View source for 3isz


==Crystal structure of mono-zinc form of succinyl-diaminopimelate desuccinylase from Haemophilus influenzae==
<StructureSection load='3isz' size='340' side='right'caption='[[3isz]], [[Resolution|resolution]] 2.00&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[3isz]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Haemophilus_influenzae_Rd_KW20 Haemophilus influenzae Rd KW20]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3ISZ OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3ISZ 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&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=SO4:SULFATE+ION'>SO4</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=3isz FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3isz OCA], [https://pdbe.org/3isz PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3isz RCSB], [https://www.ebi.ac.uk/pdbsum/3isz PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3isz ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/DAPE_HAEIN DAPE_HAEIN] Catalyzes the hydrolysis of N-succinyl-L,L-diaminopimelic acid (SDAP), forming succinate and LL-2,6-diaminoheptanedioate (DAP), an intermediate involved in the bacterial biosynthesis of lysine and meso-diaminopimelic acid, an essential component of bacterial cell walls. It can only hydrolyze L,L-N-succinyl-diaminopimelic acid (L,L-SDAP) and is inactive toward D,L-, L,D-, and D,D-SDAP.<ref>PMID:12962500</ref> <ref>PMID:16421726</ref> <ref>PMID:18712420</ref> 
== 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/is/3isz_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=3isz ConSurf].
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== Publication Abstract from PubMed ==
Biosynthesis of lysine and meso-diaminopimelic acid in bacteria provides essential components for protein synthesis and construction of the bacterial peptidoglycan cell wall. The dapE operon enzymes synthesize both meso-diaminopimelic acid and lysine and, therefore, represent potential targets for novel antibacterials. The dapE-encoded N-succinyl-L,L-diaminopimelic acid desuccinylase functions in a late step of the pathway and converts N-succinyl-L,L-diaminopimelic acid to L,L-diaminopimelic acid and succinate. Deletion of the dapE gene is lethal to Helicobacter pylori and Mycobacterium smegmatis, indicating that DapE's are essential for cell growth and proliferation. Since there are no similar pathways in humans, inhibitors that target DapE may have selective toxicity against only bacteria. A major limitation in developing antimicrobial agents that target DapE has been the lack of structural information. Herein, we report the high-resolution X-ray crystal structures of the DapE from Haemophilus influenzae with one and two zinc ions bound in the active site, respectively. These two forms show different activity. Based on these newly determined structures, we propose a revised catalytic mechanism of peptide bond cleavage by DapE enzymes. These structures provide important insight into catalytic mechanism of DapE enzymes as well as a structural foundation that is critical for the rational design of DapE inhibitors.

Structural basis for catalysis by the mono- and dimetalated forms of the dapE-encoded N-succinyl-L,L-diaminopimelic acid desuccinylase.,Nocek BP, Gillner DM, Fan Y, Holz RC, Joachimiak A J Mol Biol. 2010 Apr 2;397(3):617-26. Epub 2010 Feb 4. PMID:20138056<ref>PMID:20138056</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 3isz" style="background-color:#fffaf0;"></div>
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Haemophilus influenzae Rd KW20]]
[[Category: Large Structures]]
[[Category: Gillner DM]]
[[Category: Holz RC]]
[[Category: Joachimiak A]]
[[Category: Nocek BP]]