Electron Spin Resonance Spectroscopy
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Subject Areas on Research
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31P NMR probes of chemical dynamics: paramagnetic relaxation enhancement of the (1)H and (31)P NMR resonances of methyl phosphite and methylethyl phosphate anions by selected metal complexes.
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57Fe and 1H electron-nuclear double resonance of three doubly reduced states Escherichia coli sulfite reductase.
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A carbon monoxide irreducible form of cytochrome c oxidase and other unusual properties of the "monomeric" shark enzyme.
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A comparative study of antioxidative activities of cell-wall polysaccharides.
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A free radical mechanism of prostaglandin synthase-dependent aminopyrine demethylation.
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A hot oxidant, 3-NO2Y122 radical, unmasks conformational gating in ribonucleotide reductase.
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A molybdopterin-free form of xanthine oxidase.
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A new irreversibly inhibited form of xanthine oxidase from ethylisonitrile.
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A new monofluorinated phosphatidylcholine forms interdigitated bilayers.
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Activated conformers of Escherichia coli sulfite reductase heme protein subunit.
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Alkaline low spin form of sulfite reductase hemeprotein subunit.
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An electron spin resonance study of cholestane spin label in aqueous mixtures of biliary lipids.
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An iron tetrahydroporphyrin prosthetic group common to both assimilatory and dissimilatory sulfite reductases.
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Apolipoprotein C-III/sphingomyelin recombinants: formation, isolation, and characterization.
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Apple pectin-derived oligosaccharides produce carbon dioxide radical anion in Fenton reaction and prevent growth of Escherichia coli and Staphylococcus aureus.
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Assays to measure plasma membrane and cytoskeletal changes in interferon-treated cells.
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Association of molybdopterin guanine dinucleotide with Escherichia coli dimethyl sulfoxide reductase: effect of tungstate and a mob mutation.
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Automated MR image synthesis: feasibility studies.
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Bioavailability and catalytic properties of copper and iron for Fenton chemistry in human cerebrospinal fluid.
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Biochemical and structural insights into bacterial organelle form and biogenesis.
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Bioreduction of nitroxides by Staphylococcus aureus.
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Characterisation of PduS, the pdu metabolosome corrin reductase, and evidence of substructural organisation within the bacterial microcompartment.
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Characterization of complexes between Escherichia coli sulfite reductase hemoprotein subunit and its substrates sulfite and nitrite.
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Characterization of the flavoprotein moieties of NADPH-sulfite reductase from Salmonella typhimurium and Escherichia coli. Physicochemical and catalytic properties, amino acid sequence deduced from DNA sequence of cysJ, and comparison with NADPH-cytochrome P-450 reductase.
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Characterization of two different five-coordinate soluble guanylate cyclase ferrous-nitrosyl complexes.
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Comparison of birefringent electric split-ring resonator and meanderline structures as quarter-wave plates at terahertz frequencies.
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Computational de novo design and characterization of a four-helix bundle protein that selectively binds a nonbiological cofactor.
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Confirmation of the involvement of protein domain movement during the catalytic cycle of the cytochrome bc1 complex by the formation of an intersubunit disulfide bond between cytochrome b and the iron-sulfur protein.
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Conformationally distinct five-coordinate heme-NO complexes of soluble guanylate cyclase elucidated by multifrequency electron paramagnetic resonance (EPR).
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Construction of a novel redox protein by rational design: conversion of a disulfide bridge into a mononuclear iron-sulfur center.
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Construction of new ligand binding sites in proteins of known structure. II. Grafting of a buried transition metal binding site into Escherichia coli thioredoxin.
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Converting a maltose receptor into a nascent binuclear copper oxygenase by computational design.
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Coordinate and redox interactions of epinephrine with ferric and ferrous iron at physiological pH.
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Copper-chelatin: isolation from various eucaryotic sources.
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Copper-chelatin: purification and properties of a copper-binding protein from rat liver.
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Cupric-amyloid beta peptide complex stimulates oxidation of ascorbate and generation of hydroxyl radical.
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Detection of hydrogen atom adduct of spin-trap DEPMPO. The relevance for studies of biological systems.
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Different roles of radical scavengers--ascorbate and urate in the cerebrospinal fluid of amyotrophic lateral sclerosis patients.
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Direct and cost-efficient hyperpolarization of long-lived nuclear spin states on universal (15)N2-diazirine molecular tags.
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EPR spectroscopy of nitrite complexes of methemoglobin.
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Effects of genistein and daidzein on erythrocyte membrane fluidity: an electron paramagnetic resonance study.
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Electron paramagnetic resonance and optical evidence for interaction between siroheme and Fe4S4 prosthetic groups in complexes of Escherichia coli sulfite reductase hemoprotein with added ligands.
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Electron paramagnetic resonance and optical spectroscopic evidence for interaction between siroheme and Fe4S4 prosthetic groups in Escherichia coli sulfite reductase hemoprotein subunit.
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Electron paramagnetic resonance and potentiometric studies of arsenite interaction with the molybdenum centers of xanthine oxidase, xanthine dehydrogenase, and aldehyde oxidase: a specific stabilization of the molybdenum(V) oxidation state.
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Electron paramagnetic resonance of the tungsten derivative of rat liver sulfite oxidase.
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Electron paramagnetic resonance properties and oxidation-reduction potentials of the molybdenum, flavin, and iron-sulfur centers of chicken liver xanthine dehydrogenase.
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Electron paramagnetic resonance studies of iron reduction and semiquinone formation in metalloflavoproteins.
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Electron paramagnetic resonance studies on the molybdenum center of assimilatory NADH:nitrate reductase from Chlorella vulgaris.
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Electronic structure of a paramagnetic {MNO}6 complex: MnNO 5,5-tropocoronand.
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Elucidation of a [4Fe-4S] cluster degradation pathway: rapid kinetic studies of the degradation of Chromatium vinosum HiPIP.
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Escherichia coli sulfite reductase hemoprotein subunit. Prosthetic groups, catalytic parameters, and ligand complexes.
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Evidence for formation of superoxide and formate radicals in Methanobacterium formicicum.
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Evidence for siroheme-Fe4S4 interaction in spinach ferredoxin-sulfite reductase.
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Evidence for the inorganic nature of the cyanolyzable sulfur of molybdenum hydroxylases.
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Evidence for the intertwined dimer of the cytochrome bc(1) complex in solution.
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Fe3+ coordination and redox properties of a bacterial transferrin.
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Formate dehydrogenase from Methanobacterium formicicum. Electron paramagnetic resonance spectroscopy of the molybdenum and iron-sulfur centers.
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Free radicals and antioxidants at a glance using EPR spectroscopy.
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Free radicals formed by exposure of pyrimidine solids to sodium atoms: an electron spin resonance study.
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Functional evaluation of nonphagocytic NAD(P)H oxidases.
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Glutamate 350 Plays an Essential Role in Conformational Gating of Long-Range Radical Transport in Escherichia coli Class Ia Ribonucleotide Reductase.
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Hepatic sulfite oxidase. Congruency in mitochondria of prosthetic groups and activity.
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Hepatic sulfite oxidase. Effect of anions on interaction with cytochrome c.
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Hepatic sulfite oxidase. Identification of the molybdenum center as the site of irreversible inactivation by ferricyanide.
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How can a single second sphere amino acid substitution cause reduction midpoint potential changes of hundreds of millivolts?
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Huntington disease and Tourette syndrome. I. Electron spin resonance of bed ghosts.
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Identification and characterization of the enzymatic activity of zeta-crystallin from guinea pig lens. A novel NADPH:quinone oxidoreductase.
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Identification of a molybdopterin-containing molybdenum cofactor in xanthine dehydrogenase from Pseudomonas aeruginosa.
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Identification of quinone-binding and heme-ligating residues of the smallest membrane-anchoring subunit (QPs3) of bovine heart mitochondrial succinate:ubiquinone reductase.
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Identification of the iron-sulfur center of spinach ferredoxin-nitrite reductase as a tetranuclear center, and preliminary EPR studies of mechanism.
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Improved excitation pulse bandwidths using shaped pulses, with application to heteronuclear half filters in macromolecular NMR.
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Inactivation of bacteriophages via photosensitization of fullerol nanoparticles.
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Insect crossbridges, relaxed by spin-labeled nucleotide, show well-ordered 90 degrees state by X-ray diffraction and electron microscopy, but spectra of electron paramagnetic resonance probes report disorder.
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Interaction of spin-labeled nicotinamide adenine dinucleotide phosphate with chicken liver fatty acid synthase.
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Internal electron transfer between hemes and Cu(II) bound at cysteine beta93 promotes methemoglobin reduction by carbon monoxide.
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Investigation of photoexcited states in porcine eumelanin through their transient radical products.
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Investigation of potential gene-gene interactions between APOE and RELN contributing to autism risk.
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Isolation of the domain containing the molybdenum, iron-sulfur I, and iron-sulfur II centers of chicken liver xanthine dehydrogenase.
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Isolation, structure, and HIV-1 integrase inhibitory activity of Cytosporic acid, a fungal metabolite produced by a Cytospora sp.
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Magnetic interactions in milk xanthine oxidase.
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Magnetic resonance angiography with hyperpolarized 129Xe dissolved in a lipid emulsion.
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Magnetization of the sulfite and nitrite complexes of oxidized sulfite and nitrite reductases: EPR silent spin S = 1/2 states.
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Mechanism of fast protein folding.
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Mechanisms of inactivation of molybdoenzymes by cyanide.
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Mechanistic study on the reaction of a radical SAM dehydrogenase BtrN by electron paramagnetic resonance spectroscopy.
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Membrane protein organization of peripheral blood lymphocytes from healthy young and aged adults.
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Metal sites of copper-zinc superoxide dismutase.
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Molecular basis of the biological function of molybdenum. Effect of tungsten on xanthine oxidase and sulfite oxidase in the rat.
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Molecular basis of the biological function of molybdenum. Molybdenum-free sulfite oxidase from livers of tungsten-treated rats.
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Molecular basis of the biological function of molybdenum. Molybdenum-free xanthine oxidase from livers of tungsten-treated rats.
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Mössbauer evidence for exchange-coupled siroheme and [4Fe-4S] prosthetic groups in Escherichia coli sulfite reductase. Studies of the reduced states and of a nitrite turnover complex.
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Mössbauer spectroscopic studies of Escherichia coli sulfite reductase. Evidence for coupling between the siroheme and Fe4S4 cluster prosthetic groups.
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Mössbauer studies of Escherichia coli sulfite reductase complexes with carbon monoxide and cyanide. Exchange coupling and intrinsic properties of the [4Fe-4S] cluster.
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Nitric oxide interactions with cobalamins: biochemical and functional consequences.
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Nitric oxide synthase inhibitors decrease coronary sinus-free radical concentration and ameliorate myocardial stunning in an ischemia-reperfusion model.
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Nitric-oxide synthase output state. Design and properties of nitric-oxide synthase oxygenase/FMN domain constructs.
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Nitrite-methemoglobin inadequate for hypoxic vasodilation.
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Nitroxide conjugate of a thermally responsive elastin-like polypeptide for noninvasive thermometry.
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Nonequivalence of the flavin adenine dinucleotide moieties of chicken liver xanthine dehydrogenase.
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Observation of 17O effects on MoV EPR spectra in sulfite oxidase, xanthine dehydrogenase, and MoO(SC6H5)4-.
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On the reaction of ferric heme proteins with nitrite and sulfite.
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One-stop-shop tumor imaging: buy hypoxia, get lactate free.
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Optical and electron paramagnetic resonance spectroscopic studies on purine hydroxylase II from Aspergillus nidulans.
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Oxygen binding to partially nitrosylated hemoglobin.
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Paradigm Shift for Radical S-Adenosyl-l-methionine Reactions: The Organometallic Intermediate Ω Is Central to Catalysis.
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Photoionization thresholds of melanins obtained from free electron laser-photoelectron emission microscopy, femtosecond transient absorption spectroscopy and electron paramagnetic resonance measurements of oxygen photoconsumption.
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Properties of the prosthetic groups of rabbit liver aldehyde oxidase: a comparison of molybdenum hydroxylase enzymes.
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Pulsed EPR studies of nonexchangeable protons near the Mo(V) center of sulfite oxidase: direct detection of the alpha-proton of the coordinated cysteinyl residue and structural implications for the active site.
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Pulsed EPR studies of the exchangeable proton at the molybdenum center of dimethyl sulfoxide reductase.
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Purification and properties of sulfite oxidase from chicken liver. Presence of molybdenum in sulfite oxidase from diverse sources.
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Recombinant Rhodobacter capsulatus xanthine dehydrogenase, a useful model system for the characterization of protein variants leading to xanthinuria I in humans.
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Redox properties of human hemoglobin in complex with fractionated dimeric and polymeric human haptoglobin.
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Redox properties of human transferrin bound to its receptor.
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STRUCTURE AND FUNCTION OF IRON-FLAVOPROTEINS.
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Specificity of biochemical and biophysical tests in Duchenne and myotonic muscular dystrophy, carrier states, and congenital myotonia.
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Spectroscopic studies of the molybdenum-containing dimethyl sulfoxide reductase from Rhodobacter sphaeroides f. sp. denitrificans.
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Spin labeled acetylcholine analogs: studies of cholinergic receptor.
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Spin-trapping of oxygen free radicals in chemical and biological systems: new traps, radicals and possibilities.
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Structures of the siroheme- and Fe4S4-containing active center of sulfite reductase in different states of oxidation: heme activation via reduction-gated exogenous ligand exchange.
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Studies of aldehyde oxidase by electron paramagnetic resonance spectroscopy. I. Spectra at equilibrium states.
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Studies of aldehyde oxidase by electron paramagnetic resonance spectroscopy. II. Kinetic studies by rapid freezing.
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Studies of the copper and heme cofactors of pseudomonad L-tryptophan-2,3-dioxygenase by electron paramagnetic resonance spectroscopy.
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Studies of vanadium toxicity in the rat. Lack of correlation with molybdenum utilization.
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The case of the missing NO-hemoglobin: spectral changes suggestive of heme redox reactions reflect changes in NO-heme geometry.
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The influence of the synergistic anion on iron chelation by ferric binding protein, a bacterial transferrin.
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The interaction of arsenite with the molybdenum center of chicken liver xanthine dehydrogenase.
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The mechanism of conversion of rat liver xanthine dehydrogenase from an NAD+-dependent form (type D) to an O2-dependent form (type O).
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The nature of the axial ligands of spinach cytochrome.
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The nature of the nitric oxide complexes of lipoxygenase.
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The negative effect of soy extract on erythrocyte membrane fluidity: an electron paramagnetic resonance study.
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The nitric oxide donor S-nitroso-N-acetylpenicillamine (SNAP) increases free radical generation and degrades left ventricular function after myocardial ischemia-reperfusion.
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The nitric oxide synthase inhibitor N(G)-nitro-L-arginine decreases defibrillation-induced free radical generation.
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The nitric oxide synthase inhibitor N(G)-nitro-L-arginine decreases defibrillation-induced free radical generation.
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The oxyhemoglobin reaction of nitric oxide.
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The partially reduced species present in purified cytochrome oxidase from baker's yeast is cytochrome a.
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The potential physiological implications of polygalacturonic acid-mediated production of superoxide.
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The role of molybdenum in xanthine oxidase and related enzymes. Reactivity with cyanide, arsenite, and methanol.
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The site of the redox-linked proton pump in eukaryotic cytochrome c oxidases.
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Tissue relaxation time: in vivo field dependence.
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Total reconstitution of copper-zinc superoxide dismutase.
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Tryptic cleavage of rat liver sulfite oxidase. Isolation and characterization of molybdenum and heme domains.
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Tumor vascular permeability to a nanoprobe correlates to tumor-specific expression levels of angiogenic markers.
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Using alpha-helical coiled-coils to design nanostructured metalloporphyrin arrays.