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1qxo

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[[Image:1qxo.jpg|left|200px]]<br /><applet load="1qxo" size="350" color="white" frame="true" align="right" spinBox="true"
 
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caption="1qxo, resolution 2.0&Aring;" />
 
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'''Crystal structure of Chorismate synthase complexed with oxidized FMN and EPSP'''<br />
 
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==Overview==
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==Crystal structure of Chorismate synthase complexed with oxidized FMN and EPSP==
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The crystal structure of chorismate synthase (CS) from Streptococcus pneumoniae has been solved to 2.0 A resolution in the presence of flavin mononucleotide (FMN) and the substrate 5-enolpyruvyl-3-shikimate phosphate (EPSP). CS catalyses the final step of the shikimate pathway and is a potential therapeutic target for the rational design of novel antibacterials, antifungals, antiprotozoals, and herbicides. CS is a tetramer with the monomer possessing a novel beta-alpha-beta fold. The interactions between the enzyme, cofactor, and substrate reveal the structural reasons underlying the unique catalytic mechanism and identify the amino acids involved. This structure provides the essential initial information necessary for the generation of novel anti-infective compounds by a structure-guided medicinal chemistry approach.
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<StructureSection load='1qxo' size='340' side='right'caption='[[1qxo]], [[Resolution|resolution]] 2.00&Aring;' scene=''>
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== Structural highlights ==
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<table><tr><td colspan='2'>[[1qxo]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Streptococcus_pneumoniae Streptococcus pneumoniae]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1QXO OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1QXO FirstGlance]. <br>
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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]] 2&#8491;</td></tr>
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<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=EDO:1,2-ETHANEDIOL'>EDO</scene>, <scene name='pdbligand=EPS:5-[(1-CARBOXYVINYL)OXY]-4-HYDROXY-3-(PHOSPHONOOXY)CYCLOHEX-1-ENE-1-CARBOXYLIC+ACID'>EPS</scene>, <scene name='pdbligand=FMN:FLAVIN+MONONUCLEOTIDE'>FMN</scene>, <scene name='pdbligand=MSE:SELENOMETHIONINE'>MSE</scene>, <scene name='pdbligand=NCO:COBALT+HEXAMMINE(III)'>NCO</scene></td></tr>
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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=1qxo FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1qxo OCA], [https://pdbe.org/1qxo PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1qxo RCSB], [https://www.ebi.ac.uk/pdbsum/1qxo PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1qxo ProSAT]</span></td></tr>
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</table>
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== Function ==
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[https://www.uniprot.org/uniprot/AROC_STRPN AROC_STRPN]
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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/qx/1qxo_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=1qxo ConSurf].
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<div style="clear:both"></div>
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==About this Structure==
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==See Also==
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1QXO is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Streptococcus_pneumoniae Streptococcus pneumoniae] with <scene name='pdbligand=NCO:'>NCO</scene>, <scene name='pdbligand=EDO:'>EDO</scene>, <scene name='pdbligand=FMN:'>FMN</scene> and <scene name='pdbligand=EPS:'>EPS</scene> as [http://en.wikipedia.org/wiki/ligands ligands]. Active as [http://en.wikipedia.org/wiki/Chorismate_synthase Chorismate synthase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=4.2.3.5 4.2.3.5] Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1QXO OCA].
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*[[Chorismate synthase|Chorismate synthase]]
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__TOC__
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==Reference==
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</StructureSection>
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The structure of chorismate synthase reveals a novel flavin binding site fundamental to a unique chemical reaction., Maclean J, Ali S, Structure. 2003 Dec;11(12):1499-511. PMID:[http://ispc.weizmann.ac.il//pmbin/getpm?pmid=14656434 14656434]
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[[Category: Large Structures]]
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[[Category: Chorismate synthase]]
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[[Category: Single protein]]
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[[Category: Streptococcus pneumoniae]]
[[Category: Streptococcus pneumoniae]]
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[[Category: Ali, S.]]
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[[Category: Ali S]]
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[[Category: Maclean, J.]]
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[[Category: Maclean J]]
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[[Category: EDO]]
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[[Category: EPS]]
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[[Category: FMN]]
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[[Category: NCO]]
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[[Category: anti-infective]]
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[[Category: beta-alpha-beta]]
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[[Category: flavoprotein]]
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[[Category: shikimate]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Feb 21 14:44:54 2008''
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Current revision

Crystal structure of Chorismate synthase complexed with oxidized FMN and EPSP

PDB ID 1qxo

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