...A general term for compounds in which two or more amino acids are linked together by peptide bonds. A peptide bond is formed when one molecule of water is removed from the amino group of an amino acid and the carboxyl group of the adjacent amino acid, forming a covalent bond. Peptides of various lengths exist in nature, each with its own specific biological activity. Depending on the number of amino acid residues, they are called dipeptides (2), tripeptides (3), tetrapeptides (4), etc., but those with several or more are generally referred to as polypeptides, and polypeptides consisting of 50 or more amino acid residues are classified as proteins. *Some of the glossaries that mention "Old Hebrew" are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…二つ以上のアミノ酸がペプチド結合によって連なった化合物の総称。アミノ酸のアミノ基と隣のアミノ酸のカルボキシル基から1分子の水が除かれて,共有結合するとペプチド結合が生じる。自然界にはさまざまな長さのペプチドがあり,それぞれ特異的な生物活性をもつ。アミノ酸残基の数によってジペプチド(2),トリペプチド(3),テトラペプチド(4)などと呼ばれるが,数個以上をもつものは通常ポリペプチドと総称され,さらに50以上のアミノ酸残基から成るポリペプチドはタンパク質に分類する。… ※「Old Hebrew」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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