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2-Aminoisobutyric acid : ウィキペディア英語版 | 2-Aminoisobutyric acid
|Section2= }} 2-Aminoisobutyric acid, or α-aminoisobutyric acid (AIB) or α-methylalanine or 2-methylalanine, is an amino acid with the structural formula is H2N-C(CH3)2-COOH. It is contained in some antibiotics of fungal origin, e.g. alamethicin and some lantibiotics. It is not one of the proteinogenic amino acids and rather rare in nature (''cf.'' Non-proteinogenic amino acids). α-Aminoisobutyric acid is a strong helix inducer in peptides. Its oligomers form 3-10 helices. In the laboratory, 2-aminoisobutyric acid may be prepared from acetone cyanohydrin, by reaction with ammonia followed by hydrolysis.〔.〕 ==References== 〔
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