TABLE 1.

Behavior of rRNA H68 as observed in structures of SA50S and SA70S incubated at 37°C for different time durations

Ribosome subunit	Incubation time (min)	H68 behavior	PDB ID	Structure name
SA50S	0	No movement	6HMA	SA50S_0
SA50S	30	No movement	7ASM	SA50S_30
SA50S	50	Movement	7ASN	SA50S_50
SA70S (ancestor complex)	0	No movement	5TCU	SA70S_0
SA70S	30	No movement	7ASO	SA70S_30
SA70S	50	Movement	7ASP	SA70S_50