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. 1975 Jul;16(1):94–100. doi: 10.1128/jvi.16.1.94-100.1975

Role of gene 2 in bacteriophage T7 DNA synthesis.

M S Center
PMCID: PMC354636  PMID: 1133879

Abstract

Studies have been carried out to elucidate the in vivo function of gene 2 in T7 DNA synthesis. In gene 2-infected cells the rate of incorporation of (3-H)thymidine into acid-insoluble material is about 60% that of cells infected with T7 wild type. Gene 2 mutants do not however produce viable phage after infection of the nonpermissive host. In T7 wild type-infected cells, a major portion of the newly alkaline sucrose gradients. The concatemers serve as precursors for the formation of mature T7 DNA as demonstrated in pulse-chase experiments. In similar studies carried out with gene 2-infected cells, concatemers are not detected when the intracellular DNA is analyzed at several different times during the infection process. The DNA made during a gene 2 infection is present as duplex structures with a sedimentation rate close to mature T7 DNA.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

  1. Anderson E. H. Growth Requirements of Virus-Resistant Mutants of Escherichia Coli Strain "B". Proc Natl Acad Sci U S A. 1946 May;32(5):120–128. doi: 10.1073/pnas.32.5.120. [DOI] [PMC free article] [PubMed] [Google Scholar]
  2. Barbour S. D., Clark A. J. Biochemical and genetic studies of recombination proficiency in Escherichia coli. I. Enzymatic activity associated with recB+ and recC+ genes. Proc Natl Acad Sci U S A. 1970 Apr;65(4):955–961. doi: 10.1073/pnas.65.4.955. [DOI] [PMC free article] [PubMed] [Google Scholar]
  3. Carlson K. Intracellular fate of deoxyribonucleic acid from T7 bacteriophages. J Virol. 1968 Oct;2(10):1230–1233. doi: 10.1128/jvi.2.10.1230-1233.1968. [DOI] [PMC free article] [PubMed] [Google Scholar]
  4. Center M. S. Bacteriophage T7 DNA synthesis in isolated DNA-membrane complexes. J Virol. 1973 Oct;12(4):847–854. doi: 10.1128/jvi.12.4.847-854.1973. [DOI] [PMC free article] [PubMed] [Google Scholar]
  5. Center M. S., Richardson C. C. An endonuclease induced after infection of Escherichia coli with bacteriophage T7. I. Purification and properties of the enzyme. J Biol Chem. 1970 Dec 10;245(23):6285–6291. [PubMed] [Google Scholar]
  6. Dressler D., Wolfson J., Magazin M. Initiation and reinitiation of DNA synthesis during replication of bacteriophage T7. Proc Natl Acad Sci U S A. 1972 Apr;69(4):998–1002. doi: 10.1073/pnas.69.4.998. [DOI] [PMC free article] [PubMed] [Google Scholar]
  7. Enquist L. W., Skalka A. Replication of bacteriophage lambda DNA dependent on the function of host and viral genes. I. Interaction of red, gam and rec. J Mol Biol. 1973 Apr 5;75(2):185–212. doi: 10.1016/0022-2836(73)90016-8. [DOI] [PubMed] [Google Scholar]
  8. Goldmark P. J., Linn S. An endonuclease activity from Escherichia coli absent from certain rec- strains. Proc Natl Acad Sci U S A. 1970 Sep;67(1):434–441. doi: 10.1073/pnas.67.1.434. [DOI] [PMC free article] [PubMed] [Google Scholar]
  9. Kelly T. J., Jr, Thomas C. A., Jr An intermediate in the replication of bacteriophage T7 DNA molecules. J Mol Biol. 1969 Sep 28;44(3):459–475. doi: 10.1016/0022-2836(69)90373-8. [DOI] [PubMed] [Google Scholar]
  10. Kerr C., Sadowski P. D. Packaging and maturation of DNA of bacteriophage T7 in vitro. Proc Natl Acad Sci U S A. 1974 Sep;71(9):3545–3549. doi: 10.1073/pnas.71.9.3545. [DOI] [PMC free article] [PubMed] [Google Scholar]
  11. Naot Y., Shalitin C. Defective concatemer formation in cells infected with deoxyribonucleic acid-delay mutants of bacteriophage T4. J Virol. 1972 Oct;10(4):858–862. doi: 10.1128/jvi.10.4.858-862.1972. [DOI] [PMC free article] [PubMed] [Google Scholar]
  12. Pacumbaba R. P., Center M. S. Association of replicating bacteriophage T7 DNA with bacterial membranes. J Virol. 1973 Oct;12(4):855–861. doi: 10.1128/jvi.12.4.855-861.1973. [DOI] [PMC free article] [PubMed] [Google Scholar]
  13. Ritchie D. A., Thomas C. A., Jr, MacHattie L. A., Wensink P. C. Terminal repetition in non-permuted T3 and T7 bacteriophage DNA molecules. J Mol Biol. 1967 Feb 14;23(3):365–376. doi: 10.1016/s0022-2836(67)80111-6. [DOI] [PubMed] [Google Scholar]
  14. Sadowski P. D., Kerr C. Degradation of Escherichia coli B deoxyribonucleic acid after infection with deoxyribonucleic acid-defective amber mutants of bacteriophage T7. J Virol. 1970 Aug;6(2):149–155. doi: 10.1128/jvi.6.2.149-155.1970. [DOI] [PMC free article] [PubMed] [Google Scholar]
  15. Sakaki Y. Inactivation of the ATP-dependent DNase of Escherichia coli after infection with double-stranded DNA phages. J Virol. 1974 Dec;14(6):1611–1612. doi: 10.1128/jvi.14.6.1611-1612.1974. [DOI] [PMC free article] [PubMed] [Google Scholar]
  16. Sakaki Y., Karu A. E., Linn S., Echols H. Purification and properties of the gamma-protein specified by bacteriophage lambda: an inhibitor of the host RecBC recombination enzyme. Proc Natl Acad Sci U S A. 1973 Aug;70(8):2215–2219. doi: 10.1073/pnas.70.8.2215. [DOI] [PMC free article] [PubMed] [Google Scholar]
  17. Schlegel R. A., Thomas C. A., Jr Some special structural features of intracellular bacteriophage T7 concatemers. J Mol Biol. 1972 Jul 21;68(2):319–345. doi: 10.1016/0022-2836(72)90216-1. [DOI] [PubMed] [Google Scholar]
  18. Serwer P. Fast sedimenting bacteriophage T7 DNA from T7-infected Escherichia coli. Virology. 1974 May;59(1):70–88. doi: 10.1016/0042-6822(74)90207-4. [DOI] [PubMed] [Google Scholar]
  19. Strätling W., Krause E., Knippers R. Fast sedimenting deoxyribonucleic acid in bacteriophage T7-infected cells. Virology. 1973 Jan;51(1):109–119. doi: 10.1016/0042-6822(73)90371-1. [DOI] [PubMed] [Google Scholar]
  20. Studier F. W. Bacteriophage T7. Science. 1972 Apr 28;176(4033):367–376. doi: 10.1126/science.176.4033.367. [DOI] [PubMed] [Google Scholar]
  21. Studier F. W. The genetics and physiology of bacteriophage T7. Virology. 1969 Nov;39(3):562–574. doi: 10.1016/0042-6822(69)90104-4. [DOI] [PubMed] [Google Scholar]
  22. Wackernagel W., Hermanns U. Inhibition of exonuclease V after infection of E. coli by bacteriophage T7. Biochem Biophys Res Commun. 1974 Sep 23;60(2):521–527. doi: 10.1016/0006-291x(74)90271-x. [DOI] [PubMed] [Google Scholar]
  23. Watson J. D. Origin of concatemeric T7 DNA. Nat New Biol. 1972 Oct 18;239(94):197–201. doi: 10.1038/newbio239197a0. [DOI] [PubMed] [Google Scholar]
  24. Wolfson J., Dressler D., Magazin M. Bacteriophage T7 DNA replication: a linear replicating intermediate (gradient centrifugation-electron microscopy-E. coli-DNA partial denaturation). Proc Natl Acad Sci U S A. 1972 Feb;69(2):499–504. doi: 10.1073/pnas.69.2.499. [DOI] [PMC free article] [PubMed] [Google Scholar]
  25. Wolfson J., Dressler D. Regions of single-stranded DNA in the growing points of replicating bacteriophage T7 chromosomes. Proc Natl Acad Sci U S A. 1972 Sep;69(9):2682–2686. doi: 10.1073/pnas.69.9.2682. [DOI] [PMC free article] [PubMed] [Google Scholar]

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