View source for 2ier


==Crystal Structure of Aquifex aeolicus LpxC Complexed with Uridine 5'-Diphosphate==
<StructureSection load='2ier' size='340' side='right'caption='[[2ier]], [[Resolution|resolution]] 2.70&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[2ier]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Aquifex_aeolicus Aquifex aeolicus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2IER OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2IER 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]] 2.7&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=PLM:PALMITIC+ACID'>PLM</scene>, <scene name='pdbligand=UDP:URIDINE-5-DIPHOSPHATE'>UDP</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</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=2ier FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2ier OCA], [https://pdbe.org/2ier PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2ier RCSB], [https://www.ebi.ac.uk/pdbsum/2ier PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2ier ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/LPXC_AQUAE LPXC_AQUAE] Involved in the biosynthesis of lipid A, a phosphorylated glycolipid that anchors the lipopolysaccharide to the outer membrane of the cell (By similarity).
== 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/ie/2ier_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=2ier ConSurf].
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== Publication Abstract from PubMed ==
LpxC is a zinc metalloenzyme that catalyzes the first committed step in the biosynthesis of lipid A, a vital component of the outer membrane of Gram-negative bacteria. Accordingly, the inhibition of LpxC is an attractive strategy for the treatment of Gram-negative bacterial infections. Here, we report the 2.7 A resolution X-ray crystal structure of LpxC from Aquifex aeolicus complexed with uridine 5'-diphosphate (UDP), and the 3.1 A resolution structure of LpxC complexed with pyrophosphate. The X-ray crystal structure of the LpxC-UDP complex provides the first view of interactions likely to be exploited by the substrate UDP group in the "basic patch" of the active site. The diphosphate group of UDP makes hydrogen bond interactions with strictly conserved residue K239 as well as solvent molecules. The ribose moiety of UDP interacts with partially conserved residue E197. The UDP uracil group hydrogen bonds with both the backbone NH group and the backbone carbonyl group of E160, and with the backbone NH group of K162 through an intervening water molecule. Finally, the alpha-phosphate and uracil groups of UDP interact with R143 and R262 through intervening water molecules. The structure of LpxC complexed with pyrophosphate reveals generally similar intermolecular interactions in the basic patch. Unexpectedly, diphosphate binding in both complexes is accompanied by coordination to an additional zinc ion, resulting in the identification of a new metal-binding site termed the E-site. The structures of the LpxC-UDP and LpxC-pyrophosphate complexes provide new insights with regard to substrate recognition in the basic patch and metal ion coordination in the active site of LpxC.

Binding of uridine 5'-diphosphate in the "basic patch" of the zinc deacetylase LpxC and implications for substrate binding.,Gennadios HA, Christianson DW Biochemistry. 2006 Dec 26;45(51):15216-23. Epub 2006 Nov 30. PMID:17176043<ref>PMID:17176043</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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==See Also==
*[[UDP-3-O-acyl-N-acetylglucosamine deacetylase|UDP-3-O-acyl-N-acetylglucosamine deacetylase]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Aquifex aeolicus]]
[[Category: Large Structures]]
[[Category: Christianson DW]]
[[Category: Gennadios HA]]