Radiation-induced inactivation of enzymes – Molecular mechanism based on inactivation of dehydrogenases
2016
Abstract Proteins, which have enzymatic activities play a fundamental role in the cell due to participation in most of biological processes. Oxidative-induced damage of enzymes often have marked effects on cellular processes, which in consequence determine cell functioning and survival. In this review, we focused on the radiation-induced inactivation of enzymes with particular emphasis on the inactivation of dehydrogenases. For a better understanding of this issue, the efficiency of products of water radiolysis (∙OH, O 2 ∙ − and H 2 O 2 ) in enzyme inactivation has been analysed. Reactions of reactive oxygen species (ROS) with amino acids present in the active site of enzymes appear to have the greatest impact on enzyme inactivation.
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