Co-Authors:
Rosner, A., Department of Biochemistry, Tel-Aviv University, Tel-Aviv, Israel
Yagil, E., Department of Biochemistry, Tel-Aviv University, Tel-Aviv, Israel
Abstract:
The effect of deoxyadenosine (AdR) and 5-fluorodeoxyuridine (FUdR) on the incorporation of 5-bromodeoxyuridine (BUdR) into DNA of thymine-non requiring cells of Escherichia coli was studied. This incorporation renders the cells sensitive to irradiation at near-UV light. It was found that the combination of AdR and FUdR increases incorporation of BUdR and sensitivity to irradiation. An enrichment of auxotrophs by a factor of 105 was obtained from a mixed population grown in minimal medium containing BUdR, AdR and FUdR and irradiated subsequently. © 1970 Springer-Verlag.