Molecular processes studied at a single-molecule level using DNA origami nanostructures and atomic force microscopy

Area of Science:

• Nanotechnology
• Biophysics
• Molecular Biology

Background:

• DNA origami enables precise spatial arrangement of diverse functional elements.
• Atomic Force Microscopy (AFM) provides high-resolution imaging for nanoscale investigations.
• Studying molecular processes at the single-molecule level is crucial for understanding biological mechanisms.

Purpose of the Study:

• To provide an overview of recent advances in single-molecule investigations.
• To highlight the application of AFM in studying functionalized DNA origami.
• To showcase the potential of this technique for molecular process analysis.

Main Methods:

• Fabrication of DNA origami nanostructures with precise functional entity placement.
• Utilizing Atomic Force Microscopy (AFM) for high-resolution visualization.
• Applying functionalized DNA origami substrates for single-molecule experiments.

Main Results:

• Demonstrated precise arrangement of proteins, DNA structures, nanoparticles, and chemical modifications.
• Visualized molecular processes including chemical reactions and enzymatic activity using AFM.
• Enabled detailed analysis of electron-induced bond breaking and DNA conformational changes.

Conclusions:

• Functionalized DNA origami serves as a powerful platform for single-molecule investigations.
• AFM is a key technique for visualizing and analyzing molecular events on these nanostructures.
• This approach significantly advances the study of molecular dynamics and interactions.