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Related Experiment Video

Updated: Aug 30, 2025

DNA Staining Method Based on Formazan Precipitation Induced by Blue Light Exposure

DNA Staining Method Based on Formazan Precipitation Induced by Blue Light Exposure

Published on: January 28, 2018

21 Fluorescent Protein-Based DNA Staining Dyes.

Yurie Tehee Kim¹, Hyesoo Oh¹, Myung Jun Seo¹

¹Department of Chemistry, Sogang University, 35 Baekbeom-ro, Mapogu, Seoul 04107, Korea.

Molecules (Basel, Switzerland)

|August 26, 2022

Summary

Researchers developed 21 fluorescent protein-DNA-binding proteins (FP-DBPs) for visualizing DNA. These novel FP-DBPs offer improved brightness and spectral diversity, guiding future development of DNA-binding fluorescent proteins.

Keywords:

DNA DNA-binding proteins FP-DBP fluorescent protein microfluidic device single-molecule

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Area of Science:

Molecular Biology
Biophysics
Microscopy

Background:

Fluorescent protein-DNA-binding proteins (FP-DBPs) are essential tools for visualizing large DNA molecules using fluorescence microscopy.
Optimizing FP-DBPs requires careful selection of fluorescent proteins (FPs) and DNA-binding domains (DBDs).

Purpose of the Study:

To construct and evaluate 21 distinct FP-DBPs with diverse fluorescent proteins and DNA-binding motifs.
To establish guidelines for developing novel, high-performance FP-DBPs for DNA visualization.

Main Methods:

Selected bright and spectrally diverse fluorescent proteins from FPbase.org.
Utilized high mobility group (HMG) peptides and truncated transcription activator-like effectors (tTALE) as DNA-binding motifs.
Constructed 21 FP-DBP variants and analyzed their DNA staining efficiency, brightness, and DNA stretching properties.

Main Results:

Most of the 21 constructed FP-DBPs successfully visualized DNA molecules.
The arrangement of the fluorescent protein and DNA-binding domain influenced DNA staining brightness and stretching.
Different fluorescent protein types impacted the DNA staining patterns observed.

Conclusions:

The study provides valuable data on the performance of various FP-DBPs, offering a practical guide for selecting or designing optimal constructs.
This work facilitates the development of advanced fluorescent tools for DNA research and imaging.