ISSN:
1432-1904
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
,
Chemistry and Pharmacology
,
Natural Sciences in General
Notes:
Summary X-rays act in living cells by two oxidants, hydrogen peroxide and OH-radicals, that arise by the splitting of water and are measured by the oxidation of iron of the Fricke solution, in our manometric actinometer. The detector of the hydrogen peroxide is the enzyme catalase, added during the irradiation to the cell suspensions. All the oxidant that is not hydrogen peroxide, is the OH-radical. No other substances are produced primarily by the X-rays, because the absorbed energy of the X-rays can be measured quantitatively by the oxidation of the iron of the Fricke solution. The two oxidants, the hydrogen peroxide and the OH-radicals, may oxidize every component of the living cell. But the main substrates are the respiratory enzymes, the fermentation enzymes and the protein synthesizing enzymes—that are the nucleic acids.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00637235
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