Abstract
Gaps in daughter-strand deoxyribonucleic acid (DNA) synthesized after exposure of wild-type Escherichia coli to ultraviolet light are filled during reincubation. In this study the dnaG, dnaC , and dnaA gene products have been examined for their role in postreplication repair. These gene products are unique in their specific control of certain types of DNA synthesis: initiation of rounds of replication and chain propagation. Initiation of rounds of replication is not essential to gap filling; however, chain propagation by short DNA piece initiation appears to be essential for gap filling.
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