2gpc: Difference between revisions
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< | ==The crystal structure of the enzyme Fe-superoxide dismutase from Trypanosoma cruzi== | ||
<StructureSection load='2gpc' size='340' side='right'caption='[[2gpc]], [[Resolution|resolution]] 1.90Å' scene=''> | |||
You may | == Structural highlights == | ||
<table><tr><td colspan='2'>[[2gpc]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Trypanosoma_cruzi Trypanosoma cruzi]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2GPC OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2GPC 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]] 1.9Å</td></tr> | |||
- | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=FE2:FE+(II)+ION'>FE2</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=OCS:CYSTEINESULFONIC+ACID'>OCS</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=2gpc FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2gpc OCA], [https://pdbe.org/2gpc PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2gpc RCSB], [https://www.ebi.ac.uk/pdbsum/2gpc PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2gpc ProSAT]</span></td></tr> | |||
</table> | |||
== Function == | |||
[https://www.uniprot.org/uniprot/Q4DI29_TRYCC Q4DI29_TRYCC] Destroys radicals which are normally produced within the cells and which are toxic to biological systems.[RuleBase:RU000414] | |||
== 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/gp/2gpc_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=2gpc ConSurf]. | |||
<div style="clear:both"></div> | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
Superoxide dismutases (SODs) are a crucial class of enzymes in the combat against intracellular free radical damage. They eliminate superoxide radicals by converting them into hydrogen peroxide and oxygen. In spite of their very different life cycles and infection strategies, the human parasites Plasmodium falciparum, Trypanosoma cruzi and Trypanosoma brucei are known to be sensitive to oxidative stress. Thus the parasite Fe-SODs have become attractive targets for novel drug development. Here we report the crystal structures of FeSODs from the trypanosomes T. brucei at 2.0 A and T. cruzi at 1.9 A resolution, and that from P. falciparum at a higher resolution (2.0 A) to that previously reported. The homodimeric enzymes are compared to the related human MnSOD with particular attention to structural aspects which are relevant for drug design. Although the structures possess a very similar overall fold, differences between the enzymes at the entrance to the channel which leads to the active site could be identified. These lead to a slightly broader and more positively charged cavity in the parasite enzymes. Furthermore, a statistical coupling analysis (SCA) for the whole Fe/MnSOD family reveals different patterns of residue coupling for Mn and Fe SODs, as well as for the dimeric and tetrameric states. In both cases, the statistically coupled residues lie adjacent to the conserved core surrounding the metal center and may be expected to be responsible for its fine tuning, leading to metal ion specificity. Proteins 2009. (c) 2009 Wiley-Liss, Inc. | |||
Systematic structural studies of iron superoxide dismutases from human parasites and a statistical coupling analysis of metal binding specificity.,Bachega JF, Navarro MV, Bleicher L, Bortoleto-Bugs RK, Dive D, Hoffmann P, Viscogliosi E, Garratt RC Proteins. 2009 Mar 3. PMID:19384994<ref>PMID:19384994</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
</div> | |||
<div class="pdbe-citations 2gpc" style="background-color:#fffaf0;"></div> | |||
== | |||
==See Also== | ==See Also== | ||
*[[Superoxide | *[[Superoxide dismutase 3D structures|Superoxide dismutase 3D structures]] | ||
== References == | |||
== | <references/> | ||
< | __TOC__ | ||
</StructureSection> | |||
[[Category: Large Structures]] | |||
[[Category: Trypanosoma cruzi]] | [[Category: Trypanosoma cruzi]] | ||
[[Category: Garratt | [[Category: Garratt RC]] | ||
[[Category: Navarro | [[Category: Navarro MVAS]] | ||
Latest revision as of 12:45, 30 August 2023
The crystal structure of the enzyme Fe-superoxide dismutase from Trypanosoma cruziThe crystal structure of the enzyme Fe-superoxide dismutase from Trypanosoma cruzi
Structural highlights
FunctionQ4DI29_TRYCC Destroys radicals which are normally produced within the cells and which are toxic to biological systems.[RuleBase:RU000414] Evolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMedSuperoxide dismutases (SODs) are a crucial class of enzymes in the combat against intracellular free radical damage. They eliminate superoxide radicals by converting them into hydrogen peroxide and oxygen. In spite of their very different life cycles and infection strategies, the human parasites Plasmodium falciparum, Trypanosoma cruzi and Trypanosoma brucei are known to be sensitive to oxidative stress. Thus the parasite Fe-SODs have become attractive targets for novel drug development. Here we report the crystal structures of FeSODs from the trypanosomes T. brucei at 2.0 A and T. cruzi at 1.9 A resolution, and that from P. falciparum at a higher resolution (2.0 A) to that previously reported. The homodimeric enzymes are compared to the related human MnSOD with particular attention to structural aspects which are relevant for drug design. Although the structures possess a very similar overall fold, differences between the enzymes at the entrance to the channel which leads to the active site could be identified. These lead to a slightly broader and more positively charged cavity in the parasite enzymes. Furthermore, a statistical coupling analysis (SCA) for the whole Fe/MnSOD family reveals different patterns of residue coupling for Mn and Fe SODs, as well as for the dimeric and tetrameric states. In both cases, the statistically coupled residues lie adjacent to the conserved core surrounding the metal center and may be expected to be responsible for its fine tuning, leading to metal ion specificity. Proteins 2009. (c) 2009 Wiley-Liss, Inc. Systematic structural studies of iron superoxide dismutases from human parasites and a statistical coupling analysis of metal binding specificity.,Bachega JF, Navarro MV, Bleicher L, Bortoleto-Bugs RK, Dive D, Hoffmann P, Viscogliosi E, Garratt RC Proteins. 2009 Mar 3. PMID:19384994[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
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