View source for 5oe3


==Crystal structure of the N-terminal domain of PqsA in complex with anthraniloyl-AMP (crystal form 1)==
<StructureSection load='5oe3' size='340' side='right'caption='[[5oe3]], [[Resolution|resolution]] 1.43&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[5oe3]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Pseudomonas_aeruginosa_PAO1 Pseudomonas aeruginosa PAO1]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5OE3 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=5OE3 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]] 1.43&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=3UK:5-O-[(S)-[(2-AMINOBENZOYL)OXY](HYDROXY)PHOSPHORYL]ADENOSINE'>3UK</scene>, <scene name='pdbligand=ACT:ACETATE+ION'>ACT</scene>, <scene name='pdbligand=EDO:1,2-ETHANEDIOL'>EDO</scene>, <scene name='pdbligand=PEG:DI(HYDROXYETHYL)ETHER'>PEG</scene>, <scene name='pdbligand=PGE:TRIETHYLENE+GLYCOL'>PGE</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=5oe3 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5oe3 OCA], [https://pdbe.org/5oe3 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=5oe3 RCSB], [https://www.ebi.ac.uk/pdbsum/5oe3 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=5oe3 ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/PQSA_PSEAE PQSA_PSEAE] Catalyzes the formation of anthraniloyl-CoA, which is the priming step for entry into the Pseudomonas quinolone signal (PQS) biosynthetic pathway. Also active on a variety of aromatic substrates, including benzoate and chloro and fluoro derivatives of anthranilate.<ref>PMID:18083812</ref> <ref>PMID:18728009</ref> 
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== Publication Abstract from PubMed ==
Pseudomonas aeruginosa, a prevalent pathogen in nosocomial infections and a major burden in cystic fibrosis, uses three interconnected quorum-sensing systems to coordinate virulence processes. At variance with other Gram-negatives, one of these systems relies on alkylquinolones (Pseudomonas Quinolone Signal, PQS) and may hence be an attractive target for new anti-infectives. Here, we report crystal structures of the N-terminal domain of anthranilate-CoA ligase PqsA, the first enzyme of PQS biosynthesis, in complex with anthraniloyl-AMP and 6-fluoroanthraniloyl-AMP (6FABA-AMP) at 1.4 and 1.7 A resolution. We find that PqsA belongs to an unrecognized subfamily of anthranilate-CoA ligases that recognizes the amino group of anthranilate through a water-mediated hydrogen bond. The complex with 6FABA-AMP explains why 6FABA, an inhibitor of PQS biosynthesis, is a good substrate of PqsA. Together, our data may pave a way to new pathoblockers in P. aeruginosa infections.

Structures of the N-terminal domain of PqsA in complex with anthraniloyl- and 6-fluoroanthraniloyl-AMP: substrate activation in Pseudomonas Quinolone Signal (PQS) biosynthesis.,Witzgall F, Ewert W, Blankenfeldt W Chembiochem. 2017 Aug 18. doi: 10.1002/cbic.201700374. PMID:28834007<ref>PMID:28834007</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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<div class="pdbe-citations 5oe3" style="background-color:#fffaf0;"></div>
== References ==
<references/>
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</StructureSection>
[[Category: Large Structures]]
[[Category: Pseudomonas aeruginosa PAO1]]
[[Category: Blankenfeldt W]]
[[Category: Ewert W]]
[[Category: Witzgall F]]