View source for 1pzs


==Crystal Structure of a Cu-Zn Superoxide Dismutase from Mycobacterium tuberculosis at 1.63 resolution==
<StructureSection load='1pzs' size='340' side='right'caption='[[1pzs]], [[Resolution|resolution]] 1.63&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[1pzs]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Mycobacterium_tuberculosis Mycobacterium tuberculosis]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1PZS OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1PZS 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]] 1.63&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CU:COPPER+(II)+ION'>CU</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=1pzs FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1pzs OCA], [https://pdbe.org/1pzs PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1pzs RCSB], [https://www.ebi.ac.uk/pdbsum/1pzs PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1pzs ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/SODC_MYCTU SODC_MYCTU] Destroys radicals which are normally produced within the cells and which are toxic to biological systems. May play a role in favoring mycobacterial survival in phagocytes (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/pz/1pzs_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=1pzs ConSurf].
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== Publication Abstract from PubMed ==
The sodC-encoded Mycobacterium tuberculosis superoxide dismutase (SOD) shows high sequence homology to other members of the copper/zinc-containing SOD family. Its three-dimensional structure is reported here, solved by x-ray crystallography at 1.63-A resolution. Metal analyses of the recombinant protein indicate that the native form of the enzyme lacks the zinc ion, which has a very important structural and functional role in all other known enzymes of this class. The absence of zinc within the active site is due to significant rearrangements in the zinc subloop, including deletion or mutation of the metal ligands His115 and His123. Nonetheless, the enzyme has a catalytic rate close to the diffusion limit; and unlike all other copper/zinc-containing SODs devoid of zinc, the geometry of the copper site is pH-independent. The protein shows a novel dimer interface characterized by a long and rigid loop, which confers structural stability to the enzyme. As the survival of bacterial pathogens within their host critically depends on their ability to recruit zinc in highly competitive environments, we propose that the observed structural rearrangements are required to build up a zinc-independent but fully active and stable copper-containing SOD.

Unique features of the sodC-encoded superoxide dismutase from Mycobacterium tuberculosis, a fully functional copper-containing enzyme lacking zinc in the active site.,Spagnolo L, Toro I, D'Orazio M, O'Neill P, Pedersen JZ, Carugo O, Rotilio G, Battistoni A, Djinovic-Carugo K J Biol Chem. 2004 Aug 6;279(32):33447-55. Epub 2004 May 23. PMID:15155722<ref>PMID:15155722</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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==See Also==
*[[Superoxide dismutase 3D structures|Superoxide dismutase 3D structures]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Large Structures]]
[[Category: Mycobacterium tuberculosis]]
[[Category: Djinovic-Carugo K]]
[[Category: Spagnolo L]]
[[Category: Toro I]]