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. 1986 Apr 11;14(7):2989–3001. doi: 10.1093/nar/14.7.2989

High frequency excision of Ty elements during transformation of yeast.

G Tschumper, J Carbon
PMCID: PMC339716  PMID: 3008102

Abstract

Yeast (Saccharomyces cerevisiae) transposons (Ty elements) are excised from up to 20% of supercoiled plasmids during transformation of yeast cells. The excision occurs by homologous recombination across the direct terminal repeats (deltas) of the Ty element, leaving behind a single delta in the transforming plasmid. Only the initial transforming plasmid is susceptible to excision, and no high frequency excision is observed in plasmids that have become established in transformed cells or in plasmids that are resident in cells undergoing transformation. High frequency excision from plasmids during yeast transformation is not specific for Ty elements and can be observed with other segments of plasmid DNA bounded by direct repeats. The frequency of Ty excision from supercoiled plasmids is greatly reduced when the host yeast cells contain the rad52 mutation, a defect in double-strand DNA repair. When linear or ligated-linear plasmid DNAs containing a Ty element are used for transformation, few or no excision plasmids are found among the transformant colonies. These results suggest that when a yeast cell is transformed with a supercoiled plasmid, the plasmid DNA is highly susceptible to homologous recombination for a short period of time.

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Selected References

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

  1. Beck E., Ludwig G., Auerswald E. A., Reiss B., Schaller H. Nucleotide sequence and exact localization of the neomycin phosphotransferase gene from transposon Tn5. Gene. 1982 Oct;19(3):327–336. doi: 10.1016/0378-1119(82)90023-3. [DOI] [PubMed] [Google Scholar]
  2. Bloom K. S., Carbon J. Yeast centromere DNA is in a unique and highly ordered structure in chromosomes and small circular minichromosomes. Cell. 1982 Jun;29(2):305–317. doi: 10.1016/0092-8674(82)90147-7. [DOI] [PubMed] [Google Scholar]
  3. Boeke J. D., Garfinkel D. J., Styles C. A., Fink G. R. Ty elements transpose through an RNA intermediate. Cell. 1985 Mar;40(3):491–500. doi: 10.1016/0092-8674(85)90197-7. [DOI] [PubMed] [Google Scholar]
  4. Broach J. R., Guarascio V. R., Jayaram M. Recombination within the yeast plasmid 2mu circle is site-specific. Cell. 1982 May;29(1):227–234. doi: 10.1016/0092-8674(82)90107-6. [DOI] [PubMed] [Google Scholar]
  5. Broach J. R., Strathern J. N., Hicks J. B. Transformation in yeast: development of a hybrid cloning vector and isolation of the CAN1 gene. Gene. 1979 Dec;8(1):121–133. doi: 10.1016/0378-1119(79)90012-x. [DOI] [PubMed] [Google Scholar]
  6. Cameron J. R., Loh E. Y., Davis R. W. Evidence for transposition of dispersed repetitive DNA families in yeast. Cell. 1979 Apr;16(4):739–751. doi: 10.1016/0092-8674(79)90090-4. [DOI] [PubMed] [Google Scholar]
  7. Chaleff D. T., Fink G. R. Genetic events associated with an insertion mutation in yeast. Cell. 1980 Aug;21(1):227–237. doi: 10.1016/0092-8674(80)90130-0. [DOI] [PubMed] [Google Scholar]
  8. Clarke L., Carbon J. Isolation of a yeast centromere and construction of functional small circular chromosomes. Nature. 1980 Oct 9;287(5782):504–509. doi: 10.1038/287504a0. [DOI] [PubMed] [Google Scholar]
  9. Eibel H., Philippsen P. Preferential integration of yeast transposable element Ty into a promoter region. 1984 Jan 26-Feb 1Nature. 307(5949):386–388. doi: 10.1038/307386a0. [DOI] [PubMed] [Google Scholar]
  10. Elder R. T., Loh E. Y., Davis R. W. RNA from the yeast transposable element Ty1 has both ends in the direct repeats, a structure similar to retrovirus RNA. Proc Natl Acad Sci U S A. 1983 May;80(9):2432–2436. doi: 10.1073/pnas.80.9.2432. [DOI] [PMC free article] [PubMed] [Google Scholar]
  11. Elder R. T., St John T. P., Stinchcomb D. T., Davis R. W., Scherer S., Davis R. W. Studies on the transposable element Ty1 of yeast. I. RNA homologous to Ty1. II. Recombination and expression of Ty1 and adjacent sequences. Cold Spring Harb Symp Quant Biol. 1981;45(Pt 2):581–591. doi: 10.1101/sqb.1981.045.01.075. [DOI] [PubMed] [Google Scholar]
  12. Errede B., Cardillo T. S., Sherman F., Dubois E., Deschamps J., Wiame J. M. Mating signals control expression of mutations resulting from insertion of a transposable repetitive element adjacent to diverse yeast genes. Cell. 1980 Nov;22(2 Pt 2):427–436. doi: 10.1016/0092-8674(80)90353-0. [DOI] [PubMed] [Google Scholar]
  13. Farabaugh P. J., Fink G. R. Insertion of the eukaryotic transposable element Ty1 creates a 5-base pair duplication. Nature. 1980 Jul 24;286(5771):352–356. doi: 10.1038/286352a0. [DOI] [PubMed] [Google Scholar]
  14. Ito H., Fukuda Y., Murata K., Kimura A. Transformation of intact yeast cells treated with alkali cations. J Bacteriol. 1983 Jan;153(1):163–168. doi: 10.1128/jb.153.1.163-168.1983. [DOI] [PMC free article] [PubMed] [Google Scholar]
  15. Jimenez A., Davies J. Expression of a transposable antibiotic resistance element in Saccharomyces. Nature. 1980 Oct 30;287(5785):869–871. doi: 10.1038/287869a0. [DOI] [PubMed] [Google Scholar]
  16. Kingsman A. J., Gimlich R. L., Clarke L., Chinault A. C., Carbon J. Sequence variation in dispersed repetitive sequences in Saccharomyces cerevisiae. J Mol Biol. 1981 Feb 5;145(4):619–632. doi: 10.1016/0022-2836(81)90306-5. [DOI] [PubMed] [Google Scholar]
  17. Kunes S., Botstein D., Fox M. S. Formation of inverted dimer plasmids after transformation of yeast with linearized plasmid DNA. Cold Spring Harb Symp Quant Biol. 1984;49:617–628. doi: 10.1101/sqb.1984.049.01.070. [DOI] [PubMed] [Google Scholar]
  18. Orr-Weaver T. L., Szostak J. W., Rothstein R. J. Yeast transformation: a model system for the study of recombination. Proc Natl Acad Sci U S A. 1981 Oct;78(10):6354–6358. doi: 10.1073/pnas.78.10.6354. [DOI] [PMC free article] [PubMed] [Google Scholar]
  19. Orr-Weaver T. L., Szostak J. W. Yeast recombination: the association between double-strand gap repair and crossing-over. Proc Natl Acad Sci U S A. 1983 Jul;80(14):4417–4421. doi: 10.1073/pnas.80.14.4417. [DOI] [PMC free article] [PubMed] [Google Scholar]
  20. Prakash S., Prakash L., Burke W., Montelone B. A. Effects of the RAD52 Gene on Recombination in SACCHAROMYCES CEREVISIAE. Genetics. 1980 Jan;94(1):31–50. doi: 10.1093/genetics/94.1.31. [DOI] [PMC free article] [PubMed] [Google Scholar]
  21. Rao R. N., Rogers S. G. Plasmid pKC7: a vector containing ten restriction endonuclease sites suitable for cloning DNA segments. Gene. 1979 Sep;7(1):79–82. doi: 10.1016/0378-1119(79)90044-1. [DOI] [PubMed] [Google Scholar]
  22. Ratzkin B., Carbon J. Functional expression of cloned yeast DNA in Escherichia coli. Proc Natl Acad Sci U S A. 1977 Feb;74(2):487–491. doi: 10.1073/pnas.74.2.487. [DOI] [PMC free article] [PubMed] [Google Scholar]
  23. Roeder G. S., Fink G. R. DNA rearrangements associated with a transposable element in yeast. Cell. 1980 Aug;21(1):239–249. doi: 10.1016/0092-8674(80)90131-2. [DOI] [PubMed] [Google Scholar]
  24. Rothstein R. Double-strand-break repair, gene conversion, and postdivision segregation. Cold Spring Harb Symp Quant Biol. 1984;49:629–637. doi: 10.1101/sqb.1984.049.01.071. [DOI] [PubMed] [Google Scholar]
  25. Suzuki K., Imai Y., Yamashita I., Fukui S. In vivo ligation of linear DNA molecules to circular forms in the yeast Saccharomyces cerevisiae. J Bacteriol. 1983 Aug;155(2):747–754. doi: 10.1128/jb.155.2.747-754.1983. [DOI] [PMC free article] [PubMed] [Google Scholar]
  26. Tschumper G., Carbon J. Copy number control by a yeast centromere. Gene. 1983 Aug;23(2):221–232. doi: 10.1016/0378-1119(83)90054-9. [DOI] [PubMed] [Google Scholar]
  27. Tschumper G., Carbon J. Delta sequences and double symmetry in a yeast chromosomal replicator region. J Mol Biol. 1982 Apr 5;156(2):293–307. doi: 10.1016/0022-2836(82)90330-8. [DOI] [PubMed] [Google Scholar]
  28. Tschumper G., Carbon J. Sequence of a yeast DNA fragment containing a chromosomal replicator and the TRP1 gene. Gene. 1980 Jul;10(2):157–166. doi: 10.1016/0378-1119(80)90133-x. [DOI] [PubMed] [Google Scholar]
  29. Webster T. D., Dickson R. C. Direct selection of Saccharomyces cerevisiae resistant to the antibiotic G418 following transformation with a DNA vector carrying the kanamycin-resistance gene of Tn903. Gene. 1983 Dec;26(2-3):243–252. doi: 10.1016/0378-1119(83)90194-4. [DOI] [PubMed] [Google Scholar]
  30. Williamson V. M., Young E. T., Ciriacy M. Transposable elements associated with constitutive expression of yeast alcohol dehydrogenase II. Cell. 1981 Feb;23(2):605–614. doi: 10.1016/0092-8674(81)90156-2. [DOI] [PubMed] [Google Scholar]

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