peptide

Japanese: ペプチド
peptide

When the α-carboxyl group of one amino acid and the α-amino group of another amino acid form an acid amide bond, this bond is called a peptide bond. Compounds formed by peptide bonds are peptides, and they are the basic structure of proteins. When a peptide consists of two amino acids it is called a dipeptide, when it consists of three amino acids it is called a tripeptide, and when it consists of multiple amino acids it is called a polypeptide. Peptides are usually written with the N-terminal amino acid with the α-amino group on the left and the C-terminal amino acid with the α-carboxyl group on the right, and are named as the acyl derivative of the C-terminal amino acid. In other words, the tripeptide in the diagram is alanylglycylphenylalanine.

Source: Morikita Publishing "Chemical Dictionary (2nd Edition)" Information about the Chemical Dictionary 2nd Edition

Japanese:

一つのアミノ酸のα-カルボキシル基と,ほかのアミノ酸のα-アミノ基とが酸アミド結合を形成している場合,この結合をペプチド結合という.ペプチド結合により形成された化合物がペプチドであり,タンパク質の基本的な構造である.ペプチドが二つのアミノ酸よりなる場合をジペプチド,三つのアミノ酸よりなる場合をトリペプチドといい,多数のアミノ酸よりなる場合をポリペプチドという.ペプチドは,通常,α-アミノ基を有するN末端アミノ酸を左に,α-カルボキシル基を有するC末端アミノ酸を右に書き,C末端アミノ酸のアシル誘導体として名づけられる.すなわち,図のトリペプチドはアラニルグルシルフェニルアラニンである.

出典 森北出版「化学辞典(第2版)」化学辞典 第2版について 情報

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