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Related Experiment Videos

The contour-buildup algorithm to calculate the analytical molecular surface

M Totrov1, R Abagyan

  • 1Skirball Instiutte of Biomolecular Medicine, NYU Medical Center, New York 10016, USA.

Journal of Structural Biology
|January 1, 1996
PubMed
Summary

A novel algorithm efficiently computes analytical molecular surfaces by building contours on van der Waals spheres. This method significantly reduces computational resources and time for molecular surface calculations.

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Area of Science:

  • Computational chemistry
  • Molecular modeling
  • Biophysics

Background:

  • Calculating molecular surfaces is crucial for understanding molecular interactions.
  • Existing algorithms, like Connolly's, can be computationally intensive.
  • The analytical molecular surface, a smooth envelope, requires efficient calculation methods.

Purpose of the Study:

  • To introduce a new, efficient algorithm for calculating the analytical molecular surface.
  • To reduce memory and time requirements for surface area computations.
  • To enhance the efficiency of partial molecular surface calculations.

Main Methods:

  • The algorithm sequentially builds multi-arc contours on van der Waals spheres.
  • It utilizes a "local" contour-buildup principle for efficiency.

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  • The method handles both convex and concave triangular patches, including complex intersections.

    • Main Results:

    • The algorithm achieves substantial reductions in memory and time for surface calculations.
    • It enables efficient computation of partial molecular surfaces.
    • A 100-residue protein surface is calculated in approximately 2 seconds.
    • Performance scales nearly linearly with protein size.

    Conclusions:

    • The new contour-buildup algorithm offers a significant speed improvement over the original Connolly algorithm.
    • This method provides a more efficient and robust approach to analytical molecular surface calculation.
    • The algorithm's efficiency and scalability make it suitable for large biomolecules.