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Related Concept Videos

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Different fluorescence-based techniques are used to study the protein dynamics in living cells. These techniques include FRAP, FRET, and PET.
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DNA probes are fragments of DNA labeled with a reporter tag to enable their detection or purification. The resulting labeled DNA probes can then hybridize to target nucleic acid sequences through complementary base-pairing, and may be used to recover or identify these regions.
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Related Experiment Video

Updated: Mar 14, 2026

Single-Molecule Tracking Microscopy - A Tool for Determining the Diffusive States of Cytosolic Molecules
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Single-Molecule Tracking and Its Application in Biomolecular Binding Detection.

Cong Liu1, Yen-Liang Liu1, Evan P Perillo1

  • 1University of Texas at Austin, Austin, TX 78703 USA.

IEEE Journal of Selected Topics in Quantum Electronics : a Publication of the IEEE Lasers and Electro-Optics Society
|September 24, 2016
PubMed
Summary
This summary is machine-generated.

Single-molecule tracking (SMT) microscopy observes biomolecules in real time. Advanced SMT techniques offer 3D tracking and fluorescence lifetime, enabling deeper biological insights.

Keywords:
FRETHILOPSF engineeringTCSPCTIRFfluorescence imagingfluorescence lifetimelight-sheet microscopymaximum likelihood estimationsingle-molecule tracking

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Area of Science:

  • Biophysics
  • Cell Biology
  • Microscopy

Background:

  • Single-molecule detection allows real-time observation of biomolecules under physiological conditions.
  • Single-molecule tracking (SMT) microscopy visualizes individual biomolecule motion in living systems.
  • Recent SMT advancements include 3D tracking and fluorescence lifetime measurements.

Purpose of the Study:

  • To review various single-molecule tracking (SMT) techniques.
  • To highlight a novel 3D SMT system with ultrahigh spatiotemporal resolution and extended working depth.
  • To discuss current challenges and future strategies in SMT.

Main Methods:

  • Review of existing single-molecule tracking (SMT) microscopy techniques.
  • Description of a newly developed next-generation 3D tracking system.
  • Discussion of multiparameter detection capabilities (e.g., fluorescence lifetime).

Main Results:

  • SMT enables detailed analysis of biomolecule localization dynamics and transport.
  • Advanced SMT provides multiparameter detection for molecular interaction studies.
  • The new 3D SMT system offers high resolution and depth for live animal imaging.

Conclusions:

  • Advanced SMT techniques significantly enhance our ability to study biomolecular behavior.
  • The developed 3D SMT system is suitable for complex live imaging applications.
  • Addressing current SMT challenges will further advance biological research.