since the gene 2 product acts as a specific inhibitor of e. coli rna polymerase by preventing the enzyme from binding t7 dna , uninhibited e. coli rna polymerase in gene 2 mutant phage-infected cells interacts with concatemeric t7 dna and perturbs proper dna processing unless another inhibitor of the enzyme ( rifampin ) was added .
C1257941
concatemeric
C0012854
dna