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Enlarging the panoply of site-directed spin labeling electron paramagnetic resonance (SDSL-EPR): sensitive and selective spin-labeling of tyrosine using an isoindoline-based nitroxide.
Site-directed spin labeling (SDSL) combined with electron paramagnetic resonance (EPR) spectroscopy has emerged as a powerful approach to study structure and dynamics in proteins. One limitation ofExpand
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Polystyrene-block-poly(ethylene oxide) from nitroxide mediated polymerization: detection of minor species by coupled chromatographic techniques
Abstract A polystyrene- block -poly(ethylene oxide) (PS- b -PEO) copolymer is synthesised in an original manner by nitroxide mediated polymerization of styrene from a PEO macroalkoxyamine. MinorExpand
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Orthogonal Tyrosine and Cysteine Site-Directed Spin Labeling for Dipolar Pulse EPR Spectroscopy on Proteins.
Site-directed spin labeling of native tyrosine residues in isolated domains of the protein PTBP1, using a Mannich-type reaction, was combined with conventional spin labeling of cysteine residues.Expand
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Intramolecular Hydrogen Bonding: The Case of β‐Phosphorylated Nitroxide (= Aminoxyl) Radical
Alkoxyamines and persistent nitroxide (= aminoxyl) radicals are important regulators of nitroxide-mediated radical polymerization. Since polymerization times decrease with the increasing homolysisExpand
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In vivo Overhauser-enhanced MRI of proteolytic activity.
There is an increasing interest in developing novel imaging strategies for sensing proteolytic activities in intact organisms in vivo. Overhauser-enhanced MRI (OMRI) offers the possibility to revealExpand
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Radical reaction kinetics during homolysis of N-alkoxyamines: verification of the persistent radical effect
N-Alkoxyamines cleave into transient alkyl and persistent aminoxyl radicals which then combine and regenerate the parent compounds. Simultaneously, the alkyl species self-terminate, and this causes aExpand
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Regio-defined amino[5]oxa- and thiahelicenes: a dramatic impact of the nature of the heteroatom on the helical shape and racemization barriers.
The present approach to heterohelicenes provides original [5]oxa- and thiahelicenes, where both oxygen and sulfur atoms are located at the end of the inner helix. Quantum chemical calculations areExpand
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Characterization of cyclic and non-cyclic poly-(ether-urethane)s bio-based sugar diols by a combination of MALDI-TOF and NMR
Abstract Matrix-assisted laser desorption/ionization (MALDI) mass spectrometry and NMR spectroscopy have been applied for characterization of novel poly-(ether-urethane)s ( PolyEU ) based on variousExpand
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Factors influencing C-ON bond homolysis in alkoxyamines: unexpected behavior of SG1 (N-(2-methyl-2-propyl)- N-(1-diethylphosphono-2,2-dimethylpropyl)-N-oxyl)-based alkoxyamines.
Alkoxyamines and persistent nitroxides are important regulators of nitroxide-mediated radical polymerization (NMP). Since the polymerization time decreases with the increasing equilibrium constant KExpand
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Synthesis of a series of SG1 2‐[N‐tert‐butyl‐N‐(1‐diethoxyphosphoryl‐2,2‐dimethylpropyl)aminoxyl] based alkoxyamines, SG1‐CH(Me)CO2R, and measurement of the homolysis rate constants of the C ? ON bond
During nitroxide-mediated polymerization, the polymerization time decreases with an increasing rate constant of the cleavage of the NOC bond of dormant alkoxyamines. Thus, knowledge of the factorsExpand
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