6z96
From Proteopedia
(Difference between revisions)
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==[4Fe-4S]-dependent thiouracil desulfidase TudS (DUF523Vcz) soaked with 4-thiouracil (12.65 keV, 7.125 keV (Fe-SAD) and 6.5 keV (S-SAD) data)== | ==[4Fe-4S]-dependent thiouracil desulfidase TudS (DUF523Vcz) soaked with 4-thiouracil (12.65 keV, 7.125 keV (Fe-SAD) and 6.5 keV (S-SAD) data)== | ||
| - | <StructureSection load='6z96' size='340' side='right'caption='[[6z96]]' scene=''> | + | <StructureSection load='6z96' size='340' side='right'caption='[[6z96]], [[Resolution|resolution]] 1.33Å' scene=''> |
== Structural highlights == | == Structural highlights == | ||
| - | <table><tr><td colspan='2'>Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6Z96 OCA]. For a <b>guided tour on the structure components</b> use [http://proteopedia.org/fgij/fg.htm?mol=6Z96 FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[6z96]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Uncultivated_bacterium Uncultivated bacterium]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6Z96 OCA]. For a <b>guided tour on the structure components</b> use [http://proteopedia.org/fgij/fg.htm?mol=6Z96 FirstGlance]. <br> |
| - | </td></tr><tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://proteopedia.org/fgij/fg.htm?mol=6z96 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6z96 OCA], [http://pdbe.org/6z96 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=6z96 RCSB], [http://www.ebi.ac.uk/pdbsum/6z96 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=6z96 ProSAT]</span></td></tr> | + | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=EDO:1,2-ETHANEDIOL'>EDO</scene>, <scene name='pdbligand=H2S:HYDROSULFURIC+ACID'>H2S</scene>, <scene name='pdbligand=PEG:DI(HYDROXYETHYL)ETHER'>PEG</scene>, <scene name='pdbligand=SF4:IRON/SULFUR+CLUSTER'>SF4</scene></td></tr> |
| + | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat"><div style='overflow: auto; max-height: 3em;'>[[6z92|6z92]], [[6z93|6z93]], [[6z94|6z94]], [[6z95|6z95]]</div></td></tr> | ||
| + | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://proteopedia.org/fgij/fg.htm?mol=6z96 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6z96 OCA], [http://pdbe.org/6z96 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=6z96 RCSB], [http://www.ebi.ac.uk/pdbsum/6z96 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=6z96 ProSAT]</span></td></tr> | ||
</table> | </table> | ||
| + | <div style="background-color:#fffaf0;"> | ||
| + | == Publication Abstract from PubMed == | ||
| + | We recently discovered a [Fe-S]-containing protein with in vivo thiouracil desulfidase activity called TudS. We report here the crystal structure of TudS, refined at 1.5 A resolution, which harbors a [4Fe-4S] cluster, bound by three cysteines only. Incubation of TudS crystals with 4-thiouracil trapped the cluster with a hydrosulfide ligand bound to the fourth non-protein-bonded iron, as established by the sulfur anomalous signal. This indicates that a [4Fe-5S] state of the cluster is a catalytic intermediate in the desulfuration reaction. Structural data and site-directed mutagenesis indicate that a water molecule is located next to the hydrosulfide ligand and to two catalytically important residues, Ser101 and Glu45. This information together with modeling studies allow us to propose a mechanism for the unprecedented nonredox enzymatic desulfuration of thiouracil, in which a [4Fe-4S] cluster binds and activates the sulfur atom of the substrate. | ||
| + | |||
| + | Structural evidence for a [4Fe-5S] intermediate in the non-redox desulfuration of thiouracil.,Zhou J, Pecqueur L, Aucynaite A, Fuchs J, Rutkiene R, Vaitekunas J, Meskys R, Boll M, Fontecave M, Urbonavicius J, Golinelli-Pimpaneau B Angew Chem Int Ed Engl. 2020 Sep 15. doi: 10.1002/anie.202011211. PMID:32929873<ref>PMID:32929873</ref> | ||
| + | |||
| + | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | ||
| + | </div> | ||
| + | <div class="pdbe-citations 6z96" style="background-color:#fffaf0;"></div> | ||
| + | == References == | ||
| + | <references/> | ||
__TOC__ | __TOC__ | ||
</StructureSection> | </StructureSection> | ||
[[Category: Large Structures]] | [[Category: Large Structures]] | ||
| - | [[Category: Fontecave M]] | + | [[Category: Uncultivated bacterium]] |
| - | [[Category: Golinelli-Pimpaneau B]] | + | [[Category: Fontecave, M]] |
| - | [[Category: Pecqueur L]] | + | [[Category: Golinelli-Pimpaneau, B]] |
| - | [[Category: Zhou J]] | + | [[Category: Pecqueur, L]] |
| + | [[Category: Zhou, J]] | ||
| + | [[Category: Desulfuration]] | ||
| + | [[Category: Iron-sulfur cluster]] | ||
| + | [[Category: Sulfurtransferase]] | ||
| + | [[Category: Thiouracil]] | ||
| + | [[Category: Transferase]] | ||
Revision as of 07:00, 30 December 2020
[4Fe-4S]-dependent thiouracil desulfidase TudS (DUF523Vcz) soaked with 4-thiouracil (12.65 keV, 7.125 keV (Fe-SAD) and 6.5 keV (S-SAD) data)
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