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Published on: August 1, 2018
The reaction of methionine with hydroxyl radical: reactive intermediates and methanethiol production
Ivan Spasojević1, Jelena Bogdanović Pristov, Ljubodrag Vujisić
1Institute for Multidisciplinary Research, University of Belgrade, Kneza Višeslava 1, 11000, Belgrade, Serbia. redoxsci@gmail.com
Abstract:
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.
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