Enzymes and Proteins in the Reactions of Oxygen and Oxygen Derivatives
We are here concerned with metalloproteins and metalloenzymes that participate in the reactions of oxygen and its derivatives. Oxygen (dioxygen), as O2, is rather stable; that is, it is kinetically inert despite its biradical character. However, it is potentially a strong oxidant, having a reduction potential of +0.8 V at pH 7. The reduction potentials of oxygen and its derivatives are shown in Table 4-1 and Fig. 3-3. Hydrogen peroxide is also strongly oxidizing; so are the related hydroperoxides ROOH in which R is an organic residue.
KeywordsCopper Atom Heme Iron Ribonucleotide Reductase Oxygen Carrier Heme Group
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