ethionine
/iːˈθʌɪəniːn/ /iːˈθʌɪənɪn/Chemistry
noun
A toxic amino acid, not present in proteins, that is the ethyl homologue of methionine and acts as a growth inhibitor.
- Systematic name: 2-amino-4-(ethylthio)butanoic acid; C2H5S·CH2CH2CH(NH2)·COOH..
Origin
1930s. From eth- + -ionine.
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