Related Experiment Videos
Essential spaces defined by NMR structure ensembles and molecular dynamics simulation show significant overlap
R Abseher1, L Horstink, C W Hilbers
1European Molecular Biology Laboratory, Heidelberg, Germany.
Proteins
|June 17, 1998
Summary
Standard protein structure calculation methods can capture large protein motions, especially when using a modified selection criterion. This improves conformational sampling and analysis of correlated motion in protein dynamics.
Area of Science:
- Biophysics
- Structural Biology
- Computational Biology
Background:
- Large, concerted protein motions are crucial for protein dynamics.
- Understanding these motions is key to comprehending protein function.
Purpose of the Study:
- To evaluate if standard structure calculation techniques capture essential protein motions.
- To compare these motions with long-time molecular dynamics (MD) trajectories.
Main Methods:
- Principal Component Analysis (PCA) of protein motion.
- Comparison of eigenvector inner products between NMR and MD ensembles.
- Analysis of beta-spectrin PH domain and single-stranded DNA binding protein (ssDBP).
Main Results:
- Standard techniques show significant overlap with MD essential spaces.
- The overlap was exceptionally high for ssDBP.
- A modified selection criterion improved conformational sampling for correlated motions.
Conclusions:
- Standard structure calculation methods, particularly with a refined selection criterion, can effectively capture essential protein dynamics.
- This approach enhances the accuracy of conformational sampling and analysis of correlated motions.