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関連する概念動画

Protein Folding01:25

Protein Folding

Proteins are chains of amino acids linked together by peptide bonds. Upon synthesis, a protein folds into a three-dimensional conformation, critical to its biological function. Interactions between its constituent amino acids guide protein folding, and hence the protein structure is primarily dependent on its amino acid sequence.
Protein Structure Is Critical to Its Biological Function
Proteins perform a wide range of biological functions such as catalyzing chemical reactions, providing...
Protein Folding01:22

Protein Folding

Overview
Peptide Bonds02:43

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...
Protein Organization01:13

Protein Organization

Overview
Protein Organization01:24

Protein Organization

Proteins are polymers of amino acid residues. They are versatile and responsible for different cellular functions, including DNA replication, molecular transport, catalysis, and structural support. Proteins have a hierarchical structure comprising at least three levels of organization: primary, secondary, and tertiary structure. Some large proteins have a quaternary structure where individual protein subunits are linked together.
The primary structure of a protein is its amino acid sequence.
Protein and Protein Structure02:15

Protein and Protein Structure

Proteins are one of the most abundant organic molecules in living systems and have the most diverse range of functions of all macromolecules. Proteins may be structural, regulatory, contractile, or protective. They may serve in transport, storage, or membranes; or they may be toxins or enzymes. Their structures, like their functions, vary greatly. They are all, however, amino acid polymers arranged in a linear sequence.
A protein's shape is critical to its function. For example, an enzyme can...

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関連する実験動画

Updated: May 26, 2026

Structure and Coordination Determination of Peptide-metal Complexes Using 1D and 2D 1H NMR
14:44

Structure and Coordination Determination of Peptide-metal Complexes Using 1D and 2D 1H NMR

Published on: December 16, 2013

終末効果は,ショートモデルペプチド構成に影響する.

Liu He1, Abel E Navarro, Zhengshuang Shi

  • 1School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, PR China.

Journal of the American Chemical Society
|December 20, 2011
PubMed
まとめ

ペプチド構成に関する研究では,P(II) ヘリックス傾向は,アミノ酸配列およびエンドグループ改変に大きく依存していることが明らかになっています. この発見は,正確なペプチド構造予測モデルの開発に影響を与えます.

科学分野:

  • バイオフィジックス 生物物理学
  • 化学生物学 化学生物学とは
  • 構造生物学 構造生物学とは

背景:

  • 以前の研究では,ブロックされたペプチドのP (II) 傾向スケールが確立され,P (II) が支配的な形状であることを示唆しました.
  • ブロックされていないトリペプチドに関する最近の研究は,異なるP ((II)) 含有量を示し,潜在的な文脈依存性を強調しました.

研究 の 目的:

  • pHとシーケンスの文脈がP (II) ヘリックス傾向に及ぼす影響を調査する.
  • 異なるペプチドモデルから派生したP(II) 傾向スケールの不一致を調和させるため.

主な方法:

  • 異なるアミノ酸 (A,V,F,S) を含む3つのペプチド系 (GXG,AcGXGNH(2),AcGGXGGNH(2) の合成とスペクトル解析.
  • スペクトロスコーピテクニックを用いたpH依存型構成分析.

主要な成果:

  • GXGシリーズのP (II) 含有量はpHに依存しています.
  • ブロックされていない GXG シリーズとブロックされた AcGXGNH ((2) / AcGGXGGNH ((2) シリーズの間に重要な形状の違いが観察されました.
  • アミノ酸P (II) の傾向は,配列と充電されたエンドグループの存在に敏感です.

さらに関連する動画

Constructing Thioether/Vinyl Sulfide-tethered Helical Peptides Via Photo-induced Thiol-ene/yne Hydrothiolation
11:09

Constructing Thioether/Vinyl Sulfide-tethered Helical Peptides Via Photo-induced Thiol-ene/yne Hydrothiolation

Published on: August 1, 2018

Development of Inhibitors of Protein-protein Interactions through REPLACE: Application to the Design and Development Non-ATP Competitive CDK Inhibitors
10:33

Development of Inhibitors of Protein-protein Interactions through REPLACE: Application to the Design and Development Non-ATP Competitive CDK Inhibitors

Published on: October 26, 2015

関連する実験動画

Last Updated: May 26, 2026

Structure and Coordination Determination of Peptide-metal Complexes Using 1D and 2D 1H NMR
14:44

Structure and Coordination Determination of Peptide-metal Complexes Using 1D and 2D 1H NMR

Published on: December 16, 2013

Constructing Thioether/Vinyl Sulfide-tethered Helical Peptides Via Photo-induced Thiol-ene/yne Hydrothiolation
11:09

Constructing Thioether/Vinyl Sulfide-tethered Helical Peptides Via Photo-induced Thiol-ene/yne Hydrothiolation

Published on: August 1, 2018

Development of Inhibitors of Protein-protein Interactions through REPLACE: Application to the Design and Development Non-ATP Competitive CDK Inhibitors
10:33

Development of Inhibitors of Protein-protein Interactions through REPLACE: Application to the Design and Development Non-ATP Competitive CDK Inhibitors

Published on: October 26, 2015

結論:

  • P(II) 傾向スケールは普遍的ではなく,ペプチド配列とエンドグループの特徴によって強く影響を受けます.
  • この発見は,ペプチド構造の予測と設計において,配列の文脈とエンドグループ効果を考慮することの重要性を強調しています.