Electron-paramagnetic-resonance studies on a photochemically produced species of horseradish peroxidase compound I
Keyword(s):
Strong electron-paramagnetic-resonance signals in the g = 2.00 region were detected after irradiation of horseradish peroxidase Compound I at temperatures of 10 and 100 K. These signals establish the presence of new free-radical species in the peroxidase system. The new species are interpreted in terms of a haem-photosensitized oxidation of the protein's peptide groups close to the Compound I radical site. On warming to room temperature, the radicals decayed irreversibly to a species having a weak asymmetric electron-paramagnetic-resonance signal at 100 K, which could still be observed after incubation at room temperature for more than 1 h.
1991 ◽
Vol 46
(7)
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pp. 579-582
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1986 ◽
Vol 2
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pp. 25-32
2019 ◽
1987 ◽
Vol 912
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pp. 74-81
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2005 ◽
Vol 60
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pp. 549-553
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