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  DNA synthesis in nucleotide-permeable Escherichia coli cells: II. Synthesis of replicative form DNA of phage φX174

Dürwald, H., & Hoffmann-Berling, H. (1971). DNA synthesis in nucleotide-permeable Escherichia coli cells: II. Synthesis of replicative form DNA of phage φX174. Journal of Molecular Biology (London), 58(3), 755-773. doi:10.1016/0022-2836(71)90038-6.

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 Urheber:
Dürwald, Hildegard1, Autor           
Hoffmann-Berling, Hartmut2, Autor           
Affiliations:
1Max Planck Institute for Medical Research, Max Planck Society, ou_1125545              
2Department of Molecular Biology, Max Planck Institute for Medical Research, Max Planck Society, ou_1497702              

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 Zusammenfassung: scherichia coli cells were treated with mitomycin C to suppress host DNA synthesis, infected for five minutes with bacteriophage φX174, made permeable to nucleotides by treatment with ether and allowed to synthesize DNA from exogenous deoxynucleoside triphosphates. The product was 70 to 80% replicative form (RF) DNA of the phage according to sedimentation and annealing properties. RF synthesis occurred at the normal level in DNA polymerase-deficient cells and did not occur in these cells when they were infected with a gene VI amber mutant of the virus, which in the living cells does not replicate beyond the first RF. The structure of intermediates of RF synthesis in ether-treated cells is thought to be basically consistent with the rolling circle model of RF replication proposed by Knippers, Whalley & Sinsheimer (1969). In addition, the results suggest that a temporary interruption exists in the complementary strand just ahead of the growth point. Complementary strand material, and possibly also viral strand material, exists early after synthesis as short pieces having only a small fraction of the viral length. These pieces are subsequently joined together but can be induced to accumulate. This accumulation is suppressed by 0.2 mm-dATP but not detectably by any of the other deoxynucleoside triphosphates in high concentration, or by ATP or DNA ligase cofactor. Label in RF can be chased up to 80% into supertwisted molecules.

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Sprache(n): eng - English
 Datum: 1970-08-081971-02-222004-11-031971-06-28
 Publikationsstatus: Erschienen
 Seiten: 19
 Ort, Verlag, Ausgabe: -
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 Art der Begutachtung: Expertenbegutachtung
 Identifikatoren: DOI: 10.1016/0022-2836(71)90038-6
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Titel: Journal of Molecular Biology (London)
  Andere : J Mol Biol
Genre der Quelle: Zeitschrift
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Ort, Verlag, Ausgabe: London : Academic Press
Seiten: - Band / Heft: 58 (3) Artikelnummer: - Start- / Endseite: 755 - 773 Identifikator: ISSN: 0022-2836
CoNE: https://pure.mpg.de/cone/journals/resource/954922646042