View source for 2wyo


==Trypanosoma brucei glutathione synthetase==
<StructureSection load='2wyo' size='340' side='right'caption='[[2wyo]], [[Resolution|resolution]] 3.15&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[2wyo]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Trypanosoma_brucei Trypanosoma brucei]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2WYO OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2WYO 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]] 3.15&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=GSH:GLUTATHIONE'>GSH</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</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=2wyo FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2wyo OCA], [https://pdbe.org/2wyo PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2wyo RCSB], [https://www.ebi.ac.uk/pdbsum/2wyo PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2wyo ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/Q57UN0_TRYB2 Q57UN0_TRYB2] 
== 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/wy/2wyo_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=2wyo ConSurf].
<div style="clear:both"></div>
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== Publication Abstract from PubMed ==
Glutathione synthetase catalyses the synthesis of the low molecular mass thiol glutathione from l-gamma-glutamyl-l-cysteine and glycine. We report the crystal structure of the dimeric enzyme from Trypanosoma brucei in complex with the product glutathione. The enzyme belongs to the ATP-grasp family, a group of enzymes known to undergo conformational changes upon ligand binding. The T. brucei enzyme crystal structure presents two dimers in the asymmetric unit. The structure reveals variability in the order and position of a small domain, which forms a lid for the active site and serves to capture conformations likely to exist during the catalytic cycle. Comparisons with orthologous enzymes, in particular from Homo sapiens and Saccharomyces cerevisae, indicate a high degree of sequence and structure conservation in part of the active site. Structural differences that are observed between the orthologous enzymes are assigned to different ligand binding states since key residues are conserved. This suggests that the molecular determinants of ligand recognition and reactivity are highly conserved across species. We conclude that it would be difficult to target the parasite enzyme in preference to the host enzyme and therefore glutathione synthetase may not be a suitable target for antiparasitic drug discovery.

Structure of Trypanosoma brucei glutathione synthetase: domain and loop alterations in the catalytic cycle of a highly conserved enzyme.,Fyfe PK, Alphey MS, Hunter WN Mol Biochem Parasitol. 2010 Apr;170(2):93-9. Epub 2010 Jan 4. PMID:20045436<ref>PMID:20045436</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 2wyo" style="background-color:#fffaf0;"></div>

==See Also==
*[[Glutathione synthetase|Glutathione synthetase]]
== References ==
<references/>
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</StructureSection>
[[Category: Large Structures]]
[[Category: Trypanosoma brucei]]
[[Category: Alphey MS]]
[[Category: Fyfe PK]]
[[Category: Hunter WN]]