Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10872278 | FEBS Letters | 2011 | 5 Pages |
Abstract
Accumulation of nitroxide radicals, DCP or TMT, under illumination of a thylakoid suspension containing either hydrophilic, DCP-H, or lipophilic, TMT-H, cyclic hydroxylamines that have high rate constants of the reaction with superoxide radicals, was measured using ESR. A slower accumulation of TMT in contrast with DCP accumulation was explained by re-reduction of TMT by the carriers of the photosynthetic electron transport chain within the membrane. Superoxide dismutase suppressed TMT accumulation to a lesser extent than DCP accumulation. The data are interpreted as evidencing the production of intramembrane superoxide in thylakoids.
Keywords
Related Topics
Life Sciences
Agricultural and Biological Sciences
Plant Science
Authors
Marina Kozuleva, Irina Klenina, Ivan Proskuryakov, Igor Kirilyuk, Boris Ivanov,