Figure 18-4: Diagram of the relationship between the T4 transcriptional pattern and the different mechanisms of DNA replication and recombination. The upper panel shows the transcripts initiated from early, middle and late promoters by sequentially modified host RNA polymerase. Hairpins in several early and middle transcripts inhibit translation of the late genes present on these mRNAs. The lower panel depicts the pathways of DNA replication and recombination detailed in this review. Hatched lines represent strands of homologous regions of DNA and the arrows point to possible positions of endonuclease cuts. Replication can be only initiated from cuts marked by filled arrows Cuts indicated by open arrows cannot be used to initiate replication forks. Modified from (279). (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 18-1, Figure 18-2, Figure 18-3, Figure 18-4, Figure 18-5, Figure 18-6, Figure 18-7, Figure 18-8

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