Figure 4From: Effect of polyamines and synthetic polyamine-analogues on the expression of antizyme (AtoC) and its regulatory genesThe effect of each polyamine alone PUT, DAP, SPD and SPM in the transcription of the atoC gene in E. coli strain MA255. Increasing concentrations of each polyamine were added in the growth medium (see Methods) and the transcriptional activity of the reporter construct pCPG6(atoC-lacZ) was measured by assaying β-galactosidase activity.Back to article page