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Related Concept Videos

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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Related Experiment Video

Updated: May 31, 2026

Bimolecular Fluorescence Complementation
08:54

Bimolecular Fluorescence Complementation

Published on: April 15, 2011

Bimolecular fluorescence complementation: illuminating cellular protein interactions.

S Ventura1

  • 1Institut de Biotecnologia i de Biomedicina, Departament de Bioquímica i Biologia Molecular, Universitat Autònoma de Barcelona, 08193 Bellaterra, Barcelona, Spain. salvador.ventura@uab.es

Current Molecular Medicine
|June 29, 2011
PubMed
Summary
This summary is machine-generated.

Protein-fragment complementation assays (PCA) and bimolecular fluorescence complementation (BIFC) visualize protein interactions in living cells. These methods are vital for understanding cellular networks and have applications in drug discovery and disease research.

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Last Updated: May 31, 2026

Bimolecular Fluorescence Complementation
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Photoactivated Localization Microscopy with Bimolecular Fluorescence Complementation (BiFC-PALM)

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Area of Science:

  • Cellular Biology
  • Biochemistry
  • Molecular Biology

Background:

  • Cellular processes rely on protein interactions, necessitating methods to study these in vivo.
  • Understanding protein interaction networks is key to deciphering biological information flow.
  • Protein-fragment complementation assays (PCA) detect protein proximity within cells.

Purpose of the Study:

  • To review the fundamentals of PCA and bimolecular fluorescence complementation (BIFC).
  • To discuss the implementation and applications of BIFC assays.
  • To highlight BIFC's utility in various research fields.

Main Methods:

  • Bimolecular fluorescence complementation (BIFC) enables noninvasive imaging of protein binding.
  • BIFC offers high spatial resolution without exogenous substrates.
  • PCA and BIFC report on protein proximity at specific cellular locations and times.

Main Results:

  • BIFC provides a powerful tool for visualizing protein-protein interactions in real-time.
  • The review covers the principles and practical aspects of BIFC assays.
  • Selected applications demonstrate BIFC's versatility.

Conclusions:

  • BIFC is a valuable technique for studying protein interactions in living systems.
  • Its applications span drug discovery, developmental biology, and neurological disorder research.
  • BIFC contributes to a deeper understanding of cellular signaling and networks.