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. 1992 Apr 15;89(8):3236–3240. doi: 10.1073/pnas.89.8.3236

Initiator methionine tRNA is essential for Ty1 transposition in yeast.

K B Chapman 1, A S Byström 1, J D Boeke 1
PMCID: PMC48841  PMID: 1314382

Abstract

The yeast retrotransposon Ty1 transposes through an RNA intermediate by a mechanism similar to that of retroviral reverse transcription and integration. Ty1 RNA contains a putative minus strand primer binding site (-PBS) that is complementary to the 3' acceptor stem of the initiator methionine tRNA (tRNA(iMet)). Here we demonstrate that the tRNA(iMet) is used as a primer for Ty1 reverse transcription. Mutations in the Ty1 element that alter 5 of 10 nucleotides that are complementary to the tRNA(iMet) abolish Ty1 transposition, even though they are silent with regard to Ty1 protein coding. We have constructed a yeast strain lacking wild-type tRNA(iMet) that is dependent on a mutant derivative of tRNA(iMet) that has an altered acceptor stem sequence, engineered to restore homology with the Ty1 -PBS mutant. The compensatory mutations made in the tRNA(iMet) alleviate the transposition defect of the Ty1 -PBS mutant. The mutant and wild-type tRNA(iMet) are enriched within Ty1 virus-like particles irrespective of complementarity to the Ty1 -PBS. Thus, complementarity between the Ty1 -PBS and tRNA(iMet) is essential for transposition but is not necessary for packaging of the tRNA inside virus-like particles.

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Selected References

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

  1. Arkhipova I. R., Mazo A. M., Cherkasova V. A., Gorelova T. V., Schuppe N. G., Llyin Y. V. The steps of reverse transcription of Drosophila mobile dispersed genetic elements and U3-R-U5 structure of their LTRs. Cell. 1986 Feb 28;44(4):555–563. doi: 10.1016/0092-8674(86)90265-5. [DOI] [PubMed] [Google Scholar]
  2. Barat C., Lullien V., Schatz O., Keith G., Nugeyre M. T., Grüninger-Leitch F., Barré-Sinoussi F., LeGrice S. F., Darlix J. L. HIV-1 reverse transcriptase specifically interacts with the anticodon domain of its cognate primer tRNA. EMBO J. 1989 Nov;8(11):3279–3285. doi: 10.1002/j.1460-2075.1989.tb08488.x. [DOI] [PMC free article] [PubMed] [Google Scholar]
  3. Boeke J. D., Corces V. G. Transcription and reverse transcription of retrotransposons. Annu Rev Microbiol. 1989;43:403–434. doi: 10.1146/annurev.mi.43.100189.002155. [DOI] [PubMed] [Google Scholar]
  4. 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]
  5. Boeke J. D., LaCroute F., Fink G. R. A positive selection for mutants lacking orotidine-5'-phosphate decarboxylase activity in yeast: 5-fluoro-orotic acid resistance. Mol Gen Genet. 1984;197(2):345–346. doi: 10.1007/BF00330984. [DOI] [PubMed] [Google Scholar]
  6. Boeke J. D., Xu H., Fink G. R. A general method for the chromosomal amplification of genes in yeast. Science. 1988 Jan 15;239(4837):280–282. doi: 10.1126/science.2827308. [DOI] [PubMed] [Google Scholar]
  7. Byström A. S., Fink G. R. A functional analysis of the repeated methionine initiator tRNA genes (IMT) in yeast. Mol Gen Genet. 1989 Apr;216(2-3):276–286. doi: 10.1007/BF00334366. [DOI] [PubMed] [Google Scholar]
  8. Chapman K. B., Boeke J. D. Isolation and characterization of the gene encoding yeast debranching enzyme. Cell. 1991 May 3;65(3):483–492. doi: 10.1016/0092-8674(91)90466-c. [DOI] [PubMed] [Google Scholar]
  9. Chen H. R., Barker W. C. Nucleotide sequences of the retroviral long terminal repeats and their adjacent regions. Nucleic Acids Res. 1984 Feb 24;12(4):1767–1778. doi: 10.1093/nar/12.4.1767. [DOI] [PMC free article] [PubMed] [Google Scholar]
  10. Cigan A. M., Donahue T. F. The methionine initiator tRNA genes of yeast. Gene. 1986;41(2-3):343–348. doi: 10.1016/0378-1119(86)90118-6. [DOI] [PubMed] [Google Scholar]
  11. Eibel H., Gafner J., Stotz A., Philippsen P. Characterization of the yeast mobile element Ty1. Cold Spring Harb Symp Quant Biol. 1981;45(Pt 2):609–617. doi: 10.1101/sqb.1981.045.01.079. [DOI] [PubMed] [Google Scholar]
  12. Eichinger D. J., Boeke J. D. The DNA intermediate in yeast Ty1 element transposition copurifies with virus-like particles: cell-free Ty1 transposition. Cell. 1988 Sep 23;54(7):955–966. doi: 10.1016/0092-8674(88)90110-9. [DOI] [PubMed] [Google Scholar]
  13. Feinberg A. P., Vogelstein B. "A technique for radiolabeling DNA restriction endonuclease fragments to high specific activity". Addendum. Anal Biochem. 1984 Feb;137(1):266–267. doi: 10.1016/0003-2697(84)90381-6. [DOI] [PubMed] [Google Scholar]
  14. Garfinkel D. J., Boeke J. D., Fink G. R. Ty element transposition: reverse transcriptase and virus-like particles. Cell. 1985 Sep;42(2):507–517. doi: 10.1016/0092-8674(85)90108-4. [DOI] [PubMed] [Google Scholar]
  15. Ghosh G., Pelka H., Schulman L. H. Identification of the tRNA anticodon recognition site of Escherichia coli methionyl-tRNA synthetase. Biochemistry. 1990 Mar 6;29(9):2220–2225. doi: 10.1021/bi00461a003. [DOI] [PubMed] [Google Scholar]
  16. Grandbastien M. A., Spielmann A., Caboche M. Tnt1, a mobile retroviral-like transposable element of tobacco isolated by plant cell genetics. Nature. 1989 Jan 26;337(6205):376–380. doi: 10.1038/337376a0. [DOI] [PubMed] [Google Scholar]
  17. Hill J. E., Myers A. M., Koerner T. J., Tzagoloff A. Yeast/E. coli shuttle vectors with multiple unique restriction sites. Yeast. 1986 Sep;2(3):163–167. doi: 10.1002/yea.320020304. [DOI] [PubMed] [Google Scholar]
  18. Hou Y. M., Schimmel P. A simple structural feature is a major determinant of the identity of a transfer RNA. Nature. 1988 May 12;333(6169):140–145. doi: 10.1038/333140a0. [DOI] [PubMed] [Google Scholar]
  19. Kikuchi Y., Ando Y., Shiba T. Unusual priming mechanism of RNA-directed DNA synthesis in copia retrovirus-like particles of Drosophila. 1986 Oct 30-Nov 5Nature. 323(6091):824–826. doi: 10.1038/323824a0. [DOI] [PubMed] [Google Scholar]
  20. Kunkel T. A. Rapid and efficient site-specific mutagenesis without phenotypic selection. Proc Natl Acad Sci U S A. 1985 Jan;82(2):488–492. doi: 10.1073/pnas.82.2.488. [DOI] [PMC free article] [PubMed] [Google Scholar]
  21. Normanly J., Abelson J. tRNA identity. Annu Rev Biochem. 1989;58:1029–1049. doi: 10.1146/annurev.bi.58.070189.005121. [DOI] [PubMed] [Google Scholar]
  22. Panet A., Haseltine W. A., Baltimore D., Peters G., Harada F., Dahlberg J. E. Specific binding of tryptophan transfer RNA to avian myeloblastosis virus RNA-dependent DNA polymerase (reverse transcriptase). Proc Natl Acad Sci U S A. 1975 Jul;72(7):2535–2539. doi: 10.1073/pnas.72.7.2535. [DOI] [PMC free article] [PubMed] [Google Scholar]
  23. Pfeiffer P., Hohn T. Involvement of reverse transcription in the replication of cauliflower mosaic virus: a detailed model and test of some aspects. Cell. 1983 Jul;33(3):781–789. doi: 10.1016/0092-8674(83)90020-x. [DOI] [PubMed] [Google Scholar]
  24. Prats A. C., Sarih L., Gabus C., Litvak S., Keith G., Darlix J. L. Small finger protein of avian and murine retroviruses has nucleic acid annealing activity and positions the replication primer tRNA onto genomic RNA. EMBO J. 1988 Jun;7(6):1777–1783. doi: 10.1002/j.1460-2075.1988.tb03008.x. [DOI] [PMC free article] [PubMed] [Google Scholar]
  25. Rhim H., Park J., Morrow C. D. Deletions in the tRNA(Lys) primer-binding site of human immunodeficiency virus type 1 identify essential regions for reverse transcription. J Virol. 1991 Sep;65(9):4555–4564. doi: 10.1128/jvi.65.9.4555-4564.1991. [DOI] [PMC free article] [PubMed] [Google Scholar]
  26. Schulman L. H., Pelka H. Anticodon switching changes the identity of methionine and valine transfer RNAs. Science. 1988 Nov 4;242(4879):765–768. doi: 10.1126/science.3055296. [DOI] [PubMed] [Google Scholar]
  27. Sikorski R. S., Boeke J. D. In vitro mutagenesis and plasmid shuffling: from cloned gene to mutant yeast. Methods Enzymol. 1991;194:302–318. doi: 10.1016/0076-6879(91)94023-6. [DOI] [PubMed] [Google Scholar]
  28. Voytas D. F., Ausubel F. M. A copia-like transposable element family in Arabidopsis thaliana. Nature. 1988 Nov 17;336(6196):242–244. doi: 10.1038/336242a0. [DOI] [PubMed] [Google Scholar]
  29. Xu H., Boeke J. D. High-frequency deletion between homologous sequences during retrotransposition of Ty elements in Saccharomyces cerevisiae. Proc Natl Acad Sci U S A. 1987 Dec;84(23):8553–8557. doi: 10.1073/pnas.84.23.8553. [DOI] [PMC free article] [PubMed] [Google Scholar]
  30. Xu H., Boeke J. D. Inhibition of Ty1 transposition by mating pheromones in Saccharomyces cerevisiae. Mol Cell Biol. 1991 May;11(5):2736–2743. doi: 10.1128/mcb.11.5.2736. [DOI] [PMC free article] [PubMed] [Google Scholar]

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