Výsledky vyhledávání - "Peter E Doan"

Coordination of the Copper Centers in Particulate Methane Monooxygenase: Comparison between Methanotrophs and Characterization of the CuC Site by EPR and ENDOR Spectroscopies

Autor: Peter E. Doan, Amy C. Rosenzweig, Brian M. Hoffman, Christopher W. Koo, Matthew O. Ross, Richard J. Jodts

Publikováno v: Journal of the American Chemical Society. 143:15358-15368

In nature, methane is oxidized to methanol by two enzymes, the iron-dependent soluble methane monooxygenase (sMMO) and the copper-dependent particulate MMO (pMMO). While sMMO's diiron metal active site is spectroscopically and structurally well-chara

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6221be8aa105ba32baeb5e97b2270b8b
https://doi.org/10.1021/jacs.1c07018

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Coordination of the Copper Centers in Particulate Methane Monooxygenase: Comparison between Methanotrophs and Characterization of the Cu

Autor: Richard J, Jodts, Matthew O, Ross, Christopher W, Koo, Peter E, Doan, Amy C, Rosenzweig, Brian M, Hoffman

Publikováno v: J Am Chem Soc

In nature, methane is oxidized to methanol by two enzymes, the iron-dependent soluble methane monooxygenase (sMMO) and the copper-dependent particulate MMO (pMMO). While sMMO’s diiron metal active site is spectroscopically and structurally well-cha

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::70023b5ffe6d112070fb5a76750b621f
https://pubmed.ncbi.nlm.nih.gov/34498465

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The Soybean Lipoxygenase-Substrate Complex: Correlation Between Properties of Tunneling-Ready States and ENDOR-Detected Structures of Ground States

Autor: Judith P. Klinman, Ajay Sharma, Adam R. Offenbacher, Peter E. Doan, Brian M. Hoffman

Publikováno v: Biochemistry

Hydrogen tunneling in enzymatic C-H activation requires a dynamical sampling among ground-state enzyme-substrate (E-S) conformations, which transiently generates a tunneling-ready state (TRS). The TRS is characterized by a hydrogen donor-acceptor dis

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::978f616354475a10e57f8f90c2a656c3
https://europepmc.org/articles/PMC7188194/

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Internal dynamics of a supramolecular nanofibre

Autor: Brian M. Hoffman, John B. Matson, Julia H. Ortony, Peter E. Doan, Christina J. Newcomb, Samuel I. Stupp, Liam C. Palmer

Publikováno v: Nature materials

A large variety of functional self-assembled supramolecular nanostructures have been reported over recent decades.1 The experimental approach to these systems initially focused on the design of molecules for specific interactions that lead to discret

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d4f557472a789b855b0140cc53747bc1
https://doi.org/10.1038/nmat3979

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57Fe ENDOR Spectroscopy and ‘Electron Inventory’ Analysis of the Nitrogenase E4 Intermediate Suggest the Metal-Ion Core of FeMo-Cofactor Cycles Through Only One Redox Couple

Autor: Brian M. Hoffman, Joshua Telser, Brett M. Barney, Peter E. Doan, Lance C. Seefeldt, Robert Y. Igarashi, Dennis R. Dean

Publikováno v: Journal of the American Chemical Society. 133:17329-17340

N(2) binds to the active-site metal cluster in the nitrogenase MoFe protein, the FeMo-cofactor ([7Fe-9S-Mo-homocitrate-X]; FeMo-co) only after the MoFe protein has accumulated three or four electrons/protons (E(3) or E(4) states), with the E(4) state

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::baff4eabb30541c29356ab88a2ebb721
https://doi.org/10.1021/ja205304t

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Combining steady-state and dynamic methods for determining absolute signs of hyperfine interactions: Pulsed ENDOR Saturation and Recovery (PESTRE)

Autor: Peter E. Doan

Publikováno v: Journal of Magnetic Resonance. 208:76-86

The underlying causes of asymmetric intensities in Davies pulsed ENDOR spectra that are associated with the signs of the hyperfine interaction are reinvestigated. The intensity variations in these asymmetric ENDOR patterns are best described as shift

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d37d96fcd209267b86b3a62f99f35731
https://doi.org/10.1016/j.jmr.2010.10.008

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Simulating Suppression Effects in Pulsed ENDOR, and the ‘Hole in the Middle’ of Mims and Davies ENDOR Spectra

Autor: Nicholas S. Lees, Muralidharan Shanmugam, Peter E. Doan, Brian M. Hoffman

Publikováno v: Applied Magnetic Resonance. 37:763-779

All pulsed ENDOR techniques, and in particular the Mims and Davies sequences, suffer from detectability biases ('blindspots') that are directly correlated to the size of the hyperfine interactions of coupled nuclei. Our efforts at ENDOR 'crystallogra

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bb7482f9c302f6a452656bc382e1db5a
https://doi.org/10.1007/s00723-009-0083-6

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The ups and downs of Feher-style ENDOR

Autor: Brian M. Hoffman, Peter E. Doan, Ryszard J. Gurbiel

Publikováno v: Applied Magnetic Resonance. 31:649-663

A new transient variation of the “Feher-style” electron-nuclear double resonance (ENDOR) method is examined. In this technique, the passage-mode electron paramagnetic resonance (EPR) signal is monitored following the application of a pulsed radio

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::db7f87fdde66b1f41a9dcea37f50a50e
https://doi.org/10.1007/bf03166608

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