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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...

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Updated: Jul 7, 2026

Effect of Fluorescent Proteins on Fusion Partners Using Polyglutamine Toxicity Assays in Yeast

Effect of Fluorescent Proteins on Fusion Partners Using Polyglutamine Toxicity Assays in Yeast

Published on: November 28, 2018

Fluorescent proteins for cell biology.

George H Patterson¹

¹Cell Biology and Metabolism Branch, National Institute of Child Health and Human Development, National Institutes of Health, USA.

Methods in Molecular Biology (Clifton, N.J.)

|February 22, 2008

Summary

Fluorescent proteins enable researchers to visualize cellular components using fluorescence microscopy. This chapter reviews various fluorescent proteins, detailing their features and suitability for biological imaging applications.

Area of Science:

Cell biology
Biochemistry
Microscopy

Background:

Fluorescence microscopy is crucial for observing cellular structures.
Exogenous labels like antibodies and synthetic fluorophores have been traditionally used.
Fluorescent proteins have revolutionized cellular and subcellular imaging.

Purpose of the Study:

To introduce the diverse range of fluorescent proteins available.
To discuss the characteristics of various fluorescent proteins.
To evaluate the pros and cons of different fluorescent proteins for imaging.

Main Methods:

Review of existing literature on fluorescent proteins.
Analysis of spectral properties and photophysical characteristics.
Comparative assessment of applications in fluorescence microscopy.

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A Fluorescence Fluctuation Spectroscopy Assay of Protein-Protein Interactions at Cell-Cell Contacts

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A Fluorescence Fluctuation Spectroscopy Assay of Protein-Protein Interactions at Cell-Cell Contacts

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Main Results:

Detailed overview of fluorescent proteins across the spectrum.
Discussion of factors influencing protein selection (e.g., brightness, photostability, spectral range).
Identification of specific advantages and limitations for different imaging techniques.

Conclusions:

Fluorescent proteins offer versatile tools for cellular imaging.
Understanding protein characteristics is key to successful experimental design.
Continued development promises enhanced capabilities for biological research.