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Related Experiment Video

Updated: Mar 18, 2026

Visualization of Recombinant DNA and Protein Complexes Using Atomic Force Microscopy

Visualization of Recombinant DNA and Protein Complexes Using Atomic Force Microscopy

Published on: July 18, 2011

A Sensitive and Rapid Method for Mapping Protein Bound to DNA by Atomic Force Microscopy.

M Tanigawa¹, M Machida^1,2, T Okada¹

¹a Joint Research Center for Atom Technology , Higashi 1-1-4, Tsukuba, Ibaraki 305 , Japan.

Bioscience, Biotechnology, and Biochemistry

|July 10, 2016

Summary

We mapped protein binding sites on DNA using atomic force microscopy (AFM). This technique helps identify transcription regulatory regions by distinguishing DNA fragment ends.

Keywords:

DNA mapping DNA-protein complex Spl atomic force microscopy

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Area of Science:

Biophysics
Molecular Biology
Genomics

Background:

Understanding protein-DNA interactions is crucial for gene regulation.
Atomic force microscopy (AFM) offers high-resolution imaging of biomolecules.
Mapping protein binding sites on DNA is essential for studying transcription regulation.

Purpose of the Study:

To develop and validate strategies for mapping protein binding sites on DNA fragments using AFM.
To demonstrate the utility of AFM for identifying transcription regulatory regions.

Main Methods:

Utilized atomic force microscopy (AFM) for high-resolution imaging of DNA fragments.
Developed methods to distinguish the two termini of linear DNA fragments.
Applied AFM scanning to map protein binding sites on DNA.

Main Results:

Successfully mapped unique protein binding sites on DNA fragments.
Distinguished termini of linear DNA fragments to enable precise mapping.
Demonstrated the effectiveness of AFM for rapid, long-range scanning.

Conclusions:

Simple AFM-based strategies provide valuable information on protein-DNA interactions.
This method aids in the identification of transcription regulatory regions.
AFM is a powerful tool for studying molecular mechanisms in genomics.