Fig. 2. Maximal ppGpp levels are higher in cells lacking 6S RNA.
Nucleotides extracted by formic acid from cells grown in RDM
containing [32P]orthophosphate were separated by TLC. Relative
[32P]ppGpp levels are given in arbitrary intensity units as quantified
on a Typhoon phosphorimager. A typical dataset with means of
replicates of each cell type is shown: wild-type cells (RLG3499;
lower line) and cells lacking 6S RNA (ssrS1; KW348; upper line).
Error bars, SD.