Extended Data Figure 4 Resolution Estimates (a-b) Local resolution estimates computed by Resmap74. (a) Histogram of voxel values, (b) Results in A depicted as a heat map of a cross-section through the reconstruction. (c-d) Fourier Shell Correlation plots for (c) the half-maps with and without symmetry and (d) model-to-map correlations for each sub-region of the structure. E