2pvz

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[[Image:2pvz.png|left|200px]]
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==Crystal structure of methylaconitate isomerase PrpF from Shewanella oneidensis==
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<StructureSection load='2pvz' size='340' side='right' caption='[[2pvz]], [[Resolution|resolution]] 1.97&Aring;' scene=''>
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== Structural highlights ==
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<table><tr><td colspan='2'>[[2pvz]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Shewanella_oneidensis Shewanella oneidensis]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2PVZ OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2PVZ FirstGlance]. <br>
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</td></tr><tr><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=EDO:1,2-ETHANEDIOL'>EDO</scene><br>
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<tr><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=CSD:3-SULFINOALANINE'>CSD</scene></td></tr>
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<tr><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[2pw0|2pw0]]</td></tr>
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<tr><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">PrpF ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=70863 Shewanella oneidensis])</td></tr>
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<tr><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2pvz FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2pvz OCA], [http://www.rcsb.org/pdb/explore.do?structureId=2pvz RCSB], [http://www.ebi.ac.uk/pdbsum/2pvz PDBsum]</span></td></tr>
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<table>
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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/pv/2pvz_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/chain_selection.php?pdb_ID=2ata 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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In bacteria, the dehydration of 2-methylcitrate to yield 2-methylaconitate in the 2-methylcitric acid cycle is catalyzed by a cofactor-less (PrpD) enzyme or by an aconitase-like (AcnD) enzyme. Bacteria that use AcnD also require the function of the PrpF protein, whose function was previously unknown. To gain insights into the function of PrpF, the three-dimensional crystal structure of the PrpF protein from the bacterium Shewanella oneidensis was solved at 2.0 A resolution. The protein fold of PrpF is strikingly similar to those of the non-PLP-dependent diaminopimelate epimerase from Haemophilus influenzae, a putative proline racemase from Brucella melitensis, and to a recently deposited structure of a hypothetical protein from Pseudomonas aeruginosa. Results from in vitro studies show that PrpF isomerizes trans-aconitate to cis-aconitate. It is proposed that PrpF catalysis of the cis-trans isomerization proceeds through a base-catalyzed proton abstraction coupled with a rotation about C2-C3 bond of 2-methylaconitate, and that residue Lys73 is critical for PrpF function. The newly identified function of PrpF as a non-PLP-dependent isomerase, together with the fact that PrpD-containing bacteria do not require PrpF, suggest that the isomer of 2-methylaconitate that serves as a substrate of aconitase must have the same stereochemistry as that synthesized by PrpD. From this, it follows that the 2-methylaconitate isomer generated by AcnD is not a substrate of aconitase, and that PrpF is required to generate the correct isomer. As a consequence, the isomerase activity of PrpF may now be viewed as an integral part of the 2-methylcitric acid cycle.
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{{STRUCTURE_2pvz| PDB=2pvz | SCENE= }}
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The three-dimensional crystal structure of the PrpF protein of Shewanella oneidensis complexed with trans-aconitate: insights into its biological function.,Garvey GS, Rocco CJ, Escalante-Semerena JC, Rayment I Protein Sci. 2007 Jul;16(7):1274-84. Epub 2007 Jun 13. PMID:17567742<ref>PMID:17567742</ref>
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===Crystal structure of methylaconitate isomerase PrpF from Shewanella oneidensis===
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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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{{ABSTRACT_PUBMED_17567742}}
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== References ==
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<references/>
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==About this Structure==
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__TOC__
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[[2pvz]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Shewanella_oneidensis Shewanella oneidensis]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2PVZ OCA].
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</StructureSection>
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==Reference==
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<ref group="xtra">PMID:017567742</ref><references group="xtra"/>
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[[Category: Shewanella oneidensis]]
[[Category: Shewanella oneidensis]]
[[Category: Garvey, G S.]]
[[Category: Garvey, G S.]]

Revision as of 18:57, 30 September 2014

Crystal structure of methylaconitate isomerase PrpF from Shewanella oneidensis

2pvz, resolution 1.97Å

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