セグメントによるペプチドとタンパク質合成 合成-凝縮
E T Kaiser1, H Mihara, G A Laforet
1Laboratory of Bioorganic Chemistry and Biochemistry, Rockefeller University, New York, NY 10021.
まとめ
この研究は,複雑なペプチドとタンパク質を作るためのオキシームのサポートを使用して,収束化学合成戦略を示しています. この方法は,生物学的機能に不可欠なタンパク質を含む,再設計された二次構造と大きなバイオ分子,合成を容易にする.
科学分野:
- バイオケミストリー バイオケミストリー
- 有機化学 オーガニック・ケミストリー
- 分子生物学は分子生物学である.
背景:
- ペプチドとポリペプチドの化学合成は,生物学的研究において極めて重要です.
- 収束戦略は,複雑な分子を構築するための利点を提供します.
- オキシムサポーターは,ペプチド中間物質の合成を簡素化することができます.
研究 の 目的:
- 生物学的活性ペプチドとポリペプチドを合成するための収束戦略を提示する.
- オキシームの有用性を強調するために,ペプチド合成をサポートします.
- 構造的折り畳みを強調して,これらの方法の大型ペプチドやタンパク質への拡張について議論する.
主な方法:
- 保護されたペプチドセグメントの凝縮を含む収束戦略を使用します.
- 保護された中間ペプチドの合成のためにオキシムサポートを使用します.
- この方法を適用して,アポリポプロテイン,ホメオドメイン,Cro抑制剤,リボヌクレアゼT1.1.のモデルを合成する.
主要な成果:
- オキシム支柱を使用して,保護された中間ペプチドを簡単に合成することが実証されています.
- 再設計された二次構造要素でペプチドを成功して合成した.
- 機能モデルを含む大型ペプチドとタンパク質を合成するための方法論を拡張しました.
結論:
- オキシムによる収束戦略は,複雑なペプチドやポリペプチドを合成するのに有効です.
- このアプローチは,特定の二次構造を持つペプチドを作成する際に特に価値があります.
- この方法は,機能的な三次構造に折りたたむことが重要な大きなバイオ分子合成に希望を示しています.
関連する概念動画
Translation
Lesson: Translation
Translation is the process of synthesizing proteins from the genetic information carried by messenger RNA (mRNA). Following transcription, it constitutes the final step in the expression of genes. This process is carried out by ribosomes, complexes of protein and specialized RNA molecules. Ribosomes, transfer RNA (tRNA), and other proteins produce a chain of amino acids—the polypeptide—as the end product of translation.
Translation Produces the Building Blocks of Life
Translation is the process of synthesizing proteins from the genetic information carried by messenger RNA (mRNA). Following transcription, it constitutes the final step in the expression of genes. This process is carried out by ribosomes, complexes of protein and specialized RNA molecules. Ribosomes, transfer RNA (tRNA), and other proteins produce a chain of amino acids—the polypeptide—as the end product of translation.
Translation Produces the Building Blocks of Life
Peptide Bonds
A peptide bond covalently attaches amino acids through a dehydration reaction. One amino acid's carboxyl group and another amino acid's amino group combine, releasing a water molecule. The resulting bond is the peptide bond. The products that such linkages form are peptides. As more amino acids join this growing chain, the resulting chain is a polypeptide. Each polypeptide has a free amino group at one end. This end has the N-terminal, or the amino-terminal, and the other end has a free...
Termination of Translation
The large ribosomal subunit has several important structures essential to translation. These include the peptidyl transferase center (PTC) - which is the site where the peptide bond is formed - and a large, internal, water-filled tube through which the nascent polypeptide moves. This latter structure is called the Peptide Exit Tunnel, and it begins at the PTC and spans the body of the large ribosomal subunit. During translation, as the nascent polypeptide chain is synthesized, it passes through...
ATP and Macromolecule Synthesis
Biological macromolecules are organic compounds, predominantly composed of carbon atoms. The carbon atoms are covalently bonded with hydrogen, oxygen, nitrogen, and other minor elements. There are four major biological macromolecule classes: carbohydrates, lipids, proteins, and nucleic acids.
Most macromolecules are composed of single subunits, or building blocks, called monomers. The monomers combine with each other using covalent bonds to form larger molecules known as polymers.
Conversion of...
Most macromolecules are composed of single subunits, or building blocks, called monomers. The monomers combine with each other using covalent bonds to form larger molecules known as polymers.
Conversion of...
Translation
Lesson: Translation
Translation is the process of synthesizing proteins from the genetic information carried by messenger RNA (mRNA). Following transcription, it constitutes the final step in the expression of genes. This process is carried out by ribosomes, complexes of protein and specialized RNA molecules. Ribosomes, transfer RNA (tRNA), and other proteins produce a chain of amino acids—the polypeptide—as the end product of translation.
Translation Produces the Building Blocks of Life
Translation is the process of synthesizing proteins from the genetic information carried by messenger RNA (mRNA). Following transcription, it constitutes the final step in the expression of genes. This process is carried out by ribosomes, complexes of protein and specialized RNA molecules. Ribosomes, transfer RNA (tRNA), and other proteins produce a chain of amino acids—the polypeptide—as the end product of translation.
Translation Produces the Building Blocks of Life
Peptidoglycan Synthesis
Structure of PeptidoglycanPeptidoglycan is a vital structural component of the bacterial cell wall, providing mechanical strength and shape to the cell. It consists of repeating units of two sugars—N-acetylglucosamine (NAG) and N-acetylmuramic acid (NAM)—linked by β-1,4 glycosidic bonds. These sugar chains are cross-linked by short peptide chains, forming a mesh-like polymer that surrounds the bacterial plasma membrane.Cytoplasmic Phase – Precursor SynthesisPeptidoglycan biosynthesis begins in...


