The reaction of methionine with hydroxyl radical: reactive intermediates and methanethiol production
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The mechanisms of reaction of methionine with hydroxyl radical are not fully understood. Here, we unequivocally show using electron paramagnetic resonance spin-trapping spectroscopy and GC-FID and GC-MS, the presence of specific carbon-, nitrogen- and sulfur-centered radicals as intermediates of this reaction, as well as the liberation of methanethiol as a gaseous end product. Taking into account the many roles that methionine has in eco- and biosystems, our results may elucidate redox chemistry of this amino acid and processes that methionine is involved in.
Ključne reči:Methionine / Hydroxyl radical / EPR / GC / Free radical / Methanethiol
Izvor:Amino Acids, 2012, 42, 6, 2439-2445
- Springer Wien, Wien