articleProteins Structure Function and BioinformaticsJan 8, 2003Closed access

Structure validation by Cα geometry: ϕ,ψ and Cβ deviation

University of Cambridge · Duke University · +2 more institutions

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Abstract

Geometrical validation around the Calpha is described, with a new Cbeta measure and updated Ramachandran plot. Deviation of the observed Cbeta atom from ideal position provides a single measure encapsulating the major structure-validation information contained in bond angle distortions. Cbeta deviation is sensitive to incompatibilities between sidechain and backbone caused by misfit conformations or inappropriate refinement restraints. A new phi,psi plot using density-dependent smoothing for 81,234 non-Gly, non-Pro, and non-prePro residues with B

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Authors

8

Topics & keywords

Keywords
  • Ramachandran plot
  • Measure (data warehouse)
  • Plot (graphics)
  • Position (finance)
  • Crystallography
  • Turn (biochemistry)
  • Smoothing
  • Molecular geometry
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