Figure 9-4: Assembly of transcription antitermination complex: N translation repression modes. RNA Pol is shown transcribing from the pL promoter through nutL and the RNase III site (RTS) into the N gene. The antitermination complex is formed first at NUTL (to the right of step 1) and the RTS is transcribed and assembles beyond step 2. If RNaseIII is not immediately present the SD (Shine-Dalgarno) sequence is protected in some way (?) from ribosome binding. If RNaseIII is present, the RTS is processed and allows optimal translation of N. Note the antitermination complex may remain bound to RNA Pol. (for better image quality, click here for tif image, which may be quite large; may also require screen refreshing plus special software to view; or view larger tif in separate window)

Figure 9-1, Figure 9-2, Figure 9-3, Figure 9-4

return to Friedman and Court, Regulation of l Gene Expression by Transcription Termination and Antitermination