関連する実験動画
Updated: May 12, 2026
13:37
Split-and-pool Synthesis and Characterization of Peptide Tertiary Amide Library
Published on: June 20, 2014
まとめ
T細胞の分化に不可欠なチムス由来ホルモンである牛のチモポエチンIIの主なアミノ酸配列が決定されました. この49アミノ酸ポリペプチドは,C端で微分異質性を示しています.
科学分野:
- バイオケミストリー バイオケミストリー
- 免疫学 免疫学とは
- 分子生物学は分子生物学である.
背景:
- ティモポエチンは,チムス腺によって生成される重要なホルモンです.
- Tリンパ球 (T細胞) の分化と成熟に重要な役割を果たします.
- ティモポエチンの主要な構造を理解することは,その機能を明らかにするために不可欠です.
研究 の 目的:
- 牛のチモポエチンIIの完全なアミノ酸配列を決定する.
- 分子内の微異質性などの構造的変異を特定する.
主な方法:
- シーケネーターを用いた自動化されたエドマン分解シーケンス.
- マレエーションを用いたチモポエチンIIの化学改変.
- トリプシンによる酵素分裂によりペプチドが生成される.
- 試料の損失を減らすためにベンゼン抽出技術を採用したペプチドの手動配列決定.
主要な成果:
- 牛のチモポエチンIIの49アミノ酸の完全な配列が解明されました.
- 分子重量は5562ダルトンと決定されました.
- マイクロヘテロゲニティはC端で観察され,約3分の1の分子が末端アルギニン残基を保持しています.
結論:
- bovine thymopoietin II の主要な構造は,決定的に確立されています.
- 特定されたC端の微異質性は,ホルモンの生物学的活動に影響を及ぼす可能性があります.
- この構造情報は,チモポエチンのさらなる機能的および免疫学的研究のための基礎を提供します.
関連する概念動画
02:43Peptide Bonds
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01:28Structures of Carboxylic Acid Derivatives
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The three sp2 orbitals of the carbonyl carbon form three σ bonds, one each with the carbonyl oxygen, the α carbon, and the heteroatom, whereas the other two sp2 orbitals of the carbonyl oxygen are occupied by the lone pairs. Further, the unhybridized p...
Carboxylic acid derivatives contain an acyl group attached to a heteroatom such as chlorine, oxygen, or nitrogen. The carbonyl carbon and oxygen are both sp2-hybridized with an unhybridized p orbital.
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01:17Nomenclature of Primary Amines
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01:11Nomenclature of Carboxylic Acid Derivatives: Amides and Nitriles
Naming Amides
The IUPAC and common names of amides are derived from the parent carboxylic acid, by replacing the suffix “oic acid” and “ic acid,” respectively, with “amide.” In the following example, the IUPAC name ethanamide is derived from ethanoic acid, and the common name, acetamide, is obtained from acetic acid.
The IUPAC and common names of amides are derived from the parent carboxylic acid, by replacing the suffix “oic acid” and “ic acid,” respectively, with “amide.” In the following example, the IUPAC name ethanamide is derived from ethanoic acid, and the common name, acetamide, is obtained from acetic acid.
01:12Nomenclature of Secondary and Tertiary Amines
The secondary and tertiary amines are derivatives of ammonia, where two and three of its hydrogens are replaced by alkyl groups, respectively. Secondary and tertiary amines can be symmetrical with identical alkyl groups attached to the nitrogen atom or unsymmetrical when more than one type of alkyl group is present. The standard nomenclature of secondary and tertiary amines is similar to the names given to the primary amines. They are generally named alkylamines. As depicted in Figure 1, for...