Table 3.

The incidences of the NtC classes with significant standardized Pearson residuals (SPR) values found in the selected ribosome crystal and cryo-electron microscopy structures. Positive SPR values indicate overpopulation of an NtC in the X-ray structures

NtC	X-ray	Cryo-EM	SPR
AA00	8415	9768	3.1
AA03	299	96	12.4
AA04	996	732	10.4
AA08	3109	4586	−9.4
AA06	176	331	−4.8
AB05	425	403	3.5
OP03	66	154	−4.6
OP04	147	96	4.8
NANT	6933	8926	−4.9
Rest of NtCs	3426	3829	--
Sum	23 992	28 921	--