Table 2. Model resolutions for subunits and domains.

Model	Without Ewald correction (Å)	Ewald sphere corrected (Å)	Map sharpening B factor for Ewald (Å2)
30S subunit	2.15	2.11	−25.7
30S subunit head domain	2.09	2.01	−19.7
30S subunit platform	2.12	2.08	−21.8
50S subunit	1.92	1.9	−25.1
50S subunitcentral protuberance	2.28	2.26	−21.5
70S ribosome	2.06	2.04	−29.5

^* Map-vs-model FSC with threshold = 0.5.