3vcp

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== Function ==
== Function ==
[https://www.uniprot.org/uniprot/Q92ZP9_RHIME Q92ZP9_RHIME]
[https://www.uniprot.org/uniprot/Q92ZP9_RHIME Q92ZP9_RHIME]
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<div style="background-color:#fffaf0;">
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== Publication Abstract from PubMed ==
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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>
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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</div>
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<div class="pdbe-citations 3vcp" style="background-color:#fffaf0;"></div>
==See Also==
==See Also==
*[[Dioxygenase 3D structures|Dioxygenase 3D structures]]
*[[Dioxygenase 3D structures|Dioxygenase 3D structures]]
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== References ==
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<references/>
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</StructureSection>
</StructureSection>

Current revision

The 2.2 Angstrom structure of Stc2 with proline bound in the active site

PDB ID 3vcp

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