View source for 2jfy


==Crystal structure of Helicobacter pylori glutamate racemase in complex with D-Glutamate==
<StructureSection load='2jfy' size='340' side='right'caption='[[2jfy]], [[Resolution|resolution]] 1.90&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[2jfy]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Helicobacter_pylori Helicobacter pylori]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2JFY OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2JFY 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]] 1.9&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=DGL:D-GLUTAMIC+ACID'>DGL</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=2jfy FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2jfy OCA], [https://pdbe.org/2jfy PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2jfy RCSB], [https://www.ebi.ac.uk/pdbsum/2jfy PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2jfy ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/MURI_HELPJ MURI_HELPJ] Provides the (R)-glutamate required for cell wall biosynthesis (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/jf/2jfy_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=2jfy ConSurf].
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== Publication Abstract from PubMed ==
Glutamate racemase is an enzyme essential to the bacterial cell wall biosynthesis pathway, and has therefore been considered as a target for antibacterial drug discovery. We characterized the glutamate racemases of several pathogenic bacteria using structural and biochemical approaches. Here we describe three distinct mechanisms of regulation for the family of glutamate racemases: allosteric activation by metabolic precursors, kinetic regulation through substrate inhibition, and D-glutamate recycling using a d-amino acid transaminase. In a search for selective inhibitors, we identified a series of uncompetitive inhibitors specifically targeting Helicobacter pylori glutamate racemase that bind to a cryptic allosteric site, and used these inhibitors to probe the mechanistic and dynamic features of the enzyme. These structural, kinetic and mutational studies provide insight into the physiological regulation of these essential enzymes and provide a basis for designing narrow-spectrum antimicrobial agents.

Exploitation of structural and regulatory diversity in glutamate racemases.,Lundqvist T, Fisher SL, Kern G, Folmer RH, Xue Y, Newton DT, Keating TA, Alm RA, de Jonge BL Nature. 2007 Jun 14;447(7146):817-22. PMID:17568739<ref>PMID:17568739</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 2jfy" style="background-color:#fffaf0;"></div>

==See Also==
*[[Glutamate racemase 3D structures|Glutamate racemase 3D structures]]
== References ==
<references/>
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</StructureSection>
[[Category: Helicobacter pylori]]
[[Category: Large Structures]]
[[Category: Lundqvist T]]