View source for 3aar


==Crystal structure of Lp1NTPDase from Legionella pneumophila in complex with AMPPNP==
<StructureSection load='3aar' size='340' side='right'caption='[[3aar]], [[Resolution|resolution]] 1.65&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[3aar]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Legionella_pneumophila_subsp._pneumophila_str._Philadelphia_1 Legionella pneumophila subsp. pneumophila str. Philadelphia 1]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3AAR OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3AAR 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]] 1.65&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ANP:PHOSPHOAMINOPHOSPHONIC+ACID-ADENYLATE+ESTER'>ANP</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=3aar FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3aar OCA], [https://pdbe.org/3aar PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3aar RCSB], [https://www.ebi.ac.uk/pdbsum/3aar PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3aar ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/Q5ZUA2_LEGPH Q5ZUA2_LEGPH] 
== 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/aa/3aar_consurf.spt"</scriptWhenChecked>
    <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview03.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=3aar ConSurf].
<div style="clear:both"></div>
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== Publication Abstract from PubMed ==
Many pathogenic bacteria have sophisticated mechanisms to interfere with the mammalian immune response. These include the disruption of host extracellular ATP levels that, in humans, is tightly regulated by the nucleoside triphosphate diphosphohydrolase family (NTPDases). NTPDases are found almost exclusively in eukaryotes, the notable exception being their presence in some pathogenic prokaryotes. To address the function of bacterial NTPDases, we describe the structures of an NTPDase from the pathogen Legionella pneumophila (Lpg1905/Lp1NTPDase) in its apo state and in complex with the ATP analog AMPPNP and the subtype-specific NTPDase inhibitor ARL 67156. Lp1NTPDase is structurally and catalytically related to eukaryotic NTPDases and the structure provides a basis for NTPDase-specific inhibition. Furthermore, we demonstrate that the activity of Lp1NTPDase correlates directly with intracellular replication of Legionella within macrophages. Collectively, these findings provide insight into the mechanism of this enzyme and highlight its role in host-pathogen interactions.

Crystal structure of a Legionella pneumophila ecto -triphosphate diphosphohydrolase, a structural and functional homolog of the eukaryotic NTPDases.,Vivian JP, Riedmaier P, Ge H, Le Nours J, Sansom FM, Wilce MC, Byres E, Dias M, Schmidberger JW, Cowan PJ, d'Apice AJ, Hartland EL, Rossjohn J, Beddoe T Structure. 2010 Feb 10;18(2):228-38. PMID:20159467<ref>PMID:20159467</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 3aar" style="background-color:#fffaf0;"></div>

==See Also==
*[[Ectonucleoside triphosphate diphosphohydrolase|Ectonucleoside triphosphate diphosphohydrolase]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Large Structures]]
[[Category: Legionella pneumophila subsp. pneumophila str. Philadelphia 1]]
[[Category: Beddoe T]]
[[Category: Ge H]]
[[Category: Rossjohn J]]
[[Category: Vivian JP]]