A
hydroxyl radical removes a hydrogen
atom from one of the carbon atoms in the fatty acid chain (only a portion of which is shown) forming
a
molecule of water and leaving the carbon
atom with an unpaired electron (in red); thus now a radical.
Full article >>>The
hydroxyl radical is central to atmospheric chemistry as it initiates the
oxidation of hydrocarbons in the atmosphere and so acts like a detergent.
Secondly the re
action:
NO2 + hν ' NO + O ...
Full article >>>Alternatively, it is possible that the
hydroxyl radical may be generated, as seen in the re
action of certain iron chelates with H2O2.
Full article >>>radiodurans may act as free radical scavengers, thus increasing resistance to
DNA damage by
hydroxyl radicals. High levels of two
oxygen toxicity defense
enzymes, superoxide dismutase and
catalase, are also found in D. radiodurans.
Full article >>>'"/>