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Related Experiment Videos

Dynamics of folded proteins.

J A McCammon, B R Gelin, M Karplus

    Nature
    |June 16, 1977
    PubMed
    Summary
    This summary is machine-generated.

    Protein atom dynamics were simulated using equations of motion. Results indicate a fluid-like protein interior, with local atomic motions exhibiting diffusional characteristics.

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    Area of Science:

    • Biophysics
    • Computational Biology
    • Protein Dynamics

    Background:

    • Understanding protein dynamics is crucial for comprehending protein function.
    • Globular proteins possess complex internal structures and motions.

    Purpose of the Study:

    • To investigate the atomic-level dynamics of a folded globular protein.
    • To characterize fluctuations and their decay around the average protein structure.

    Main Methods:

    • Solving equations of motion for protein atoms.
    • Utilizing an empirical potential energy function for simulations.

    Main Results:

    • Quantified the magnitude, correlations, and decay of atomic fluctuations.
    • Observed diffusional character in local atomic motions within the protein.

    Conclusions:

    • The interior of bovine pancreatic trypsin inhibitor exhibits fluid-like properties.
    • Atomic-level simulations provide insights into protein internal mobility.