Figure 2
From: Muropeptides Stimulate Growth Resumption from Stationary Phase in Escherichia coli
Muropeptides stimulate growth resumption of E. coli. (a) Schematic representation of peptidoglycan and muropeptide. NAG – N-acetyl-glucosamine, NAM – N-acetyl-muramic acid. (b) Muropeptides (MPs) but not peptidoglycan (PG) can stimulate growth resumption of stationary phase cells in fresh medium. Different amounts of MP or PG were added to recovering cells and the Δt was calculated. The average and standard error of the mean of four independent experiments are shown. (c) Using mass-spectrometry, different MP variants can be detected from conditioned medium, but not from fresh medium. M4N – anhydromuro-tetrapeptide, M3N – anhydromuro-tripeptide, M5N – anhydromuro-pentapeptide, N.D. – not detected. The values shown are an average of two technical replicates.
