Table 2 Effect of exogenous supplemented pyrimidines on growth of ΔargR strains. Overnight cultures were grown in minimal media with exogenously-supplemented L-arginine (230 μM). Cultures were washed in arginine-free minimal media and replica-plated onto minimal plates supplemented with exogenous cytosine, thymine and uracil. Growth was scored after overnight incubation at 37°C. "-" no growth on the plates after 24 hours incubation

From: Stationary phase expression of the arginine biosynthetic operon argCBH in Escherichia coli