2iga

From Proteopedia

(Difference between revisions)
Jump to: navigation, search
m (Protected "2iga" [edit=sysop:move=sysop])
Current revision (10:10, 30 August 2023) (edit) (undo)
 
(5 intermediate revisions not shown.)
Line 1: Line 1:
-
[[Image:2iga.png|left|200px]]
 
-
{{STRUCTURE_2iga| PDB=2iga | SCENE= }}
+
==Structure of Homoprotocatechuate 2,3-Dioxygenase from B. fuscum in complex with reactive intermediates formed via in crystallo reaction with 4-nitrocatechol at low oxygen concentrations.==
 +
<StructureSection load='2iga' size='340' side='right'caption='[[2iga]], [[Resolution|resolution]] 1.95&Aring;' scene=''>
 +
== Structural highlights ==
 +
<table><tr><td colspan='2'>[[2iga]] 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=2IGA OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2IGA FirstGlance]. <br>
 +
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.95&#8491;</td></tr>
 +
<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>, <scene name='pdbligand=OXY:OXYGEN+MOLECULE'>OXY</scene>, <scene name='pdbligand=XX2:1-KETO,2-HYDROXY,4-NITROBENZENE,+1+ELECTRON+OXIDIZED'>XX2</scene>, <scene name='pdbligand=XX3:(1S)-1-HYDROPEROXY-1-HYDROXY-2-KETO-5-NITROCYCLOHEXA-3,5-DIENE'>XX3</scene>, <scene name='pdbligand=XXP:2-KETO,5-NITRO,6-HYDROXY-3,5-HEXADIENOIC+ACID'>XXP</scene></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=2iga FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2iga OCA], [https://pdbe.org/2iga PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2iga RCSB], [https://www.ebi.ac.uk/pdbsum/2iga PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2iga ProSAT]</span></td></tr>
 +
</table>
 +
== Function ==
 +
[https://www.uniprot.org/uniprot/Q45135_9MICO Q45135_9MICO]
 +
== 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/ig/2iga_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=2iga ConSurf].
 +
<div style="clear:both"></div>
 +
<div style="background-color:#fffaf0;">
 +
== Publication Abstract from PubMed ==
 +
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.
-
===Structure of Homoprotocatechuate 2,3-Dioxygenase from B. fuscum in complex with reactive intermediates formed via in crystallo reaction with 4-nitrocatechol at low oxygen concentrations.===
+
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>
-
{{ABSTRACT_PUBMED_17446402}}
+
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
 +
</div>
 +
<div class="pdbe-citations 2iga" style="background-color:#fffaf0;"></div>
-
==About this Structure==
+
==See Also==
-
[[2iga]] 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=2IGA OCA].
+
*[[Dioxygenase 3D structures|Dioxygenase 3D structures]]
-
 
+
== References ==
-
==Reference==
+
<references/>
-
<ref group="xtra">PMID:017446402</ref><references group="xtra"/>
+
__TOC__
-
[[Category: 3,4-dihydroxyphenylacetate 2,3-dioxygenase]]
+
</StructureSection>
[[Category: Brevibacterium fuscum]]
[[Category: Brevibacterium fuscum]]
-
[[Category: Kovaleva, E G.]]
+
[[Category: Large Structures]]
-
[[Category: Lipscomb, J D.]]
+
[[Category: Kovaleva EG]]
-
[[Category: Alkylperoxo intermediate]]
+
[[Category: Lipscomb JD]]
-
[[Category: Extradiol]]
+
-
[[Category: Homoprotocatechuate]]
+
-
[[Category: Open-ring product]]
+
-
[[Category: Oxidoreductase]]
+
-
[[Category: Oxygenase]]
+
-
[[Category: Substrate-semiquinone]]
+

Current revision

Structure of Homoprotocatechuate 2,3-Dioxygenase from B. fuscum in complex with reactive intermediates formed via in crystallo reaction with 4-nitrocatechol at low oxygen concentrations.

PDB ID 2iga

Drag the structure with the mouse to rotate

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/2iga"
Personal tools