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. 2007 Mar;71(1):13–35. doi: 10.1128/MMBR.00030-06

FIG. 5.

FIG. 5.

Schematic representation of the head-on and codirectional collisions between replication and transcription in bacteria. The replication fork (trombone view), which moves from left to right, is on the left (leading- and lagging-strand DNA polymerases are shown as ovals; the DNA helicase DnaB is shown as a hexagon). The RNA polymerase with the nascent transcript is on the right. In the case of head-on collision (A), the RNA polymerase transcribes the lagging-strand template; in the case of codirectional collision (B), the RNA polymerase transcribes the leading-strand template.