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Vanadium is an essential element. It is found widely distributed in minor and trace amounts throughout the lithosphere and biosphere. Vanadium is present in all mammalian tissues at concentrations of about 10 µM or less. Numerous physiological effects of this element are known at both the organismic and cellular levels, and in some instances these effects can be explained in terms of its biochemistry...
The oxycation VO2+ has been employed for many years as an EPR spin probe of the metal binding sites in proteins. Its utility in these investigations has increased markedly with the advent and widespread use of high-resolution techniques such as ENDOR, ESEEM, and HYSCORE to measure isotropic and dipolar components of ligand hyperfine couplings. Measurements with model complexes in conjunction with...
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