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Visualization of Surface-tethered Large DNA Molecules with a Fluorescent Protein DNA Binding Peptide
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DNA Visualization Using Fluorescent Proteins.

Xuelin Jin1, Y Tehee Kim2, Kyubong Jo3

  • 1College of Agriculture, Yanbian University, Yanji, Jilin Province, China. 0000008832@ybu.edu.cn.

Methods in Molecular Biology (Clifton, N.J.)
|September 15, 2022
PubMed
Summary
This summary is machine-generated.

This chapter details synthesizing DNA binding fluorescent proteins for visualizing single DNA molecules. The protocol covers molecular cloning, staining techniques, and microfluidic visualization for DNA characterization.

Keywords:
CharacteristicsDNA binding fluorescent proteinMicrofluidic deviceSequence-specific stainingSingle-molecule observation

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Area of Science:

  • Biochemistry
  • Molecular Biology
  • Biophysics

Background:

  • Single-molecule visualization techniques are crucial for understanding DNA at a fundamental level.
  • DNA binding fluorescent proteins offer a promising avenue for high-resolution imaging of DNA structures.
  • Existing methods may lack the specificity or resolution required for detailed DNA characterization.

Purpose of the Study:

  • To provide a comprehensive protocol for synthesizing and utilizing DNA binding fluorescent proteins.
  • To enable visualization and characterization of single DNA molecules with high precision.
  • To demonstrate advanced staining and microscopic techniques for single-molecule DNA analysis.

Main Methods:

  • Stepwise molecular cloning procedures for creating custom DNA binding fluorescent proteins.
  • Development of reversible and two-color staining protocols for multiplexed DNA visualization.
  • Implementation of sequence-specific staining for targeted DNA labeling.
  • Microscopic visualization of single DNA molecules within a microfluidic device.

Main Results:

  • Successful synthesis of functional DNA binding fluorescent proteins.
  • Demonstration of effective reversible and two-color staining of DNA molecules.
  • Achieved sequence-specific fluorescent labeling of DNA.
  • High-resolution visualization of single DNA molecules in a microfluidic setup.

Conclusions:

  • The developed protocol facilitates robust single-molecule visualization of DNA.
  • DNA binding fluorescent proteins are effective tools for detailed DNA characterization.
  • This method advances the field of single-molecule biophysics and molecular diagnostics.