MapQ is a tool for assessing how well atomic model features are resolved in cryoEM maps. 

A fitted model is used in the analysis. A Q-score is calculated for each atom in the model. Q-scores can then be:

• used to visualize how well each residue/atom is resolved, and/or
• averaged to represent the entire model/map.

For more technical details, please see the following:

• G. Pintilie, K. Zhang, Z. Su, S. Li, M.F. Schmid, W. Chiu, “Measurement of Atom Resolvability in CryoEM Maps with Q-scores,” bioRxiv 722991 (2019). doi:10.1101/722991

MapQ is available as a plugin to UCSF Chimera.

• Download
• Tutorial

Email gregp@slac.stanford.edu with questions, suggestions etc.