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Labeling DNA Probes03:31

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Related Experiment Video

Updated: Jun 26, 2026

Split Hybridization Probe Utilizing a DNA Fluorescent Light-up Aptamer as a Signal Reporter for Sequence-Specific Nucleic Acid Analysis
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Fluorescent pteridine probes for nucleic acid analysis.

Mary E Hawkins1

  • 1National Institutes of Health, National Cancer Institute, Bethesda, MD 20892, USA.

Methods in Enzymology
|January 21, 2009
PubMed
Summary
This summary is machine-generated.

This study explores fluorescent pteridine analogs like 3-methylguanine (3MI) and 6-methylguanine (6MI), and 6-map, used for labeling DNA. These probes offer versatile applications in oligonucleotide research and detection.

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Area of Science:

  • Biophysical Chemistry
  • Molecular Biology
  • Oligonucleotide Synthesis

Background:

  • Fluorescent labeling is crucial for oligonucleotide probes.
  • Pteridine derivatives offer unique photophysical properties for biological applications.
  • Guanine and adenine analogs serve as valuable fluorescent markers.

Purpose of the Study:

  • To detail the use of fluorescent pteridine guanine analogs (3MI, 6MI) and a pteridine adenine analog (6MAP).
  • To provide an overview of oligonucleotide fluorescent labeling methods utilizing pteridines.
  • To review the fluorescence characteristics and applications of these probes in DNA.

Main Methods:

  • Characterization of pteridine probes as monomers and within DNA sequences.
  • Analysis of fluorescence intensity, anisotropy, and time-resolved fluorescence.
  • Exploration of advanced techniques like two-photon excitation and single-molecule detection.

Main Results:

  • Pteridine analogs exhibit distinct fluorescence properties when free and incorporated into DNA.
  • Various applications demonstrate the utility of these probes in studying DNA structure and dynamics.
  • Methods discussed enable sensitive detection and characterization of labeled oligonucleotides.

Conclusions:

  • Fluorescent pteridine analogs are versatile tools for oligonucleotide research.
  • These probes facilitate diverse applications in biophysical and molecular biology studies.
  • Advanced fluorescence techniques enhance the capabilities of pteridine-based probes.