechol 1,2-dioxygenase from Pseudomonas arvilla.,Earhart CA, Vetting MW, Gosu R, Michaud-Soret I, Que L Jr, Ohlendorf DH Biochem Biophys Res Commun. 2005 Dec 9;338(1):198-205. Epub 2005 Sep 8. PMID:16171781<ref>PMID:16171781</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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<div class="pdbe-citations 2azq" style="background-color:#fffaf0;"></div>

==See Also==
*[[Dioxygenase 3D structures|Dioxygenase 3D structures]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Bacillus fluorescens putidus flugge 1886]]
[[Category: Catechol 1,2-dioxygenase]]
[[Category: Large Structures]]
[[Category: Earhart, C A]]
[[Category: Gosu, R]]
[[Category: Michaud-Soret, I]]
[[Category: Ohlendorf, D H]]
[[Category: Que, L]]
[[Category: Vetting, M W]]
[[Category: Catechol]]
[[Category: Ctd]]
[[Category: Dioxygenase]]
[[Category: Intradiol]]
[[Category: Isozyme]]
[[Category: Lipid]]
[[Category: Oxidoreductase]]