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. 1979 Jun 11;6(7):2483–2497. doi: 10.1093/nar/6.7.2483

The use of R-looping for structural gene identification and mRNA purification.

J L Woolford Jr, M Rosbash
PMCID: PMC327867  PMID: 379820

Abstract

A method is presented for the purification of mRNAs and the identification of structural gene sequences in recombinant DNA molecules. RNA is hybridized to double-stranded linear DNA such that R-loops are formed between most DNAs and their complementary RNA sequences. These R-loops are purified from unhybridized RNAs by gel filtration chromatography in the presence of a high concentration of salt. The complementary RNAs are released from the R-loops by heating, and are assayed by gel electrophoresis or cell free translation to determine their purity and to identify the proteins for which they code. We have demonstrated that recombinant DNAs containing sequences for abundant or moderately abundant mRNAs of Saccharomyces cerevisiae can be identified by this means.

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Selected References

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  1. Berget S. M., Moore C., Sharp P. A. Spliced segments at the 5' terminus of adenovirus 2 late mRNA. Proc Natl Acad Sci U S A. 1977 Aug;74(8):3171–3175. doi: 10.1073/pnas.74.8.3171. [DOI] [PMC free article] [PubMed] [Google Scholar]
  2. Bhargava M. M., Cramer J. H., Halvorson H. O. Isolation of high molecular weight DNA from yeast nuclei. Anal Biochem. 1972 Sep;49(1):276–284. doi: 10.1016/0003-2697(72)90266-7. [DOI] [PubMed] [Google Scholar]
  3. Bonner W. M., Laskey R. A. A film detection method for tritium-labelled proteins and nucleic acids in polyacrylamide gels. Eur J Biochem. 1974 Jul 1;46(1):83–88. doi: 10.1111/j.1432-1033.1974.tb03599.x. [DOI] [PubMed] [Google Scholar]
  4. Casey J., Davidson N. Rates of formation and thermal stabilities of RNA:DNA and DNA:DNA duplexes at high concentrations of formamide. Nucleic Acids Res. 1977;4(5):1539–1552. doi: 10.1093/nar/4.5.1539. [DOI] [PMC free article] [PubMed] [Google Scholar]
  5. Chow L. T., Gelinas R. E., Broker T. R., Roberts R. J. An amazing sequence arrangement at the 5' ends of adenovirus 2 messenger RNA. Cell. 1977 Sep;12(1):1–8. doi: 10.1016/0092-8674(77)90180-5. [DOI] [PubMed] [Google Scholar]
  6. Dudock B. S., Katz G., Taylor E. K., Holley R. W. Primary structure of wheat germ phenylalanine transfer RNA. Proc Natl Acad Sci U S A. 1969 Mar;62(3):941–945. doi: 10.1073/pnas.62.3.941. [DOI] [PMC free article] [PubMed] [Google Scholar]
  7. Gillespie D., Spiegelman S. A quantitative assay for DNA-RNA hybrids with DNA immobilized on a membrane. J Mol Biol. 1965 Jul;12(3):829–842. doi: 10.1016/s0022-2836(65)80331-x. [DOI] [PubMed] [Google Scholar]
  8. Gorenstein C., Warner J. R. Coordinate regulation of the synthesis of eukaryotic ribosomal proteins. Proc Natl Acad Sci U S A. 1976 May;73(5):1547–1551. doi: 10.1073/pnas.73.5.1547. [DOI] [PMC free article] [PubMed] [Google Scholar]
  9. Hastie N. D., Held W. A. Analysis of mRNA populations by cDNA.mRNA hybrid-mediated inhibition of cell-free protein synthesis. Proc Natl Acad Sci U S A. 1978 Mar;75(3):1217–1221. doi: 10.1073/pnas.75.3.1217. [DOI] [PMC free article] [PubMed] [Google Scholar]
  10. Hereford L. M., Rosbash M. Regulation of a set of abundant mRNA sequences. Cell. 1977 Mar;10(3):463–467. doi: 10.1016/0092-8674(77)90033-2. [DOI] [PubMed] [Google Scholar]
  11. Holmes D. S., Cohn R. H., Kedes L. H., Davidson N. Positions of sea urchin (Strongylocentrotus purpuratus) histone genes relative to restriction endonuclease sites on the chimeric plasmids pSp2 and pSp17. Biochemistry. 1977 Apr 5;16(7):1504–1512. doi: 10.1021/bi00626a040. [DOI] [PubMed] [Google Scholar]
  12. Hutchison C. A., 3rd, Edgell M. H. Genetic assay for small fragments of bacteriophage phi X174 deoxyribonucleic acid. J Virol. 1971 Aug;8(2):181–189. doi: 10.1128/jvi.8.2.181-189.1971. [DOI] [PMC free article] [PubMed] [Google Scholar]
  13. Maniatis T., Jeffrey A., van deSande H. Chain length determination of small double- and single-stranded DNA molecules by polyacrylamide gel electrophoresis. Biochemistry. 1975 Aug 26;14(17):3787–3794. doi: 10.1021/bi00688a010. [DOI] [PubMed] [Google Scholar]
  14. Paterson B. M., Roberts B. E., Kuff E. L. Structural gene identification and mapping by DNA-mRNA hybrid-arrested cell-free translation. Proc Natl Acad Sci U S A. 1977 Oct;74(10):4370–4374. doi: 10.1073/pnas.74.10.4370. [DOI] [PMC free article] [PubMed] [Google Scholar]
  15. Petes T. D., Broach J. R., Wensink P. C., Hereford L. M., Fink G. R., Botstein D. Isolation and analysis of recombinant DNA molecules containing yeast DNA. Gene. 1978 Sep;4(1):37–49. doi: 10.1016/0378-1119(78)90013-6. [DOI] [PubMed] [Google Scholar]
  16. 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]
  17. Roberts B. E., Paterson B. M. Efficient translation of tobacco mosaic virus RNA and rabbit globin 9S RNA in a cell-free system from commercial wheat germ. Proc Natl Acad Sci U S A. 1973 Aug;70(8):2330–2334. doi: 10.1073/pnas.70.8.2330. [DOI] [PMC free article] [PubMed] [Google Scholar]
  18. STUDIER F. W. SEDIMENTATION STUDIES OF THE SIZE AND SHAPE OF DNA. J Mol Biol. 1965 Feb;11:373–390. doi: 10.1016/s0022-2836(65)80064-x. [DOI] [PubMed] [Google Scholar]
  19. Sharp P. A., Sugden B., Sambrook J. Detection of two restriction endonuclease activities in Haemophilus parainfluenzae using analytical agarose--ethidium bromide electrophoresis. Biochemistry. 1973 Jul 31;12(16):3055–3063. doi: 10.1021/bi00740a018. [DOI] [PubMed] [Google Scholar]
  20. Spradling A., Pardue M. L., Penman S. Messenger RNA in heat-shocked Drosophila cells. J Mol Biol. 1977 Feb 5;109(4):559–587. doi: 10.1016/s0022-2836(77)80091-0. [DOI] [PubMed] [Google Scholar]
  21. Struhl K., Cameron J. R., Davis R. W. Functional genetic expression of eukaryotic DNA in Escherichia coli. Proc Natl Acad Sci U S A. 1976 May;73(5):1471–1475. doi: 10.1073/pnas.73.5.1471. [DOI] [PMC free article] [PubMed] [Google Scholar]
  22. Thomas M., White R. L., Davis R. W. Hybridization of RNA to double-stranded DNA: formation of R-loops. Proc Natl Acad Sci U S A. 1976 Jul;73(7):2294–2298. doi: 10.1073/pnas.73.7.2294. [DOI] [PMC free article] [PubMed] [Google Scholar]
  23. Wensink P. C., Finnegan D. J., Donelson J. E., Hogness D. S. A system for mapping DNA sequences in the chromosomes of Drosophila melanogaster. Cell. 1974 Dec;3(4):315–325. doi: 10.1016/0092-8674(74)90045-2. [DOI] [PubMed] [Google Scholar]
  24. White R. L., Hogness D. S. R loop mapping of the 18S and 28S sequences in the long and short repeating units of Drosophila melanogaster rDNA. Cell. 1977 Feb;10(2):177–192. doi: 10.1016/0092-8674(77)90213-6. [DOI] [PubMed] [Google Scholar]

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