Related Experiment Video
Updated: Jun 12, 2025

Investigating Protein Sequence-structure-dynamics Relationships with Bio3D-web
Published on: July 16, 2017
Modeling Conformational Transitions of Biomolecules from Atomic Force Microscopy Images using Normal Mode Analysis
Xuan Wu1, Osamu Miyashita2, Florence Tama1,2,3
1Department of Physics, Graduate School of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8601, Japan.
High-speed atomic force microscopy (HS-AFM) offers insights into biomolecular motion. A new computational method, NMFF-AFM, enhances HS-AFM image analysis for atomistic models of molecular dynamics.
Area of Science:
- Biophysics
- Computational Biology
- Microscopy
Background:
- Observing single biomolecules is crucial for understanding biological mechanisms.
- High-speed atomic force microscopy (HS-AFM) visualizes biomolecular motion in near-native conditions.
- HS-AFM's spatial resolution is limited by the cantilever tip, hindering atomic-level detail acquisition.
Purpose of the Study:
- To develop a novel computational algorithm for deriving atomistic models of conformational dynamics from HS-AFM images.
- To overcome the resolution limitations of HS-AFM for detailed molecular analysis.
- To provide a user-friendly tool for biophysical studies utilizing HS-AFM data.
Main Methods:
- A new computational algorithm, NMFF-AFM, was developed.
- Normal-mode analysis was employed to represent molecular motions with limited coordinates.
- The algorithm was validated using synthetic data from three proteins with significant conformational changes.
Main Results:
- The NMFF-AFM algorithm successfully derives atomistic models of conformational dynamics from HS-AFM images.
- The method mitigates overinterpretation issues associated with low-resolution AFM data.
- Demonstrated effectiveness on proteins exhibiting substantial conformational variability.
Conclusions:
- NMFF-AFM is a fast, user-friendly computational tool for analyzing HS-AFM data.
- The algorithm enhances the ability to obtain atomic details of biomolecular conformational dynamics.
- NMFF-AFM has the potential to significantly advance biophysical studies using HS-AFM.
More Related Videos
10:23Time-Resolved Fluorescence Anisotropy from Single Molecules for Characterizing Local Flexibility in Biomolecules
Published on: April 25, 2025
14:55Atomic Scale Structural Studies of Macromolecular Assemblies by Solid-state Nuclear Magnetic Resonance Spectroscopy
Published on: September 17, 2017
Related Concept Videos
¹H NMR of Conformationally Flexible Molecules: Temporal Resolution
¹H NMR of Conformationally Flexible Molecules: Variable-Temperature NMR
Newman Projections
The organic molecules rotate across the single bonds leading to numerous temporary three-dimensional structures of varying energy known as...
Molecular Models
Cooperative Allosteric Transitions
Conformations of Cycloalkanes