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Literature DB >> 2935713

Repair and recombination of nonreplicating UV-irradiated phage DNA in E. coli III. Enhancement of excision repair in UV-treated bacteria.

Abstract

The question of whether induction of the SOS response in Escherichia coli increases the efficiency of excision repair was addressed by measuring repair of UV-damaged nonreplicating lambda phage DNA in previously irradiated bacteria. Prior UV irradiation of lex+ bacteria enhanced both the rate of regeneration of infective phage DNA (about 10-fold) and the rate of cyclobutane dimer removal early in repressed infections. Indirect induction of SOS-regulated repair activities by the nonreplicating irradiated phage DNA itself seemed negligible. Prior bacterial irradiation reduced the frequency of recombination (loss of a tandem chromosomal duplication) of nonreplicating UV-irradiated DNA. In this respect UV-stimulated recombination of nonreplicating DNA differs from RecF-dependent recombination processes that are stimulated by increased SOS expression. Surprisingly, prior UV irradiation of lexA3 bacteria caused a small but reproducible increase in the regeneration of infective phage DNA.

Entities: Chemical Species

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Year: 1985 PMID： 2935713 DOI： 10.1007/bf00331330

Source DB: PubMed Journal: Mol Gen Genet ISSN： 0026-8925

34 in total

7. Dominant mutations (lex) in Escherichia coli K-12 which affect radiation sensitivity and frequency of ultraviolet lght-induced mutations.

Authors: D W Mount; K B Low; S J Edmiston
Journal: J Bacteriol Date: 1972-11 Impact factor: 3.490

1. Recombinagenic processing of UV-light photoproducts in nonreplicating phage DNA by the Escherichia coli methyl-directed mismatch repair system.

Authors: W Y Feng; E H Lee; J B Hays
Journal: Genetics Date: 1991-12 Impact factor: 4.562

2. Indirect stimulation of recombination in Escherichia coli K-12: dependence on recJ, uvrA, and uvrD.

Authors: H E Schellhorn; K B Low
Journal: J Bacteriol Date: 1991-10 Impact factor: 3.490

3. DNA structures generated during recombination initiated by mismatch repair of UV-irradiated nonreplicating phage DNA in Escherichia coli: requirements for helicase, exonucleases, and RecF and RecBCD functions.

Authors: W Y Feng; J B Hays
Journal: Genetics Date: 1995-08 Impact factor: 4.562

4. Effect of a lexA41(Ts) mutation on DNA repair in recA(Def) derivatives of Escherichia coli K-12.

Authors: A K Ganesan; P C Hanawalt
Journal: Mol Gen Genet Date: 1985

5. Repair and recombination of nonreplicating UV-irradiated phage DNA in E. coli II. Stimulation of RecF-dependent recombination by excision repair of cyclobutane pyrimidine dimers and of other photoproducts.

Authors: T A Smith; J B Hays
Journal: Mol Gen Genet Date: 1985

5 in total

Repair and recombination of nonreplicating UV-irradiated phage DNA in E. coli III. Enhancement of excision repair in UV-treated bacteria.

1. The effect of lexA and recF mutations on post-replication repair and DNA synthesis in Escherichia coli K-12.

2. W-reactivation of phage lambda in recF, recL, uvrA, and uvrB mutants of E. coli K-12.

Review 3. Ultraviolet mutagenesis and inducible DNA repair in Escherichia coli.

4. Repair of nonreplicating UV-irradiated DNA: cooperative dark repair by Escherichia coli uvr and phr functions.

5. In vivo regulation of the uvrA gene: role of the "-10" and "-35" promoter regions.

Review 6. The SOS regulatory system of Escherichia coli.

7. Dominant mutations (lex) in Escherichia coli K-12 which affect radiation sensitivity and frequency of ultraviolet lght-induced mutations.

8. Uv-inducible repair II: its role in various defective mutants of Escherichia coli K-12.

9. Effect of suppressors of SOS-mediated filamentation on sfiA operon expression in Escherichia coli.

10. Expression of the E. coli uvrA gene is inducible.

1. Recombinagenic processing of UV-light photoproducts in nonreplicating phage DNA by the Escherichia coli methyl-directed mismatch repair system.

2. Indirect stimulation of recombination in Escherichia coli K-12: dependence on recJ, uvrA, and uvrD.

3. DNA structures generated during recombination initiated by mismatch repair of UV-irradiated nonreplicating phage DNA in Escherichia coli: requirements for helicase, exonucleases, and RecF and RecBCD functions.

4. Effect of a lexA41(Ts) mutation on DNA repair in recA(Def) derivatives of Escherichia coli K-12.

5. Repair and recombination of nonreplicating UV-irradiated phage DNA in E. coli II. Stimulation of RecF-dependent recombination by excision repair of cyclobutane pyrimidine dimers and of other photoproducts.