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| <StructureSection load='3vcp' size='340' side='right'caption='[[3vcp]], [[Resolution|resolution]] 2.20Å' scene=''> | | <StructureSection load='3vcp' size='340' side='right'caption='[[3vcp]], [[Resolution|resolution]] 2.20Å' scene=''> |
| == Structural highlights == | | == Structural highlights == |
| <table><tr><td colspan='2'>[[3vcp]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Ensifer_meliloti Ensifer meliloti]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3VCP OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3VCP FirstGlance]. <br> | | <table><tr><td colspan='2'>[[3vcp]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Sinorhizobium_meliloti_1021 Sinorhizobium meliloti 1021]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3VCP OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3VCP FirstGlance]. <br> |
| </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=FE:FE+(III)+ION'>FE</scene>, <scene name='pdbligand=FES:FE2/S2+(INORGANIC)+CLUSTER'>FES</scene>, <scene name='pdbligand=PRO:PROLINE'>PRO</scene></td></tr> | | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.2Å</td></tr> |
| <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat"><div style='overflow: auto; max-height: 3em;'>[[3vca|3vca]]</div></td></tr> | | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=FE:FE+(III)+ION'>FE</scene>, <scene name='pdbligand=FES:FE2/S2+(INORGANIC)+CLUSTER'>FES</scene>, <scene name='pdbligand=PRO:PROLINE'>PRO</scene></td></tr> |
| <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">NP_435646, RA0400, SMa0751 ([https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=266834 Ensifer meliloti])</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=3vcp FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3vcp OCA], [https://pdbe.org/3vcp PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3vcp RCSB], [https://www.ebi.ac.uk/pdbsum/3vcp PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3vcp ProSAT]</span></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=3vcp FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3vcp OCA], [https://pdbe.org/3vcp PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3vcp RCSB], [https://www.ebi.ac.uk/pdbsum/3vcp PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3vcp ProSAT]</span></td></tr> |
| </table> | | </table> |
| <div style="background-color:#fffaf0;">
| | == Function == |
| == Publication Abstract from PubMed == | | [https://www.uniprot.org/uniprot/Q92ZP9_RHIME Q92ZP9_RHIME] |
| Herein, the structure resulting from in situ turnover in a chemically challenging quaternary ammonium oxidative demethylation reaction was captured via crystallographic analysis and analyzed via single-crystal spectroscopy. Crystal structures were determined for the Rieske-type monooxygenase, stachydrine demethylase, in the unliganded state (at 1.6 A resolution) and in the product complex (at 2.2 A resolution). The ligand complex was obtained from enzyme aerobically cocrystallized with the substrate stachydrine (N,N-dimethylproline). The ligand electron density in the complex was interpreted as proline, generated within the active site at 100 K by the absorption of X-ray photon energy and two consecutive demethylation cycles. The oxidation state of the Rieske iron-sulfur cluster was characterized by UV-visible spectroscopy throughout X-ray data collection in conjunction with resonance Raman spectra collected before and after diffraction data. Shifts in the absorption band wavelength and intensity as a function of absorbed X-ray dose demonstrated that the Rieske center was reduced by solvated electrons generated by X-ray photons; the kinetics of the reduction process differed dramatically for the liganded complex compared to unliganded demethylase, which may correspond to the observed turnover in the crystal.
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| Quaternary Ammonium Oxidative Demethylation: X-ray Crystallographic, Resonance Raman, and UV-Visible Spectroscopic Analysis of a Rieske-Type Demethylase.,Daughtry KD, Xiao Y, Stoner-Ma D, Cho E, Orville AM, Liu P, Allen KN J Am Chem Soc. 2012 Jan 26. PMID:22224443<ref>PMID:22224443</ref>
| | ==See Also== |
| | | *[[Dioxygenase 3D structures|Dioxygenase 3D structures]] |
| From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br>
| |
| </div>
| |
| <div class="pdbe-citations 3vcp" style="background-color:#fffaf0;"></div>
| |
| == References == | |
| <references/>
| |
| __TOC__ | | __TOC__ |
| </StructureSection> | | </StructureSection> |
| [[Category: Ensifer meliloti]]
| |
| [[Category: Large Structures]] | | [[Category: Large Structures]] |
| [[Category: Allen, K N]] | | [[Category: Sinorhizobium meliloti 1021]] |
| [[Category: Cho, E]] | | [[Category: Allen KN]] |
| [[Category: Daughtry, K D]] | | [[Category: Cho E]] |
| [[Category: Liu, P]] | | [[Category: Daughtry KD]] |
| [[Category: Orville, A M]] | | [[Category: Liu P]] |
| [[Category: Stoner-Ma, D]] | | [[Category: Orville AM]] |
| [[Category: Xiao, Y]] | | [[Category: Stoner-Ma D]] |
| [[Category: Mononuclear non-heme iron]]
| | [[Category: Xiao Y]] |
| [[Category: N-demethylase]]
| |
| [[Category: Oxidoreductase]]
| |
| [[Category: Rieske-type]]
| |