Observation of Antioxidants Activity using NMR Relaxation Measurements
نویسندگان
چکیده
منابع مشابه
NMR relaxation measurements
The backbone dynamics of the tetrameric p53 oligomerization domain (residues 3 19-360) have been investigated by two-dimensional inverse detected heteronuclear 'H-I5N NMR spectroscopy at 500 and 600 MHz. I5N TI , TZ , and heteronuclear NOES were measured for 39 of 40 non-proline backbone NH vectors at both field strengths. The overall correlation time for the tetramer, calculated from the TI/TZ...
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A method is proposed for direct mapping of spectral density functions of the rotational motions of H-X bond vectors, such as ‘H-“N, by measuring a set of NMR relaxation parameters. The well known and frequently measured relaxation parameters T, and T, probe the spectral density function J(o) at five frequencies: 0, WN, wn, in wN, and wu t wN. In this study, the longitudinal relaxation time T,( ...
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Several single-scan experiments for the measurement of the longitudinal relaxation time (T1) are proposed. These experiments result in fast and accurate determinations of the relaxation rate, are relatively robust to pulse imperfections, and preserve information about the chemical shift. The method used in these experiments is to first encode the T1 values as a spatial variation of the magnetiz...
متن کاملNMR Relaxation
Longitudinal and transverse I5N NMR relaxation times in human ubiquitin have been measured at 600MHz 'H frequency with a reproducibility of better than 1%. Two independent measurements of the 15N-{'H} NOE indicate a random error of ca. 0.01, and no values were larger than the theoretical maximum. The relaxation data are incompatible with isotropic rotational diffusion but agree well with an axi...
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Nuclear magnetic resonance (NMR) relaxometry and diffusometry are important tools for the characterization of heterogeneous materials and porous media, with applications including medical imaging, food characterization and oil-well logging. These methods can be extremely effective in applications where high-resolution NMR is either unnecessary, impractical, or both, as is the case in the emergi...
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ژورنال
عنوان ژورنال: Acta Physica Polonica A
سال: 2018
ISSN: 0587-4246,1898-794X
DOI: 10.12693/aphyspola.133.289