Figure 3From: Effect of polyamines and synthetic polyamine-analogues on the expression of antizyme (AtoC) and its regulatory genesThe effect of polyamines in the transcription of the atoSC genes in E. coli strain MA255. The E. coli K12 strain MA255 was transformed with plasmids pCPG4(atoS-lacZ), pCPG5(atoA-lacZ) and pCPG6(atoC-lacZ). Polyamine-mediated induction was measured by assaying β-galactosidase expression in the presence of the indicated concentrations of polyamines (in mM).Back to article page