An Electron Paramagnetic Resonance Study of 3,4-Dihydroxyphenylethylamine β-Hydroxylase
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چکیده
منابع مشابه
Electron paramagnetic resonance study of carp methemoglobin.
The g anisotropy of the EPR spectra of carp azidomethemoglobin is found to be pH-dependent, whereas, the spectra of human azidomethemoglobin are not. The two hemoglobins have the same g values at alkaline pH values. Crystal field analysis yielded values of 2.25 and 3.31, respectively, for the rhombic distortion, V/lambda, and the tetragonal distortion, delta/lambda. The spin orbit coupling cons...
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We present results of an electron paramagnetic resonance (EPR) study of Nd1−xSrxMnO3 with x = 0.5 across the paramagnetic to ferromagnetic, insulator to metal transition at 260 K (Tc) and the antiferromagnetic, charge ordering transition (TN = Tco) at 150 K. The results are compared with those on Nd0.45Sr0.55MnO3 which undergoes a transition to a homogeneous A-type antiferromagnetic phase at TN...
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where E0 is the energy level without any external magnetic field B = B0êz. Again, g denotes the g factor[5]. For induced transitions, the selection rule is ∆ms = ±1. For unpaired electrons, however, this selection rule is observed for all transitions, as S = 12 and, hence, ms ∈ {− 12 , 2}. The previous formulas are based on the assumption that the response of the material on the external magnet...
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Hyperpolarization via dissolution dynamic nuclear polarization (DNP) is a versatile method to dramatically enhance the liquid-state NMR signal of X-nuclei and can be used for performing metabolic and molecular imaging. It was recently demonstrated that instead of incorporating persistent radicals as source of unpaired electron spins, required for DNP, nonpersistent radicals can be photoinduced ...
متن کاملElectron Paramagnetic Resonance Theory
In 1921, Gerlach and Stern observed that a beam of silver atoms splits into two lines when it is subjected to a magnetic field [1–3]. While the line splitting in optical spectra, first found by Zeeman in 1896 [4, 5], could be explained by the angular momentum of the electrons, the s-electron of silver could not be subject to such a momentum, not to mention that an azimuthal quantum number l = 1...
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ژورنال
عنوان ژورنال: Journal of Biological Chemistry
سال: 1966
ISSN: 0021-9258
DOI: 10.1016/s0021-9258(18)96614-7