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Protein Dynamics in Living Cells

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...

Reporter Genes

Reporter Genes

Reporter genes are a type of protein-coding gene that are often tagged to a gene of interest. Once inside a target cell, reporter genes usually produce visually identifiable characteristics like fluorescence and luminescence when expressed along with the gene of interest. Thus, reporter genes “report” the presence or absence of genes of interest in an organism, determine the gene expression pattern, or track the physical location of a DNA segment or protein in the cell.

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Updated: May 7, 2026

Photoconversion of Purified Fluorescent Proteins and Dual-probe Optical Highlighting in Live Cells

Photoconversion of Purified Fluorescent Proteins and Dual-probe Optical Highlighting in Live Cells

Published on: June 26, 2010

光学的に調節可能な青色光タンパク質.

Amy E Jablonski¹, Russell B Vegh, Jung-Cheng Hsiang

¹School of Chemistry and Biochemistry, ‡School of Chemical and Biomolecular Engineering, and §Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology , Atlanta, Georgia 30332-0400, United States.

Journal of the American Chemical Society

|October 9, 2013

まとめ

この要約は機械生成です。

エンジニアリングされた青色光タンパク質 (BFPs) は,二重レーザー刺激を使用して光学的に調節することができます. このダークステートエンジニアリングは,BFPの放出を動的に制御し,背景騒音を軽減することにより,信号差別を改善します.

さらに関連する動画

An Optogenetic Method to Control and Analyze Gene Expression Patterns in Cell-to-cell Interactions

An Optogenetic Method to Control and Analyze Gene Expression Patterns in Cell-to-cell Interactions

Published on: March 22, 2018

Rapid Optimization of a Light-Inducible System to Control Mammalian Gene Expression

Rapid Optimization of a Light-Inducible System to Control Mammalian Gene Expression

Published on: November 4, 2025

関連する実験動画

Last Updated: May 7, 2026

Photoconversion of Purified Fluorescent Proteins and Dual-probe Optical Highlighting in Live Cells

Photoconversion of Purified Fluorescent Proteins and Dual-probe Optical Highlighting in Live Cells

Published on: June 26, 2010

An Optogenetic Method to Control and Analyze Gene Expression Patterns in Cell-to-cell Interactions

An Optogenetic Method to Control and Analyze Gene Expression Patterns in Cell-to-cell Interactions

Published on: March 22, 2018

Rapid Optimization of a Light-Inducible System to Control Mammalian Gene Expression

Rapid Optimization of a Light-Inducible System to Control Mammalian Gene Expression

Published on: November 4, 2025

科学分野:

バイオケミストリーバイオケミストリー
分子生物学は分子生物学である.
バイオフォトニクスバイオフォトニクス

背景:

青色光タンパク質 (BFP) は,タンパク質のダイナミクスを視覚化するために不可欠です.
高度な自動光背景と不良な信号差別は,BFPのユーティリティを制限する.

研究の目的:

信号差別を強化した調節可能な青色光タンパク質 (BFP) を設計する.
BFPイメージングにおける高い背景と低い信号明晰さの制限を克服するために.

主な方法:

二重レーザー刺激を用いて,BFPの明るい状態と,光誘導による暗い状態を標的とした.
BFP染色体を取り囲む残基に変異を導入し,光学変調を可能にしました.
中性シス型とアニオン型トランス染色体形態の間の一時的な光変換を調査した.

主要な成果:

エンジニアリングされたBFPは,緑色の共照明による青色の放射のダイナミックな調節を示します.
変異は,ミリ秒間の暗黒状態の長波長減少を可能にします.
mKalama1における単点変異は,改良された変調深度を持つ変調可能なBFP変異体を生み出した.

結論:

ダークステートエンジニアリングは,BFP光の動的,周波数ベースの調節を可能にします.
調節可能なBFPは,自動光背景に対する信号差別を大幅に改善します.
この進歩は,さまざまな生物画像アプリケーションにおけるBFPの有用性を高めます.