Electron paramagnetic resonance of Cu2+:Mb single crystal. Conformational changes
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Electron paramagnetic resonance of single crystal oxycobaltmyoglobin and deoxycobaltmyoglobin.
Single crystals of oxycobaltmyoglobin and deoxycobaltmyoglobin have been prepared and found to be isomorphous. The paramagnetic resonance spectra of deoxycobaltmyoglobin yield g(xx) = 2.33(0), g(yy) = 2.32(3), g(zz) = 2.02(8) with the z-axis parallel to the "heme" normal. The A(Co) and g tensors share the same principal axes with|A(Co) parallel| = 79 G and|A(Co)[unk]| = 6 G. A value of A(N) = 1...
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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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ژورنال
عنوان ژورنال: Biophysical Journal
سال: 1977
ISSN: 0006-3495
DOI: 10.1016/s0006-3495(77)85572-0