Figure 4.

RNA from Pe148.6, which is significantly reduced in a T4motA^am infection of B606 wt at 5 min post-infection, is rescued by a deletion of DksA. (a) Schematic showing T4 map units from 150,727 to 149,509 containing genes rnh and dsbA with the relative positions of the early promoter Pe148.6 and the middle promoter PmdsbA and the primers used for primer extension analyses. Sizes of the expected primer extension products are indicated in nts; (b) Representative gel showing the primer extension products from primers indicated in panel (a). RNA was isolated from T4 wt (+) or T4motA^am (am) infections of strain B606 wt (+) or B606 ΔdksA (−) at 5 or 1 min post-infection.