関連する実験動画
Updated: Jul 11, 2026

12:42
Microfluidic Mixers for Studying Protein Folding
Published on: April 10, 2012
タンパク質の折りたたみに対する究極の速度制限は,形状的探求である
Kingshuk Ghosh1, S Banu Ozkan, Ken A Dill
1Department of Pharmaceutical Chemistry, University of California, San Francisco, California 94158, USA.
Journal of the American Chemical Society
|September 11, 2007
まとめ
超高速なタンパク質の折り畳みには,高温で負の活性化エネルギーを持つ異常な運動学が含まれています. 新しいThruway Search Modelは,折り畳み率をエネルギー景観の並列の顕微鏡の経路と関連付けることでこれを説明しています.
科学分野:
- バイオフィジックス 生物物理学
- タンパク質のダイナミクス
- 化学動力学 化学動力学
背景:
- 超高速折りたたみとして知られるタンパク質は,異常な折りたたみ運動を示します.
- 従来のプロセスとは異なり,高温で負の活性化エネルギーを示します.
研究 の 目的:
- 超高速タンパク質フォルダの運動を説明するモデルを開発する.
- 折り畳み率とエネルギー景観の特徴との関係を調査する.
主な方法:
- Thruway Search Modelを開発し,マクロスコピック・マス・アクションとマイクロスコピック・エネルギー・ランドスケープの記述を統合した.
- 13つの超高速フォルダの実験データにモデルを適用しました.
主要な成果:
- モデルは,実験的な折り畳み率と均衡と良好な一致を示しています.
- 折りたたみの速度は,顕微鏡の折りたたみの経路の数に比例する.
- 高温での負の活性化エネルギーは,変性化されたアンサンブルを通しての検索に起因する.
結論:
- Thruway Search Modelは,超高速タンパク質の折りたたみ運動を成功裏に説明しています.
- 温度上昇は,検索スペースを拡大し,拡張された無性化アンサンブルによる折り畳みを遅らせます.
- これらのタンパク質に対する自由エネルギーバリアは正であるが,小さい (わずか0.5 kT).
関連する概念動画
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 Structure Is Critical to Its Biological Function
Proteins perform a wide range of biological functions such as catalyzing chemical reactions, providing...
Protein Folding
Overview
Protein Folding
Overview
Molecular Chaperones and Protein Folding
The native conformation of a protein is formed by interactions between the side chains of its constituent amino acids. When the amino acids cannot form these interactions, the protein cannot fold by itself and needs chaperones. Notably, chaperones do not relay any additional information required for the folding of polypeptides; the native conformation of a protein is determined solely by its amino acid sequence. Chaperones catalyze protein folding without being a part of the folded protein.
The...
The...
Molecular Chaperones and Protein Folding
The native conformation of a protein is formed by interactions between the side chains of its constituent amino acids. When the amino acids cannot form these interactions, the protein cannot fold by itself and needs chaperones. Notably, chaperones do not relay any additional information required for the folding of polypeptides; the native conformation of a protein is determined solely by its amino acid sequence. Chaperones catalyze protein folding without being a part of the folded protein.
The...
The...
Conservation of Protein Domains Over Different Proteins
Protein domains are small structurally independent units that are part of a single amino acid chain. Although these domains are often structurally independent, they may rely on synergistic effects to perform their functions as part of a larger protein. Protein domains may be conserved within the same organism, as well as across different organisms.
A limited set of protein domains often duplicate and recombine during evolution. These domains can be organized in different combinations to form...
A limited set of protein domains often duplicate and recombine during evolution. These domains can be organized in different combinations to form...

