spin label


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spin label

[′spin ‚lā·bəl]
(physical chemistry)
A molecule which contains an atom or group of atoms exhibiting an unpaired electron spin that can be detected by electron spin resonance (ESR) spectroscopy and can be bonded to another molecule.
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The interactive spin label marks a first for the food industry, Huhtamaki said, and Koch Foods has an exclusivity arrangement with Turlock, Calif.
The EPR spectra of maleimide derivative spin label (6-MSL) covalently attached to stratum corneum proteins indicate that 1,8-cineole does not alter the dynamics of protein backbones.
Selected values for variables such as g-factors, hyperfine structure constants, and line widths can then be used to estimate the biophysical characteristics of the-16-doxyl stearic acid spin label.
Changes in the mobility and accessibility of the spin labels, and the distances between spin labels, enables changes in the secondary and tertiary structure of proteins to be discerned.
The simplest method for characterizing motion of the spin label is the measurement of the maximum splitting 2[A'.
b]--is a generalized spin label, and [alpha] uniquely labels the remaining degrees of freedom of the asymptotic atomic scattering states for the 3[S.