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Lactose operon repressor DNA-directed RNA polymerase subunit beta DNA-directed RNA polymerase subunit alpha DNA-directed RNA polymerase subunit beta' RNA polymerase sigma factor FliA Mutant non-cAMP dependent cAMP receptor protein Mutant non-cAMP dependent cAMP receptor protein Mutant non-cAMP dependent cAMP receptor protein DNA-directed RNA polymerase subunit beta DNA-directed RNA polymerase subunit alpha DNA-directed RNA polymerase subunit beta' RNA polymerase sigma factor FliA DNA-binding transcriptional repressor DNA-binding transcriptional repressor cAMP D-Glucose α-Lactose cAMP cAMP Activator-(CAP) binding site Activator-(CAP) binding site Promoter operator lacZ Promoter operator lacY lacA No Glucose No Lactose
lacI rpoB rpoA rpoC fliA crp(in) crp(in) crp(in) rpoB rpoA rpoC fliA lacI lacI cAMP D-Glucose α-Lactose Activator- (CAP) binding site Activator- (CAP) binding site Promoter operator lacZ Promoter operator lacY lacA