Cryo-EM model validation using independent map reconstructions

TitleCryo-EM model validation using independent map reconstructions
Publication TypeJournal Article
Year of Publication2013
AuthorsDiMaio, F., Zhang J., Chiu W., & Baker D.
JournalProtein science : a publication of the Protein Society
Date Published2013 Jun
KeywordsCollaborative Publication

An increasing number of cryo-electron microscopy (cryo-EM) density maps are being generated with suitable resolution to trace the protein backbone and guide sidechain placement. Generating and evaluating atomic models based on such maps would be greatly facilitated by independent validation metrics for assessing the fit of the models to the data. We describe such a metric based on the fit of atomic models with independent test maps from single particle reconstructions not used in model refinement. The metric provides a means to determine the proper balance between the fit to the density and model energy and stereochemistry during refinement, and is likely to be useful in determining values of model building and refinement metaparameters quite generally.


Alternate JournalProtein Sci.
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