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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...
Molecular Chaperones and Protein Folding03:00

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...
Directing Proteins to the Rough Endoplasmic Reticulum01:34

Directing Proteins to the Rough Endoplasmic Reticulum

The organelle-specific signaling sequences direct proteins synthesized in the cytosol to their final destination like ER, mitochondria, peroxisomes, etc. Some of the proteins directed to ER are then trafficked via vesicles to other organelles within the cell or the extracellular environment through the Golgi complex. For example, the rough ER synthesizes soluble proteins for transportation to the lysosomes or secretion out of the cell. It can also synthesize transmembrane proteins that can...
Protein Dynamics in Living Cells01:19

Protein Dynamics in Living Cells

Different fluorescence-based techniques are used to study the protein dynamics in living cells. These techniques include FRAP, FRET, and PET.
Fluorescent recovery after photobleaching (FRAP) is a fluorescent-protein-based detection technique used to quantify protein movement rates within the cell. This method exposes a small portion of the cell to an intense laser beam. The laser beam causes permanent photobleaching of the fluorophore-tagged proteins in the exposed region. As the bleached...

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小分子安定剤を介してダイナミックなタンパク質をオーダーする.

Ningkun Wang1, Chinmay Y Majmudar, William C Pomerantz

  • 1Program in Chemical Biology, University of Michigan, Ann Arbor, Michigan 48109, United States.

Journal of the American Chemical Society
|February 7, 2013
PubMed
まとめ

研究者は,GACKIXドメインを安定化するためにテザリングを使用し,その構造的特徴づけを可能にしました. この方法は,CBP/p300コアクティベータのような構成的に柔軟なタンパク質を調節する小分子を発見するのに役立ちます.

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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 14, 2026

OaAEP1-Mediated Enzymatic Synthesis and Immobilization of Polymerized Protein for Single-Molecule Force Spectroscopy
08:34

OaAEP1-Mediated Enzymatic Synthesis and Immobilization of Polymerized Protein for Single-Molecule Force Spectroscopy

Published on: February 5, 2020

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07:10

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

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科学分野:

  • バイオケミストリー バイオケミストリー
  • 構造生物学 構造生物学とは
  • 分子生物学は分子生物学である.

背景:

  • CBP/p300のGACKIXドメインは,さまざまな転写活性化剤を結合するマスターコアクティベーターです.
  • その形状的動態は,構造的特徴化に課題をもたらす.
  • これらのダイナミクスを理解することは,転写調節の解読に不可欠です.

研究 の 目的:

  • ダイナミックな GACKIX ドメインを構造的に特徴づけるという課題を克服するために.
  • 構造研究のために,GACKIXドメインを安定させる小分子を特定する.
  • 形状的に可塑性のあるタンパク質に対するテザリング戦略の有用性を探求する.

主な方法:

  • テザリングのリガンド発見戦略を利用して,安定する小分子断片を特定しました.
  • 小分子で複合したGACKIXドメインの結晶学的な特徴づけを行いました.
  • 得られた構造に分子動力学シミュレーションを実施した.

主要な成果:

  • GACKIXドメインを安定させる小分子断片を成功裏に特定しました.
  • 2.0 Å解像度でGACKIXドメインの最初の結晶学的な特徴付けを達成しました.
  • 分子ダイナミクスは,多様な結合パートナーを収容するために不可欠なサイドチェーン運動を明らかにしました.

結論:

  • テザリング戦略は,構造的に柔軟なタンパク質を安定させ,構造的特徴化を容易にするのに有効です.
  • このアプローチは,CBP/p300のようなタンパク質のための小分子調節体の発見を加速します.
  • この発見は,GACKIXドメインによるアクティベーター結合のメカニズムについての洞察を提供します.