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Updated: Feb 5, 2026
09:18
Photobleaching Assays FRAP & FLIP to Measure Chromatin Protein Dynamics in Living Embryonic Stem Cells
Published on: June 29, 2011
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The Development and Enhancement of FRAP as a Key Tool for Investigating Protein Dynamics
Jennifer Lippincott-Schwartz1, Erik Lee Snapp1, Robert D Phair2
1Janelia Research Campus, Howard Hughes Medical Institute, Ashburn, Virginia.
Biophysical Journal
|September 17, 2018
Summary
Fluorescence recovery after photobleaching (FRAP) revolutionized cell biology by quantifying protein mobility. Advancements in GFP and microscopy expanded FRAP
Area of Science:
- Cellular Biology
- Biophysics
- Microscopy
Background:
- The classic 1976 Axelrod et al. study introduced fluorescence photobleaching recovery (FRAP).
- FRAP provided the foundation for quantifying protein mobility and mobile fractions.
- Early work laid the experimental and theoretical groundwork for photobleaching experiments.
Purpose of the Study:
- To review pivotal Fluorescence Recovery After Photobleaching (FRAP) studies.
- To highlight how technical developments transformed cellular biology.
- To showcase the evolution of FRAP and its impact on understanding cell dynamics.
Main Methods:
- Review of seminal FRAP studies and their impact.
- Analysis of technological advancements (GFP, confocal microscopy).
- Examination of the theoretical and experimental groundwork of FRAP.
Main Results:
- FRAP enabled quantitative measurement of protein mobility and diffusion rates.
- GFP technology and confocal microscopy significantly expanded FRAP's applications.
- FRAP catalyzed interdisciplinary exchange, transforming cellular dynamics models.
Conclusions:
- FRAP has been pivotal in advancing cellular biology.
- Technological innovations have continuously expanded FRAP's capabilities.
- Current models of cell dynamics are built upon FRAP-derived insights.
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