[me-thahy-uh-neen, -nin] /mɛˈθaɪ əˌnin, -nɪn/

noun, Biochemistry.
an amino acid, CH 3 SCH 2 CH 2 CH(NH 2)COOH, found in casein, wool, and other proteins or prepared synthetically: used as a supplement to a special diet in the prevention and treatment of certain liver diseases. Symbol: M.
Abbreviation: Met;
/mɛˈθaɪəˌniːn; -ˌnaɪn/
an essential amino acid containing sulphur, which occurs in many proteins: important in methylating reactions

methionine me·thi·o·nine (mə-thī’ə-nēn’)
Abbr. Met
A sulfur-containing essential amino acid obtained from various proteins or prepared synthetically and used as a dietary supplement and in pharmaceuticals.
An essential amino acid. Chemical formula: C5H11NO2S. See more at amino acid.


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