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Spatiotemporal resolution in high-speed atomic force microscopy for studying biological macromolecules in action
Kenichi Umeda1, Steven J McArthur1, Noriyuki Kodera1
1Nano Life Science Institute (WPI-NanoLSI), Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan.
Microscopy (Oxford, England)
|February 6, 2023
Summary
High-speed atomic force microscopy (HS-AFM) offers real-time visualization of biomolecules without labeling. Improving HS-AFM resolution enhances mechanistic insights into molecular functions.
Area of Science:
- Biophysics
- Molecular Biology
- Microscopy
Background:
- High-speed atomic force microscopy (HS-AFM) enables direct, real-time visualization of biological macromolecules under near-physiological conditions.
- This technique circumvents the need for chemical labeling, offering a more native view of molecular processes.
- Current HS-AFM typically achieves sub-100 ms temporal resolution and 2-3 nm lateral, ~0.1 nm vertical spatial resolution.
Approach:
- This review explains the fundamental principles of HS-AFM operation.
- It details the factors determining the spatiotemporal resolution of HS-AFM experiments.
- The article discusses recent advancements aimed at enhancing HS-AFM resolution.
Key Points:
- HS-AFM provides crucial mechanistic insights into biomolecular dynamics.
- The level of detail obtained is directly dependent on the achieved spatiotemporal resolution.
- Enhanced resolution expands the scope of observable biological phenomena.
Conclusions:
- HS-AFM is a powerful tool for studying biomolecular mechanisms in real-time.
- Continued improvements in HS-AFM resolution are vital for deeper understanding of molecular functions.
- This technique holds significant potential for advancing various fields of biological research.
