Výsledky vyhledávání - "Gloria Villar-Acevedo"

Formation of a Reactive, Alkyl Thiolate-Ligated FeIII-Superoxo Intermediate Derived from Dioxygen

Autor: Julie A. Kovacs, Maike N. Blakely, Gloria Villar-Acevedo, Penny Chaau Yan Poon, Maksym A. Dedushko

Publikováno v: Journal of the American Chemical Society. 141:1867-1870

Herein, we describe an alkyl thiolate-ligated iron complex that reacts with dioxygen to form an unprecedented example of an iron superoxo (O2•–) intermediate, [FeIII(S2Me2N3(Pr,Pr))(O2)] (4), which...

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e323a9fec8f59f162c9c2e8ca8f55e38
https://doi.org/10.1021/jacs.8b12670

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Formation of a Reactive, Alkyl Thiolate-Ligated Fe

Autor: Maike N, Blakely, Maksym A, Dedushko, Penny Chaau, Yan Poon, Gloria, Villar-Acevedo, Julie A, Kovacs

Publikováno v: Journal of the American Chemical Society. 141(5)

Herein, we describe an alkyl thiolate-ligated iron complex that reacts with dioxygen to form an unprecedented example of an iron superoxo (O(2)(•−)) intermediate, [Fe(III)(S(2)(Me2)N(3)(Pr,Pr))(O(2))] (4), which is capable of cleaving strong C–

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::76ee1e9518735d969b4bb39b2f52f4d3
https://pubmed.ncbi.nlm.nih.gov/30661357

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Metal-Assisted Oxo Atom Addition to an Fe(III) Thiolate

Autor: Julian A. Rees, Julie A. Kovacs, Maike N. Blakely, Gloria Villar-Acevedo, Abbie S. Ganas, Erin M. Hanada, Priscilla Lugo-Mas, Werner Kaminsky

Publikováno v: Journal of the American Chemical Society, vol 139, iss 1

Cysteinate oxygenation is intimately tied to the function of both cysteine dioxygenases (CDOs) and nitrile hydratases (NHases), and yet the mechanisms by which sulfurs are oxidized by these enzymes are unknown, in part because intermediates have yet

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::307c3457f7896606f217d234bf4f705a
https://escholarship.org/uc/item/5mt2g7r6

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S K-Edge X-Ray Absorption Spectroscopy and Density Functional Theory Studies of High and Low Spin {FeNO}7 Thiolate Complexes: Exchange Stabilization of Electron Delocalization in {FeNO}7 and {FeO2}8

Autor: Gloria Villar-Acevedo, Britt Hedman, Lei V. Liu, Ning Sun, Julie A. Kovacs, Edward I. Solomon, Marcetta Y. Darensbourg, Keith O. Hodgson, Abhishek Dey

Publikováno v: Inorganic Chemistry. 50:427-436

S K-edge X-ray absorption spectroscopy (XAS) is a direct experimental probe of metal ion electronic structure as the pre-edge energy reflects its oxidation state, and the energy splitting pattern of the pre-edge transitions reflects its spin state. T

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::12aa16d9d1feada4bf1440adc1e5de5d
https://doi.org/10.1021/ic1006378

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Comparison of structurally-related alkoxide, amine, and thiolate-ligated MII (M=Fe, Co) complexes: The influence of thiolates on the properties of biologically relevant metal complexes

Autor: Lisa M. Brines, Julie A. Kovacs, Priscilla Lugo-Mas, Werner Kaminsky, Jason B. Benedict, Terutaka T. Kitagawa, Rodney D. Swartz, Gloria Villar-Acevedo

Publikováno v: Inorganica Chimica Acta. 361:1070-1078

Mechanistic pathways of metalloenzymes are controlled by the metal ion’s electronic and magnetic properties, which are tuned by the coordinated ligands. The functional advantage gained by incorporating cysteinates into the active site of non-heme i

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9021de536cec535f78f7744a5019edec
https://doi.org/10.1016/j.ica.2007.07.038

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Influence of thiolate ligands on reductive N-O bond activation. Probing the O2(-) binding site of a biomimetic superoxide reductase analogue and examining the proton-dependent reduction of nitrite

Autor: Elaine Nam, Gloria Villar-Acevedo, Werner Kaminsky, Sarah B. Fitch, John Freudenthal, Jason B. Benedict, Julie A. Kovacs

Publikováno v: Journal of the American Chemical Society. 133(5)

Nitric oxide (NO) is frequently used to probe the substrate-binding site of "spectroscopically silent" non-heme Fe(2+) sites of metalloenzymes, such as superoxide reductase (SOR). Herein we use NO to probe the superoxide binding site of our thiolate-

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5ba9aff26df24f3b7aa3ba4fa5307802
https://pubmed.ncbi.nlm.nih.gov/21207999

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