1oe7
From Proteopedia
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| - | [[Image:1oe7.png|left|200px]] | ||
| - | + | ==28kDa glutathione S-transferase from Schistosoma haematobium== | |
| + | <StructureSection load='1oe7' size='340' side='right'caption='[[1oe7]], [[Resolution|resolution]] 1.80Å' scene=''> | ||
| + | == Structural highlights == | ||
| + | <table><tr><td colspan='2'>[[1oe7]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Schistosoma_haematobium Schistosoma haematobium]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1OE7 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1OE7 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]] 1.8Å</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></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=1oe7 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1oe7 OCA], [https://pdbe.org/1oe7 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1oe7 RCSB], [https://www.ebi.ac.uk/pdbsum/1oe7 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1oe7 ProSAT]</span></td></tr> | ||
| + | </table> | ||
| + | == Function == | ||
| + | [https://www.uniprot.org/uniprot/GST28_SCHHA GST28_SCHHA] Conjugation of reduced glutathione to a wide number of exogenous and endogenous hydrophobic electrophiles.<ref>PMID:12939136</ref> GST isoenzymes appear to play a central role in the parasite detoxification system. Other functions are also suspected including a role in increasing the solubility of haematin in the parasite gut.<ref>PMID:12939136</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/oe/1oe7_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=1oe7 ConSurf]. | ||
| + | <div style="clear:both"></div> | ||
| + | <div style="background-color:#fffaf0;"> | ||
| + | == Publication Abstract from PubMed == | ||
| + | Schistomiasis is a debilitating parasitic disease which affects 200 million people, causing life-threatening complications in 10% of the patients. This paper reports the crystal structure of the Schistosoma haematobium 28 kDa glutathione S-transferase, a multifunctional enzyme involved in host-parasite interactions and presently considered as a promising vaccine candidate against schistosomiasis. The structures of the GSH-free enzyme, as well as the partially (approximately 40%) and almost fully (approximately 80%) GSH-saturated enzyme, exhibit a unique feature, absent in previous GST structures, concerning the crucial and invariant Tyr10 side chain which occupies two alternative positions. The canonical conformer, which allows an H-bond to be formed between the side chain hydroxyl group and the activated thiolate of GSH, is somewhat less than 50% occupied. The new conformer, with the phenoxyl ring on the opposite side of the mobile loop connecting strand 1 and helix 1, is stabilized by a polar interaction with the guanidinium group of the conserved Arg21 side chain. The presence of two conformers of Tyr10 may provide a clue about clarifying the multiple catalytic functions of Sh28GST and might prove to be relevant for the design of specific antischistosomal drugs. The K(d) for GSH binding was determined by equilibrium fluorescence titrations to be approximately 3 microM and by stopped-flow rapid mixing experiments to be approximately 9 microM. The relatively tight binding of GSH by Sh28GST explains the residually bound GSH in the crystal and supports a possible role of GSH as a tightly bound cofactor involved in the catalytic mechanism for prostaglandin D(2) synthase activity. | ||
| - | + | Crystal structure of the 28 kDa glutathione S-transferase from Schistosoma haematobium.,Johnson KA, Angelucci F, Bellelli A, Herve M, Fontaine J, Tsernoglou D, Capron A, Trottein F, Brunori M Biochemistry. 2003 Sep 2;42(34):10084-94. PMID:12939136<ref>PMID:12939136</ref> | |
| - | + | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |
| - | + | </div> | |
| - | + | <div class="pdbe-citations 1oe7" style="background-color:#fffaf0;"></div> | |
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==See Also== | ==See Also== | ||
| - | *[[Glutathione S-transferase|Glutathione S-transferase]] | + | *[[Glutathione S-transferase 3D structures|Glutathione S-transferase 3D structures]] |
| - | + | == References == | |
| - | == | + | <references/> |
| - | < | + | __TOC__ |
| - | [[Category: | + | </StructureSection> |
| + | [[Category: Large Structures]] | ||
[[Category: Schistosoma haematobium]] | [[Category: Schistosoma haematobium]] | ||
| - | [[Category: Angelucci | + | [[Category: Angelucci F]] |
| - | [[Category: Johnson | + | [[Category: Johnson KA]] |
| - | [[Category: Tsernoglou | + | [[Category: Tsernoglou D]] |
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Current revision
28kDa glutathione S-transferase from Schistosoma haematobium
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