View source for 4brk


==Legionella pneumophila NTPDase1 N302Y variant crystal form III (closed) in complex with MG UMPPNP==
<StructureSection load='4brk' size='340' side='right'caption='[[4brk]], [[Resolution|resolution]] 1.50&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[4brk]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Legionella_pneumophila Legionella pneumophila]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4BRK OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4BRK 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]] 1.5&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=MES:2-(N-MORPHOLINO)-ETHANESULFONIC+ACID'>MES</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=UNP:5-O-[(R)-HYDROXY{[(S)-HYDROXY(PHOSPHONOAMINO)PHOSPHORYL]OXY}PHOSPHORYL]URIDINE'>UNP</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=4brk FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4brk OCA], [https://pdbe.org/4brk PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4brk RCSB], [https://www.ebi.ac.uk/pdbsum/4brk PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4brk ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/Q5ZUA2_LEGPH Q5ZUA2_LEGPH] 
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
In vertebrates, membrane-bound ecto-nucleoside triphosphate diphosphohydrolases (NTPDases) on the cell surface are responsible for signal conversion and termination in purinergic signaling by extracellular nucleotides. Here we present apo and complex structures of the rat NTPDase2 extracellular domain and Legionella pneumophila NTPDase1, including a high-resolution structure with a transition-state analog. Comparison of ATP and ADP binding modes shows how NTPDases engage the same catalytic site for hydrolysis of nucleoside triphosphates and diphosphates. We find that this dual specificity is achieved at the expense of base specificity. Structural and mutational studies indicate that a conserved active-site water is replaced by the phosphate product immediately after phosphoryl transfer. Partial base specificity for purines in LpNTPDase1 is based on a different intersubunit base binding site for pyrimidine bases. A comparison of the bacterial enzyme in six independent crystal forms shows that NTPDases can undergo a domain closure motion of at least 17 degrees .

Crystallographic Snapshots along the Reaction Pathway of Nucleoside Triphosphate Diphosphohydrolases.,Zebisch M, Krauss M, Schafer P, Lauble P, Strater N Structure. 2013 Jul 2. pii: S0969-2126(13)00200-1. doi:, 10.1016/j.str.2013.05.016. PMID:23830739<ref>PMID:23830739</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 4brk" style="background-color:#fffaf0;"></div>

==See Also==
*[[Ectonucleoside triphosphate diphosphohydrolase|Ectonucleoside triphosphate diphosphohydrolase]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Large Structures]]
[[Category: Legionella pneumophila]]
[[Category: Lauble P]]
[[Category: Schaefer P]]
[[Category: Straeter N]]
[[Category: Zebisch M]]