Supplementary Figure 4: Model Q-score vs. map grid step. | Nature Methods

Supplementary Figure 4: Model Q-score vs. map grid step.

From: Measurement of atom resolvability in cryo-EM maps with Q-scores

Supplementary Figure 4

The map shown is Apoferritin 3.1Å resolution, EMD:20028. The original map has a step size of 0.6Å. New maps were generated by resampling this map, using tri-linear interpolation, on new grids which cover the same volume but have larger step sizes. The position of all grid points other than the origin (0,0,0) change as a result of this process. Q-scores calculated for the same model (PDB:3ajo, 1473 protein atoms) are very similar for step sizes of 0.6 to 1.2, but start to decrease beyond this point as the step size becomes too large for the resolution of the map (3.1Å).

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