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[[Image:3ecj.png|left|200px]]
==Structure of E323L mutant of Homoprotocatechuate 2,3-Dioxygenase from Brevibacterium fuscum at 1.65A resolution==
<StructureSection load='3ecj' size='340' side='right' caption='[[3ecj]], [[Resolution|resolution]] 1.65&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[3ecj]] is a 4 chain structure with sequence from [http://en.wikipedia.org/wiki/Brevibacterium_fuscum Brevibacterium fuscum]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3ECJ OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3ECJ FirstGlance]. <br>
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=FE2:FE+(II)+ION'>FE2</scene>, <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene></td></tr>
<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3eck|3eck]]</td></tr>
<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">hpcd ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=47914 Brevibacterium fuscum])</td></tr>
<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/3,4-dihydroxyphenylacetate_2,3-dioxygenase 3,4-dihydroxyphenylacetate 2,3-dioxygenase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=1.13.11.15 1.13.11.15] </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=3ecj FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3ecj OCA], [http://www.rcsb.org/pdb/explore.do?structureId=3ecj RCSB], [http://www.ebi.ac.uk/pdbsum/3ecj PDBsum]</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/ec/3ecj_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 ==
The reactive oxy intermediate of the catalytic cycle of extradiol aromatic ring-cleaving dioxygenases is formed by binding the catecholic substrate and O2 in adjacent ligand positions of the active site metal [usually Fe(II)]. This intermediate and the following Fe(II)-alkylperoxo intermediate resulting from oxygen attack on the substrate have been previously characterized in a crystal of homoprotocatechuate 2,3-dioxygenase (HPCD). Here a subsequent intermediate in which the O-O bond is broken to yield a gem diol species is structurally characterized. This new intermediate is stabilized in the crystal by using the alternative substrate, 4-sulfonylcatechol, and the Glu323Leu variant of HPCD, which alters the crystal packing.


{{STRUCTURE_3ecj|  PDB=3ecj  |  SCENE=  }}
Intermediate in the O-O bond cleavage reaction of an extradiol dioxygenase.,Kovaleva EG, Lipscomb JD Biochemistry. 2008 Oct 28;47(43):11168-70. Epub 2008 Oct 1. PMID:18826259<ref>PMID:18826259</ref>


===Structure of E323L mutant of Homoprotocatechuate 2,3-Dioxygenase from Brevibacterium fuscum at 1.65A resolution===
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>


{{ABSTRACT_PUBMED_18826259}}
==See Also==
 
*[[Dioxygenase|Dioxygenase]]
==About this Structure==
== References ==
[[3ecj]] is a 4 chain structure with sequence from [http://en.wikipedia.org/wiki/Brevibacterium_fuscum Brevibacterium fuscum]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3ECJ OCA].
<references/>
 
__TOC__
==Reference==
</StructureSection>
<ref group="xtra">PMID:018826259</ref><references group="xtra"/>
[[Category: 3,4-dihydroxyphenylacetate 2,3-dioxygenase]]
[[Category: 3,4-dihydroxyphenylacetate 2,3-dioxygenase]]
[[Category: Brevibacterium fuscum]]
[[Category: Brevibacterium fuscum]]
[[Category: Kovaleva, E G.]]
[[Category: Kovaleva, E G]]
[[Category: Lipscomb, J D.]]
[[Category: Lipscomb, J D]]
[[Category: Crystal packing]]
[[Category: Crystal packing]]
[[Category: Dioxygenase]]
[[Category: Dioxygenase]]