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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: Jul 5, 2026

Probing The Structure And Dynamics Of Nucleosomes Using Atomic Force Microscopy Imaging
09:52

Probing The Structure And Dynamics Of Nucleosomes Using Atomic Force Microscopy Imaging

Published on: January 31, 2019

Chromatin dynamics during interphase explored by single-particle tracking.

Valeria Levi1, Enrico Gratton

  • 1Laboratorio de Electrónica Cuántica, Departamento de Física, Universidad de Buenos Aires, Pabellón I Ciudad Universitaria, 1428, Buenos Aires, Argentina.

Chromosome Research : an International Journal on the Molecular, Supramolecular and Evolutionary Aspects of Chromosome Biology
|May 8, 2008
PubMed
Summary
This summary is machine-generated.

Recent advances reveal the nucleus is highly organized, with chromatin structure crucial for gene regulation. Single-particle tracking (SPT) in living cells provides new insights into chromatin dynamics and nuclear organization.

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A Multilabel Single Molecule Localization Microscopy Protocol for Investigation of Chromatin in the Dense Nuclear Environment
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A Multilabel Single Molecule Localization Microscopy Protocol for Investigation of Chromatin in the Dense Nuclear Environment

Published on: June 5, 2026

Related Experiment Videos

Last Updated: Jul 5, 2026

Probing The Structure And Dynamics Of Nucleosomes Using Atomic Force Microscopy Imaging
09:52

Probing The Structure And Dynamics Of Nucleosomes Using Atomic Force Microscopy Imaging

Published on: January 31, 2019

A Multilabel Single Molecule Localization Microscopy Protocol for Investigation of Chromatin in the Dense Nuclear Environment
08:49

A Multilabel Single Molecule Localization Microscopy Protocol for Investigation of Chromatin in the Dense Nuclear Environment

Published on: June 5, 2026

Area of Science:

  • Cell Biology
  • Molecular Biology
  • Genetics

Background:

  • The interphase nucleus, once viewed as unstructured, is now understood as a highly organized organelle.
  • Chromatin organization within the nucleus is critical for gene regulation, but mechanisms of organization and locus positioning remain unclear.

Purpose of the Study:

  • To review recent advances in understanding chromatin dynamics in the interphase nucleus.
  • To highlight the contributions of single-particle tracking (SPT) experiments to this field.

Main Methods:

  • Utilizing bacterial operator sequences and fluorescent proteins to tag specific chromosome sites.
  • Employing advanced fluorescence imaging techniques for real-time observation of tagged loci in living cells.
  • Analyzing the motion of tagged chromatin loci using single-particle tracking (SPT) and trajectory analysis.

Main Results:

  • SPT experiments have provided quantitative insights into the dynamics of chromatin loci.
  • These studies reveal how chromatin organization is achieved and how loci positions change within the nucleus.
  • Two-photon excitation microscopy offers advantages for SPT studies of chromatin dynamics.

Conclusions:

  • Single-particle tracking is a powerful technology for elucidating chromatin dynamics.
  • Understanding chromatin dynamics is essential for comprehending nuclear function and gene regulation.
  • Continued advancements in imaging and tracking methodologies will further enhance our knowledge of nuclear organization.