View source for 2fn0


==Crystal structure of Yersinia enterocolitica salicylate synthase (Irp9)==
<StructureSection load='2fn0' size='340' side='right'caption='[[2fn0]], [[Resolution|resolution]] 1.85&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[2fn0]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Yersinia_enterocolitica Yersinia enterocolitica]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2FN0 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2FN0 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]] 1.85&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ACT:ACETATE+ION'>ACT</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=PO4:PHOSPHATE+ION'>PO4</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=2fn0 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2fn0 OCA], [https://pdbe.org/2fn0 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2fn0 RCSB], [https://www.ebi.ac.uk/pdbsum/2fn0 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2fn0 ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/Q9X9I8_YEREN Q9X9I8_YEREN] 
== 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/fn/2fn0_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=2fn0 ConSurf].
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== Publication Abstract from PubMed ==
The salicylate synthase, Irp9, from Yersinia enterocolitica is involved in the biosynthesis of the siderophore yersiniabactin. It is a bifunctional enzyme that forms salicylate and pyruvate from chorismate and water via the intermediate isochorismate. Here we report the first crystal structure of Irp9 and also of its complex with the reaction products salicylate and pyruvate at 1.85 A and 2.1 A resolution, respectively. Like other members of the chorismate-utilizing enzyme family, e.g. the TrpE subunit of anthranilate synthase and the PabB subunit of 4-amino-4-deoxychorismate synthase, Irp9 has a complex alpha/beta fold. The crystal structure of Irp9 contains one molecule each of phosphate and acetate derived from the crystallization buffer. The Irp9-products complex structure was obtained by soaking chorismate into Irp9, demonstrating that the enzyme is still catalytically active in the crystal. Both structures contain Mg(2+) in the active site. There is no evidence of the allosteric tryptophan binding site found in TrpE and PabB. Mutagenesis of Glu240, His321 and Tyr372 provided some insight into the mechanism of the two transformations catalyzed by Irp9. Knowledge of the structure of Irp9 will guide the search for potent inhibitors of salicylate formation, and hence of bacterial iron uptake, which is directly related to the virulence of Yersinia.

Crystal structures of Yersinia enterocolitica salicylate synthase and its complex with the reaction products salicylate and pyruvate.,Kerbarh O, Chirgadze DY, Blundell TL, Abell C J Mol Biol. 2006 Mar 24;357(2):524-34. Epub 2006 Jan 11. PMID:16434053<ref>PMID:16434053</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Large Structures]]
[[Category: Yersinia enterocolitica]]
[[Category: Abell C]]
[[Category: Blundell TL]]
[[Category: Chirgadze DY]]
[[Category: Kerbarh O]]