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. 1975 Mar;121(3):1208–1210. doi: 10.1128/jb.121.3.1208-1210.1975

Correlation Between Thymineless Elimination and Absence of hsp II (EcoRII) Specificity in N-Group R Factors

Jean H Birks 1, R J Pinney 1
PMCID: PMC246055  PMID: 1090598

Abstract

Examination of R factors from 12 different compatibility groups shows that thymineless elimination is apparently confined to N-group plasmids that lack the hsp II (EcoRII) restriction specificity.

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Selected References

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

  1. Bannister D., Glover S. W. Restriction and modification of bacteriophages by R+ strains of Escherichia coli K12. Biochem Biophys Res Commun. 1968 Mar 27;30(6):735–738. doi: 10.1016/0006-291x(68)90575-5. [DOI] [PubMed] [Google Scholar]
  2. Bannister D., Glover S. W. The isolation and properties of non-restricting mutants of two different host specificities associated with drug resistance factors. J Gen Microbiol. 1970 Apr;61(1):63–71. doi: 10.1099/00221287-61-1-63. [DOI] [PubMed] [Google Scholar]
  3. Chabbert Y. A., Scavizzi M. R., Witchitz J. L., Gerbaud G. R., Bouanchaud D. H. Incompatibility groups and the classification of fi - resistance factors. J Bacteriol. 1972 Nov;112(2):666–675. doi: 10.1128/jb.112.2.666-675.1972. [DOI] [PMC free article] [PubMed] [Google Scholar]
  4. Coetzee J. N., Datta N., Hedges R. W. R factors from Proteus rettgeri. J Gen Microbiol. 1972 Oct;72(3):543–552. doi: 10.1099/00221287-72-3-543. [DOI] [PubMed] [Google Scholar]
  5. Datta N., Hedges R. W. Compatibility groups among fi - R factors. Nature. 1971 Nov 26;234(5326):222–223. doi: 10.1038/234222a0. [DOI] [PubMed] [Google Scholar]
  6. Drabble W. T., Stocker B. A. R (transmissible drug-resistance) factors in Salmonella typhimurium: pattern of transduction by phage P22 and ultraviolet-protection effect. J Gen Microbiol. 1968 Aug;53(1):109–123. doi: 10.1099/00221287-53-1-109. [DOI] [PubMed] [Google Scholar]
  7. Freifelder D., Folkmanis A., Kirschner I. Studies on Escherichia coli sex factors: evidence that covalent circles exist within cells and the general problem of isolation of covalent circles. J Bacteriol. 1971 Mar;105(3):722–727. doi: 10.1128/jb.105.3.722-727.1971. [DOI] [PMC free article] [PubMed] [Google Scholar]
  8. Grindley N. D., Grindley J. N., Anderson E. S. R factor compatibility groups. Mol Gen Genet. 1972;119(4):287–297. doi: 10.1007/BF00272087. [DOI] [PubMed] [Google Scholar]
  9. Hedges R. W., Datta N., Coetzee J. N., Dennison S. R factors from Proteus morganii. J Gen Microbiol. 1973 Aug;77(2):249–259. doi: 10.1099/00221287-77-2-249. [DOI] [PubMed] [Google Scholar]
  10. Hedges R. W., Datta N., Kontomichalou P., Smith J. T. Molecular specificities of R factor-determined beta-lactamases: correlation with plasmid compatibility. J Bacteriol. 1974 Jan;117(1):56–62. doi: 10.1128/jb.117.1.56-62.1974. [DOI] [PMC free article] [PubMed] [Google Scholar]
  11. Hedges R. W. Phenotypic characterization of fi- R factors determining the restriction and modification hsp II specificity. Mol Gen Genet. 1972;115(3):225–233. doi: 10.1007/BF00268886. [DOI] [PubMed] [Google Scholar]
  12. Khatoon H., Iyer R. V. Stable coexistence of Rfi factors in Escherichia coli. Can J Microbiol. 1971 May;17(5):669–675. doi: 10.1139/m71-108. [DOI] [PubMed] [Google Scholar]
  13. Pinney R. J., Bremer K., Smith J. T. R factor elimination by inhibitors of thymidylate synthetase (fluorodeoxyuridine and showdomycin) and the occurrence of single strand breaks in plasmid DNA. Mol Gen Genet. 1974;133(2):163–174. doi: 10.1007/BF00264837. [DOI] [PubMed] [Google Scholar]
  14. Pinney R. J., Smith J. T. Curing of an R factor Escherichia coli by trimethoprim. Antimicrob Agents Chemother. 1973 Jun;3(6):670–676. doi: 10.1128/aac.3.6.670. [DOI] [PMC free article] [PubMed] [Google Scholar]
  15. Pinney R. J., Smith J. T. R factor elimination during thymine starvation: effects of inhibition of protein synthesis and readdition of thymine. J Bacteriol. 1972 Aug;111(2):361–367. doi: 10.1128/jb.111.2.361-367.1972. [DOI] [PMC free article] [PubMed] [Google Scholar]
  16. Pinney R. J., Smith J. T. R-factor elimination by thymine starvation. Genet Res. 1971 Oct;18(2):173–177. doi: 10.1017/s001667230001257x. [DOI] [PubMed] [Google Scholar]
  17. STACEY K. A., SIMSON E. IMPROVED METHOD FOR THE ISOLATION OF THYMINE-REQUIRING MUTANTS OF ESCHERICHIA COLI. J Bacteriol. 1965 Aug;90:554–555. doi: 10.1128/jb.90.2.554-555.1965. [DOI] [PMC free article] [PubMed] [Google Scholar]
  18. Smith H. O., Nathans D. Letter: A suggested nomenclature for bacterial host modification and restriction systems and their enzymes. J Mol Biol. 1973 Dec 15;81(3):419–423. doi: 10.1016/0022-2836(73)90152-6. [DOI] [PubMed] [Google Scholar]
  19. Tweats D. J., Pinney R. J., Smith J. T. R-factor-mediated nuclease activity involved in thymineless elimination. J Bacteriol. 1974 Jun;118(3):790–795. doi: 10.1128/jb.118.3.790-795.1974. [DOI] [PMC free article] [PubMed] [Google Scholar]

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