Geometric filtering of pairwise atomic interactions applied to the design of efficient statistical potentials

Distance-dependent, pairwise, statistical potentials are based on the concept that the packing observed in known protein structures can be used as a reference for comparing different 3D models for a protein. Here, packing refers to the set of all pairs of atoms in the molecule. Among all methods dev...

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Published inComputer aided geometric design Vol. 23; no. 6; pp. 531 - 544
Main Authors Zomorodian, Afra, Guibas, Leonidas, Koehl, Patrice
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.08.2006
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Abstract Distance-dependent, pairwise, statistical potentials are based on the concept that the packing observed in known protein structures can be used as a reference for comparing different 3D models for a protein. Here, packing refers to the set of all pairs of atoms in the molecule. Among all methods developed to assess three-dimensional models, statistical potentials are subject both to praise for their power of discrimination, and to criticism for the weaknesses of their theoretical foundations. Classical derivations of pairwise potentials assume statistical independence of all pairs of atoms. This assumption, however, is not valid in general. We show that we can filter the list of all interactions in a protein to generate a much smaller subset of pairs that retains most of the structural information contained in proteins. The filter is based on a geometric method called alpha shapes that captures the packing in a conformation. Statistical scoring functions derived from such subsets perform as well as scoring functions derived from the set of all pairwise interactions.
AbstractList Distance-dependent, pairwise, statistical potentials are based on the concept that the packing observed in known protein structures can be used as a reference for comparing different 3D models for a protein. Here, packing refers to the set of all pairs of atoms in the molecule. Among all methods developed to assess three-dimensional models, statistical potentials are subject both to praise for their power of discrimination, and to criticism for the weaknesses of their theoretical foundations. Classical derivations of pairwise potentials assume statistical independence of all pairs of atoms. This assumption, however, is not valid in general. We show that we can filter the list of all interactions in a protein to generate a much smaller subset of pairs that retains most of the structural information contained in proteins. The filter is based on a geometric method called alpha shapes that captures the packing in a conformation. Statistical scoring functions derived from such subsets perform as well as scoring functions derived from the set of all pairwise interactions.
Distance-dependent, pairwise, statistical potentials are based on the concept that the packing observed in known protein structures can be used as a reference for comparing different 3D models for a protein. Here, packing refers to the set of all pairs of atoms in the molecule. Among all methods developed to assess three-dimensional models, statistical potentials are subject both to praise for their power of discrimination, and to criticism for the weaknesses of their theoretical foundations. Classical derivations of pairwise potentials assume statistical independence of all pairs of atoms. This assumption, however, is not valid in general. We show that we can filter the list of all interactions in a protein to generate a much smaller subset of pairs that retains most of the structural information contained in proteins. The filter is based on a geometric method called alpha shapes that captures the packing in a conformation. Statistical scoring functions derived from such subsets perform as well as scoring functions derived from the set of all pairwise interactions.
Author Zomorodian, Afra
Koehl, Patrice
Guibas, Leonidas
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Issue 6
Keywords Delaunay
Statistical potentials
Alpha shape
Geometric filtering
Protein structure
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  publication-title: J. Comp. Biol
  doi: 10.1089/cmb.1996.3.213
– volume: 5
  start-page: 1676
  year: 1996
  ident: 10.1016/j.cagd.2006.03.002_bib015
  article-title: Hydrophobic regions on protein surfaces: derivation of the solvation energy from their area distribution in crystallographic protein structures
  publication-title: Protein Sci.
  doi: 10.1002/pro.5560050821
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Snippet Distance-dependent, pairwise, statistical potentials are based on the concept that the packing observed in known protein structures can be used as a reference...
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SubjectTerms Alpha shape
Delaunay
Geometric filtering
Protein structure
Statistical potentials
Title Geometric filtering of pairwise atomic interactions applied to the design of efficient statistical potentials
URI https://dx.doi.org/10.1016/j.cagd.2006.03.002
https://www.proquest.com/docview/29273284
Volume 23
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