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

@article{Lovell2003StructureVB,
title={Structure validation by C$\alpha$ geometry: ϕ,$\psi$ and C$\beta$ deviation},
author={Simon C. Lovell and Ian W. Davis and W. Bryan Arendall and Paul I. W. de Bakker and J. Michael Word and Michael G. Prisant and Jane S. Richardson and David C. Richardson},
journal={Proteins: Structure},
year={2003},
volume={50}
}
Geometrical validation around the Cα is described, with a new Cβ measure and updated Ramachandran plot. Deviation of the observed Cβ atom from ideal position provides a single measure encapsulating the major structure‐validation information contained in bond angle distortions. Cβ deviation is sensitive to incompatibilities between sidechain and backbone caused by misfit conformations or inappropriate refinement restraints. A new ϕ,ψ plot using density‐dependent smoothing for 81,234 non‐Gly, non… Expand
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