the specific stable rna gene activity ( rs/rt , the rate of rrna and trna synthesis relative to the total instantaneous rate of rna synthesis ) was found to decrease from 1.0 at a ppgpp concentration of 0 ( extrapolated value ) to 0.24 at saturating concentrations of ppgpp ( above 100 pmoles per optical density at 460 nm unit of cell mass ) .
C0035668
rna
C0035701
rrna