3mps: Difference between revisions
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==Peroxide Bound Oxidized Rubrerythrin from Pyrococcus furiosus== | ==Peroxide Bound Oxidized Rubrerythrin from Pyrococcus furiosus== | ||
<StructureSection load='3mps' size='340' side='right' caption='[[3mps]], [[Resolution|resolution]] 2.00Å' scene=''> | <StructureSection load='3mps' size='340' side='right' caption='[[3mps]], [[Resolution|resolution]] 2.00Å' scene=''> | ||
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</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=FE:FE+(III)+ION'>FE</scene>, <scene name='pdbligand=FEO:MU-OXO-DIIRON'>FEO</scene>, <scene name='pdbligand=PEO:HYDROGEN+PEROXIDE'>PEO</scene></td></tr> | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=FE:FE+(III)+ION'>FE</scene>, <scene name='pdbligand=FEO:MU-OXO-DIIRON'>FEO</scene>, <scene name='pdbligand=PEO:HYDROGEN+PEROXIDE'>PEO</scene></td></tr> | ||
<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3pwf|3pwf]], [[3pza|3pza]], [[3qvd|3qvd]]</td></tr> | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3pwf|3pwf]], [[3pza|3pza]], [[3qvd|3qvd]]</td></tr> | ||
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3mps FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3mps OCA], [http://www.rcsb.org/pdb/explore.do?structureId=3mps RCSB], [http://www.ebi.ac.uk/pdbsum/3mps PDBsum]</span></td></tr> | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3mps FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3mps OCA], [http://pdbe.org/3mps PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=3mps RCSB], [http://www.ebi.ac.uk/pdbsum/3mps PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=3mps ProSAT]</span></td></tr> | ||
</table> | </table> | ||
<div style="background-color:#fffaf0;"> | <div style="background-color:#fffaf0;"> | ||
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | ||
</div> | </div> | ||
<div class="pdbe-citations 3mps" style="background-color:#fffaf0;"></div> | |||
==See Also== | ==See Also== | ||
Revision as of 16:35, 5 August 2016
Peroxide Bound Oxidized Rubrerythrin from Pyrococcus furiosusPeroxide Bound Oxidized Rubrerythrin from Pyrococcus furiosus
Structural highlights
Publication Abstract from PubMedHigh-resolution crystal structures of Pyrococcus furiosus rubrerythrin (PfRbr) in the resting (all-ferrous) state and at time points following exposure of the crystals to hydrogen peroxide are reported. This approach was possible because of the relativity slow turnover of PfRbr at room temperature. To this end, we were able to perform time-dependent peroxide treatment of the fully reduced enzyme, under strictly anaerobic conditions, in the crystalline state. In this work we demonstrate, for the first time, that turnover of a thermophilic rubrerythrin results in approximately 2-A movement of one iron atom in the diiron site from a histidine to a carboxylate ligand. These results confirm that, despite the domain-swapped architecture, the hyperthermophilic rubrerythrins also utilize the classic combination of iron sites together with redox-dependent iron toggling to selectively reduce hydrogen peroxide over dioxygen. In addition, we have identified previously unobserved intermediates in the reaction cycle and observed structural changes that may explain the enzyme precipitation observed for the all-iron form of PfRbr upon oxidation to the all-ferric state. A cryo-crystallographic time course for peroxide reduction by rubrerythrin from Pyrococcus furiosus.,Dillard BD, Demick JM, Adams MW, Lanzilotta WN J Biol Inorg Chem. 2011 Jun 7. PMID:21647777[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
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