methionine

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English[edit]

Structure diagram of methionine
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Etymology[edit]

From me(thyl) + thio- + (euphonic) -n- +‎ -ine.

Pronunciation[edit]

  • (UK) IPA(key): /mɪˈθʌɪəniːn/, /mɪˈθʌɪənɪn/

Noun[edit]

methionine (countable and uncountable, plural methionines)

  1. (biochemistry, organic chemistry) A lipotropic, sulphur-containing essential amino acid, C5H11NO2S, found in most protein.
    • 1999, Matt Ridley, Genome, Harper Perennial 2004, p. 253:
      The purpose was to make soya beans more healthy for those for whom they are a staple food by correcting soya beans' natural deficiency in a chemical called methionine.

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