Time‐Resolved Chemically Induced Dynamic Nuclear Polarization of Biologically Important Molecules

OB Morozova, KL Ivanov - ChemPhysChem, 2019 - Wiley Online Library
In this work, we review the hyperpolarization technique named chemically induced dynamic
nuclear polarization (CIDNP), focusing on the time‐resolved variant of this method and its …

Photo-CIDNP NMR methods for studying protein folding

KH Mok, PJ Hore - Methods, 2004 - Elsevier
Chemically induced dynamic nuclear polarization (CIDNP) is a nuclear magnetic resonance
phenomenon that can be used to probe the solvent-accessibility of tryptophan, tyrosine, and …

Chemical amplification of magnetic field effects relevant to avian magnetoreception

DR Kattnig, EW Evans, V Déjean, CA Dodson… - Nature Chemistry, 2016 - nature.com
Magnetic fields as weak as the Earth's can change the yields of radical pair reactions even
though the energies involved are orders of magnitude smaller than the thermal energy, k BT …

Photo-CIDNP spectroscopy

M Goez - Annual reports on NMR Spectroscopy, 2009 - Elsevier
Photo-CIDNP spectroscopy relies on a unique interplay of magnetic interactions, diffusion,
and chemical reactivity; it possesses all the advantages of NMR spectroscopy but responds …

H and 13C Hyperfine Coupling Constants of the Tryptophanyl Cation Radical in Aqueous Solution from Microsecond Time-Resolved CIDNP

AS Kiryutin, OB Morozova, LT Kuhn… - The Journal of …, 2007 - ACS Publications
Relative values of the 1H and 13C isotropic hyperfine couplings in the cationic oxidized
tryptophan radical TrpH•+ in aqueous solution are determined. The data are obtained from …

Uniform illumination of optically dense NMR samples

I Kuprov, PJ Hore - Journal of magnetic resonance, 2004 - Elsevier
We demonstrate a simple, inexpensive method for in situ laser illumination of NMR samples
using a stepwise tapered optical fibre to deliver light uniformly along the axis of a 5mm NMR …

Electron transfer between guanosine radical and amino acids in aqueous solution. 1. Reduction of guanosine radical by tyrosine

OB Morozova, AS Kiryutin, RZ Sagdeev… - The Journal of …, 2007 - ACS Publications
As a model of chemical DNA repair, the reductive electron transfer from the aromatic amino
acid tyrosine to the radical of the purine base guanosine monophosphate (GMP) was …

Photo-CIDNP NMR spectroscopy of amino acids and proteins

LT Kuhn - Hyperpolarization methods in NMR spectroscopy, 2013 - Springer
Photo-chemically induced dynamic nuclear polarization (CIDNP) is a nuclear magnetic
resonance (NMR) phenomenon which, among other things, is exploited to extract …

Electron transfer vs. proton-coupled electron transfer as the mechanism of reaction between amino acids and triplet-excited benzophenones revealed by time …

OB Morozova, MS Panov, NN Fishman… - Physical Chemistry …, 2018 - pubs.rsc.org
Hyperfine coupling constants (HFCCs) of the short-lived radicals of 4-carboxy, 4, 4′-
dicarboxy, and 3, 3′, 4, 4′-tetracarboxy benzophenones (4-CBP, DCBP, and TCBP …

Probing the exposure of tyrosine and tryptophan residues in partially folded proteins and folding intermediates by CIDNP pulse-labeling

CE Lyon, ES Suh, CM Dobson… - Journal of the American …, 2002 - ACS Publications
A nuclear magnetic resonance (NMR) technique has been devised to probe the structures of
disordered, partially folded states of proteins at the level of individual amino acid residues …