2ig9

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[[Image:2ig9.gif|left|200px]]
 
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{{Structure
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==Structure of a full-length Homoprotocatechuate 2,3-Dioxygenase from B. fuscum in a new spacegroup.==
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|PDB= 2ig9 |SIZE=350|CAPTION= <scene name='initialview01'>2ig9</scene>, resolution 1.90&Aring;
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<StructureSection load='2ig9' size='340' side='right'caption='[[2ig9]], [[Resolution|resolution]] 1.90&Aring;' scene=''>
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|SITE=
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== Structural highlights ==
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|LIGAND= <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>
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<table><tr><td colspan='2'>[[2ig9]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Brevibacterium_fuscum Brevibacterium fuscum]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2IG9 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2IG9 FirstGlance]. <br>
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|ACTIVITY= <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>
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</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.9&#8491;</td></tr>
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|GENE= hpcd ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=47914 Brevibacterium fuscum])
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<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><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>
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|DOMAIN=
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<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=2ig9 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2ig9 OCA], [https://pdbe.org/2ig9 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2ig9 RCSB], [https://www.ebi.ac.uk/pdbsum/2ig9 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2ig9 ProSAT]</span></td></tr>
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|RELATEDENTRY=[[2iga|2IGA]]
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</table>
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|RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2ig9 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2ig9 OCA], [http://www.ebi.ac.uk/pdbsum/2ig9 PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=2ig9 RCSB]</span>
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== Function ==
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}}
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[https://www.uniprot.org/uniprot/Q45135_9MICO Q45135_9MICO]
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== Evolutionary Conservation ==
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[[Image:Consurf_key_small.gif|200px|right]]
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Check<jmol>
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<jmolCheckbox>
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<scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/ig/2ig9_consurf.spt"</scriptWhenChecked>
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<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
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<text>to colour the structure by Evolutionary Conservation</text>
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</jmolCheckbox>
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</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=2ig9 ConSurf].
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<div style="clear:both"></div>
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<div style="background-color:#fffaf0;">
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== Publication Abstract from PubMed ==
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We report the structures of three intermediates in the O2 activation and insertion reactions of an extradiol ring-cleaving dioxygenase. A crystal of Fe2+-containing homoprotocatechuate 2,3-dioxygenase was soaked in the slow substrate 4-nitrocatechol in a low O2 atmosphere. The x-ray crystal structure shows that three different intermediates reside in different subunits of a single homotetrameric enzyme molecule. One of these is the key substrate-alkylperoxo-Fe2+ intermediate, which has been predicted, but not structurally characterized, in an oxygenase. The intermediates define the major chemical steps of the dioxygenase mechanism and point to a general mechanistic strategy for the diverse 2-His-1-carboxylate enzyme family.
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'''Structure of a full-length Homoprotocatechuate 2,3-Dioxygenase from B. fuscum in a new spacegroup.'''
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Crystal structures of Fe2+ dioxygenase superoxo, alkylperoxo, and bound product intermediates.,Kovaleva EG, Lipscomb JD Science. 2007 Apr 20;316(5823):453-7. PMID:17446402<ref>PMID:17446402</ref>
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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</div>
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<div class="pdbe-citations 2ig9" style="background-color:#fffaf0;"></div>
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==Overview==
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==See Also==
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We report the structures of three intermediates in the O2 activation and insertion reactions of an extradiol ring-cleaving dioxygenase. A crystal of Fe2+-containing homoprotocatechuate 2,3-dioxygenase was soaked in the slow substrate 4-nitrocatechol in a low O2 atmosphere. The x-ray crystal structure shows that three different intermediates reside in different subunits of a single homotetrameric enzyme molecule. One of these is the key substrate-alkylperoxo-Fe2+ intermediate, which has been predicted, but not structurally characterized, in an oxygenase. The intermediates define the major chemical steps of the dioxygenase mechanism and point to a general mechanistic strategy for the diverse 2-His-1-carboxylate enzyme family.
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*[[Dioxygenase 3D structures|Dioxygenase 3D structures]]
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== References ==
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==About this Structure==
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<references/>
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2IG9 is a [[Single protein]] structure of 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=2IG9 OCA].
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__TOC__
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</StructureSection>
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==Reference==
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Crystal structures of Fe2+ dioxygenase superoxo, alkylperoxo, and bound product intermediates., Kovaleva EG, Lipscomb JD, Science. 2007 Apr 20;316(5823):453-7. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/17446402 17446402]
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[[Category: 3,4-dihydroxyphenylacetate 2,3-dioxygenase]]
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[[Category: Brevibacterium fuscum]]
[[Category: Brevibacterium fuscum]]
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[[Category: Single protein]]
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[[Category: Large Structures]]
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[[Category: Kovaleva, E G.]]
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[[Category: Kovaleva EG]]
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[[Category: Lipscomb, J D.]]
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[[Category: Lipscomb JD]]
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[[Category: extradiol]]
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[[Category: fe(ii)]]
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[[Category: homoprotocatechuate]]
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[[Category: oxygenase]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Mar 31 03:43:57 2008''
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Current revision

Structure of a full-length Homoprotocatechuate 2,3-Dioxygenase from B. fuscum in a new spacegroup.

PDB ID 2ig9

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