Figure 1
Sections through a model and cryo-EM maps of human apoferritin. (a) Section through a model of human apoferritin. (b) Section as in (a) through a cryo-EM map (EMDB EMD-20026) at a resolution of 1.8 Å, scaled as described in the text. (c) Section as in (b) through a half-map (EMDB EMD-20028) at a resolution of 3.1 Å. (d) Difference between the maps in (c) and (b). (e) Local standard deviation of the maps in (b) (yellow; labeled scaled high-resolution map), (c) (blue dots; labeled low-resolution map) and (d) (red; labeled error map) in radial shells around the centers of the maps. The origin of each map is at its center (the center of symmetry is also at the center of each map). The contour levels in (b) and (c) are at 0.65 times the r.m.s. of the maps and that in (d) is at 1.4 times the r.m.s. of the map. The scale in (e) is arbitrary but is the same for all three maps. All maps were drawn with UCSF Chimera (Pettersen et al., 2004). |