Figure 1.

PvuII transcripts. A. The diagram indicates the expected transcripts early or later after the PvuII genes enter a new host cell. The timing is inferred from in vivo transcript mapping in the presence or absence of active C.PvuII [7], and following synchronous infection of cells with bacteriophage carrying the PvuII genes [28]. "C boxes" are the binding sites for the autogenously-activating C protein. The two pvuIIM (methyltransferase) promoters appear to be constitutive. B. The ribosome-binding (Shine-Dalgarno) sequences are predicted based on location relative to the pvuIIC start codon (shaded green), and comparison to the Logo for ribosome binding sites adapted from [32].