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. 1984 Dec;4(12):2594–2609. doi: 10.1128/mcb.4.12.2594

Location of sequences in polyomavirus DNA that are required for early gene expression in vivo and in vitro.

C R Mueller, A M Mes-Masson, M Bouvier, J A Hassell
PMCID: PMC369264  PMID: 6098813

Abstract

To define the DNA sequences required for the expression of the polyomavirus early transcription unit, we cloned part of the viral genome in a plasmid vector, isolated mutants bearing lesions introduced in vitro within DNA sequences upstream of the transcriptional start site, and measured the capacity of these various mutant genomes to transform cells and to function as templates for transcription in vitro by comparison with wild-type DNA. One set of mutants bore 5' unidirectional deletions beginning at position -810 and extending downstream to position +4. Another set of mutants bore 3' undirectional deletions starting at position +4 and progressing upstream to position -311. The last set of mutants bore internal deletions between positions -810 and +4. Analyses of the properties of these mutant DNAs led us to conclude that the region between positions -403 and -311 includes an enhancer of gene expression. Deletion of this area from the viral genome reduced gene expression in vivo to 1 to 2% of wild-type levels, as measured by transformation assays. Moreover, this region increased the frequency of transformation of thymidine kinase-negative Rat-2 cells by the herpes simplex virus thymidine kinase (tk) gene from 5- to 20-fold. This occurred only if the polyomavirus sequences were covalently linked to the tk gene and then occurred independently of their orientation or position relative to the tk gene. A second transcriptional element is located downstream of the enhancer between positions -311 and -213. This element together with the enhancer was sufficient to bring about transformation of Rat-1 cells at nearly wild-type frequencies, and together these elements constitute the minimal sequences required for gene expression in vivo. The sequences making up the second element may be functionally duplicated downstream of position -165 (between positions -165 and -60). This was revealed by the characterization of mutant genomes with deletions between positions -349 and -60. The role of these redundant elements is not known; however, they may be analogous to the 21-base-pair repeats of simian virus 40. Finally, sequences between positions -57 and -1 were required for accurate and efficient transcription in vitro. However, this DNA stretch, which includes the TATA box and major transcriptional start sites, was not absolutely required for gene expression in vivo. We conclude that the polyomavirus promoter comprises multiple functional elements which are distributed across a DNA stretch of about 400 base pairs.

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Selected References

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  1. Adhya S., Gottesman M. Promoter occlusion: transcription through a promoter may inhibit its activity. Cell. 1982 Jul;29(3):939–944. doi: 10.1016/0092-8674(82)90456-1. [DOI] [PubMed] [Google Scholar]
  2. Banerji J., Olson L., Schaffner W. A lymphocyte-specific cellular enhancer is located downstream of the joining region in immunoglobulin heavy chain genes. Cell. 1983 Jul;33(3):729–740. doi: 10.1016/0092-8674(83)90015-6. [DOI] [PubMed] [Google Scholar]
  3. Banerji J., Rusconi S., Schaffner W. Expression of a beta-globin gene is enhanced by remote SV40 DNA sequences. Cell. 1981 Dec;27(2 Pt 1):299–308. doi: 10.1016/0092-8674(81)90413-x. [DOI] [PubMed] [Google Scholar]
  4. Benoist C., Chambon P. Deletions covering the putative promoter region of early mRNAs of simian virus 40 do not abolish T-antigen expression. Proc Natl Acad Sci U S A. 1980 Jul;77(7):3865–3869. doi: 10.1073/pnas.77.7.3865. [DOI] [PMC free article] [PubMed] [Google Scholar]
  5. Benoist C., Chambon P. In vivo sequence requirements of the SV40 early promotor region. Nature. 1981 Mar 26;290(5804):304–310. doi: 10.1038/290304a0. [DOI] [PubMed] [Google Scholar]
  6. Blair D. G., McClements W. L., Oskarsson M. K., Fischinger P. J., Vande Woude G. F. Biological activity of cloned Moloney sarcoma virus DNA: Terminally redundant sequences may enhance transformation efficiency. Proc Natl Acad Sci U S A. 1980 Jun;77(6):3504–3508. doi: 10.1073/pnas.77.6.3504. [DOI] [PMC free article] [PubMed] [Google Scholar]
  7. Breathnach R., Chambon P. Organization and expression of eucaryotic split genes coding for proteins. Annu Rev Biochem. 1981;50:349–383. doi: 10.1146/annurev.bi.50.070181.002025. [DOI] [PubMed] [Google Scholar]
  8. Busslinger M., Portmann R., Irminger J. C., Birnstiel M. L. Ubiquitous and gene-specific regulatory 5' sequences in a sea urchin histone DNA clone coding for histone protein variants. Nucleic Acids Res. 1980 Mar 11;8(5):957–977. doi: 10.1093/nar/8.5.957. [DOI] [PMC free article] [PubMed] [Google Scholar]
  9. Chang E. H., Ellis R. W., Scolnick E. M., Lowy D. R. Transformation by cloned Harvey murine sarcoma virus DNA: efficiency increased by long terminal repeat DNA. Science. 1980 Dec 12;210(4475):1249–1251. doi: 10.1126/science.6254153. [DOI] [PubMed] [Google Scholar]
  10. Cogen B. Virus-specific early RNA in 3T6 cells infected by a tsA mutant of polyoma virus. Virology. 1978 Mar;85(1):222–230. doi: 10.1016/0042-6822(78)90426-9. [DOI] [PubMed] [Google Scholar]
  11. Corden J., Wasylyk B., Buchwalder A., Sassone-Corsi P., Kedinger C., Chambon P. Promoter sequences of eukaryotic protein-coding genes. Science. 1980 Sep 19;209(4463):1406–1414. doi: 10.1126/science.6251548. [DOI] [PubMed] [Google Scholar]
  12. Cowie A., Tyndall C., Kamen R. Sequences at the capped 5'-ends of polyoma virus late region mRNAs: an example of extreme terminal heterogeneity. Nucleic Acids Res. 1981 Dec 11;9(23):6305–6322. doi: 10.1093/nar/9.23.6305. [DOI] [PMC free article] [PubMed] [Google Scholar]
  13. Cullen B. R., Lomedico P. T., Ju G. Transcriptional interference in avian retroviruses--implications for the promoter insertion model of leukaemogenesis. Nature. 1984 Jan 19;307(5948):241–245. doi: 10.1038/307241a0. [DOI] [PubMed] [Google Scholar]
  14. Dierks P., van Ooyen A., Cochran M. D., Dobkin C., Reiser J., Weissmann C. Three regions upstream from the cap site are required for efficient and accurate transcription of the rabbit beta-globin gene in mouse 3T6 cells. Cell. 1983 Mar;32(3):695–706. doi: 10.1016/0092-8674(83)90055-7. [DOI] [PubMed] [Google Scholar]
  15. Dierks P., van Ooyen A., Mantei N., Weissmann C. DNA sequences preceding the rabbit beta-globin gene are required for formation in mouse L cells of beta-globin RNA with the correct 5' terminus. Proc Natl Acad Sci U S A. 1981 Mar;78(3):1411–1415. doi: 10.1073/pnas.78.3.1411. [DOI] [PMC free article] [PubMed] [Google Scholar]
  16. Dynan W. S., Tjian R. Isolation of transcription factors that discriminate between different promoters recognized by RNA polymerase II. Cell. 1983 Mar;32(3):669–680. doi: 10.1016/0092-8674(83)90053-3. [DOI] [PubMed] [Google Scholar]
  17. Efstratiadis A., Posakony J. W., Maniatis T., Lawn R. M., O'Connell C., Spritz R. A., DeRiel J. K., Forget B. G., Weissman S. M., Slightom J. L. The structure and evolution of the human beta-globin gene family. Cell. 1980 Oct;21(3):653–668. doi: 10.1016/0092-8674(80)90429-8. [DOI] [PubMed] [Google Scholar]
  18. Enquist L. W., Vande Woude G. F., Wagner M., Smiley J. R., Summers W. C. Construction and characterization of a recombinant plasmid encoding the gene for the thymidine kinase of Herpes simplex type 1 virus. Gene. 1979 Nov;7(3-4):335–342. doi: 10.1016/0378-1119(79)90052-0. [DOI] [PubMed] [Google Scholar]
  19. Everett R. D., Baty D., Chambon P. The repeated GC-rich motifs upstream from the TATA box are important elements of the SV40 early promoter. Nucleic Acids Res. 1983 Apr 25;11(8):2447–2464. doi: 10.1093/nar/11.8.2447. [DOI] [PMC free article] [PubMed] [Google Scholar]
  20. Featherstone M. S., Naujokas M. A., Pomerantz B. J., Hassell J. A. A plasmid vehicle suitable for the molecular cloning and characterization of mammalian promoters. Nucleic Acids Res. 1984 Sep 25;12(18):7235–7249. doi: 10.1093/nar/12.18.7235. [DOI] [PMC free article] [PubMed] [Google Scholar]
  21. Fenton R. G., Basilico C. Changes in the topography of early region transcription during polyoma virus lytic infection. Proc Natl Acad Sci U S A. 1982 Dec;79(23):7142–7146. doi: 10.1073/pnas.79.23.7142. [DOI] [PMC free article] [PubMed] [Google Scholar]
  22. Fenton R. G., Basilico C. Viral gene expression in polyoma virus-transformed rat cells and their cured revertants. J Virol. 1981 Oct;40(1):150–163. doi: 10.1128/jvi.40.1.150-163.1981. [DOI] [PMC free article] [PubMed] [Google Scholar]
  23. Flavell A. J., Cowie A., Arrand J. R., Kamen R. Localization of three major cappe 5' ends of polyoma virus late mRNA's within a single tetranucleotide sequence in the viral genome. J Virol. 1980 Feb;33(2):902–908. doi: 10.1128/jvi.33.2.902-908.1980. [DOI] [PMC free article] [PubMed] [Google Scholar]
  24. Flavell A. J., Cowie A., Legon S., Kamen R. Multiple 5' terminal cap structures in late polyoma virus RNA. Cell. 1979 Feb;16(2):357–371. doi: 10.1016/0092-8674(79)90012-6. [DOI] [PubMed] [Google Scholar]
  25. Friedmann T., Esty A., LaPorte P., Deininger P. The nucleotide sequence and genome organization of the polyoma early region: extensive nucleotide and amino acid homology with SV40. Cell. 1979 Jul;17(3):715–724. doi: 10.1016/0092-8674(79)90278-2. [DOI] [PubMed] [Google Scholar]
  26. Fromm M., Berg P. Deletion mapping of DNA regions required for SV40 early region promoter function in vivo. J Mol Appl Genet. 1982;1(5):457–481. [PubMed] [Google Scholar]
  27. Fujimura F. K., Deininger P. L., Friedmann T., Linney E. Mutation near the polyoma DNA replication origin permits productive infection of F9 embryonal carcinoma cells. Cell. 1981 Mar;23(3):809–814. doi: 10.1016/0092-8674(81)90445-1. [DOI] [PubMed] [Google Scholar]
  28. Gaudray P., Tyndall C., Kamen R., Cuzin F. The high affinity binding site on polyoma virus DNA for the viral large-T protein. Nucleic Acids Res. 1981 Nov 11;9(21):5697–5710. doi: 10.1093/nar/9.21.5697. [DOI] [PMC free article] [PubMed] [Google Scholar]
  29. Ghosh P. K., Lebowitz P., Frisque R. J., Gluzman Y. Identification of a promoter component involved in positioning the 5' termini of simian virus 40 early mRNAs. Proc Natl Acad Sci U S A. 1981 Jan;78(1):100–104. doi: 10.1073/pnas.78.1.100. [DOI] [PMC free article] [PubMed] [Google Scholar]
  30. Gillies S. D., Morrison S. L., Oi V. T., Tonegawa S. A tissue-specific transcription enhancer element is located in the major intron of a rearranged immunoglobulin heavy chain gene. Cell. 1983 Jul;33(3):717–728. doi: 10.1016/0092-8674(83)90014-4. [DOI] [PubMed] [Google Scholar]
  31. Graham F. L., van der Eb A. J. A new technique for the assay of infectivity of human adenovirus 5 DNA. Virology. 1973 Apr;52(2):456–467. doi: 10.1016/0042-6822(73)90341-3. [DOI] [PubMed] [Google Scholar]
  32. Grosschedl R., Birnstiel M. L. Identification of regulatory sequences in the prelude sequences of an H2A histone gene by the study of specific deletion mutants in vivo. Proc Natl Acad Sci U S A. 1980 Mar;77(3):1432–1436. doi: 10.1073/pnas.77.3.1432. [DOI] [PMC free article] [PubMed] [Google Scholar]
  33. Grosschedl R., Birnstiel M. L. Spacer DNA sequences upstream of the T-A-T-A-A-A-T-A sequence are essential for promotion of H2A histone gene transcription in vivo. Proc Natl Acad Sci U S A. 1980 Dec;77(12):7102–7106. doi: 10.1073/pnas.77.12.7102. [DOI] [PMC free article] [PubMed] [Google Scholar]
  34. Grosveld G. C., de Boer E., Shewmaker C. K., Flavell R. A. DNA sequences necessary for transcription of the rabbit beta-globin gene in vivo. Nature. 1982 Jan 14;295(5845):120–126. doi: 10.1038/295120a0. [DOI] [PubMed] [Google Scholar]
  35. Gruss P., Dhar R., Khoury G. Simian virus 40 tandem repeated sequences as an element of the early promoter. Proc Natl Acad Sci U S A. 1981 Feb;78(2):943–947. doi: 10.1073/pnas.78.2.943. [DOI] [PMC free article] [PubMed] [Google Scholar]
  36. Hansen U., Tenen D. G., Livingston D. M., Sharp P. A. T antigen repression of SV40 early transcription from two promoters. Cell. 1981 Dec;27(3 Pt 2):603–613. doi: 10.1016/0092-8674(81)90402-5. [DOI] [PubMed] [Google Scholar]
  37. Hassell J. A., Topp W. C., Rifkin D. B., Moreau P. E. Transformation of rat embryo fibroblasts by cloned polyoma virus DNA fragments containing only part of the early region. Proc Natl Acad Sci U S A. 1980 Jul;77(7):3978–3982. doi: 10.1073/pnas.77.7.3978. [DOI] [PMC free article] [PubMed] [Google Scholar]
  38. Hearing P., Shenk T. The adenovirus type 5 E1A transcriptional control region contains a duplicated enhancer element. Cell. 1983 Jul;33(3):695–703. doi: 10.1016/0092-8674(83)90012-0. [DOI] [PubMed] [Google Scholar]
  39. Hen R., Borrelli E., Sassone-Corsi P., Chambon P. An enhancer element is located 340 base pairs upstream from the adenovirus-2 E1A capsite. Nucleic Acids Res. 1983 Dec 20;11(24):8747–8760. doi: 10.1093/nar/11.24.8747. [DOI] [PMC free article] [PubMed] [Google Scholar]
  40. Herbomel P., Saragosti S., Blangy D., Yaniv M. Fine structure of the origin-proximal DNAase I-hypersensitive region in wild-type and EC mutant polyoma. Cell. 1981 Sep;25(3):651–658. doi: 10.1016/0092-8674(81)90172-0. [DOI] [PubMed] [Google Scholar]
  41. Hirose S., Takeuchi K., Hori H., Hirose T., Inayama S., Suzuki Y. Contact points between transcription machinery and the fibroin gene promoter deduced by functional tests of single-base substitution mutants. Proc Natl Acad Sci U S A. 1984 Mar;81(5):1394–1397. doi: 10.1073/pnas.81.5.1394. [DOI] [PMC free article] [PubMed] [Google Scholar]
  42. Hu S. L., Manley J. L. DNA sequence required for initiation of transcription in vitro from the major late promoter of adenovirus 2. Proc Natl Acad Sci U S A. 1981 Feb;78(2):820–824. doi: 10.1073/pnas.78.2.820. [DOI] [PMC free article] [PubMed] [Google Scholar]
  43. Jat P., Novak U., Cowie A., Tyndall C., Kamen R. DNA sequences required for specific and efficient initiation of transcription at the polyoma virus early promoter. Mol Cell Biol. 1982 Jul;2(7):737–751. doi: 10.1128/mcb.2.7.737. [DOI] [PMC free article] [PubMed] [Google Scholar]
  44. Jat P., Roberts J. W., Cowie A., Kamen R. Comparison of the polyoma virus early and late promoters by transcription in vitro. Nucleic Acids Res. 1982 Feb 11;10(3):871–887. doi: 10.1093/nar/10.3.871. [DOI] [PMC free article] [PubMed] [Google Scholar]
  45. Joyner A., Yamamoto Y., Bernstein A. Retrovirus long terminal repeats activate expression of coding sequences for the herpes simplex virus thymidine kinase gene. Proc Natl Acad Sci U S A. 1982 Mar;79(5):1573–1577. doi: 10.1073/pnas.79.5.1573. [DOI] [PMC free article] [PubMed] [Google Scholar]
  46. Kamen R., Jat P., Treisman R., Favaloro J., Folk W. R. 5' termini of polyoma virus early region transcripts synthesized in vivo by wild-type virus and viable deletion mutants. J Mol Biol. 1982 Aug 5;159(2):189–224. doi: 10.1016/0022-2836(82)90493-4. [DOI] [PubMed] [Google Scholar]
  47. Katinka M., Yaniv M., Vasseur M., Blangy D. Expression of polyoma early functions in mouse embryonal carcinoma cells depends on sequence rearrangements in the beginning of the late region. Cell. 1980 Jun;20(2):393–399. doi: 10.1016/0092-8674(80)90625-x. [DOI] [PubMed] [Google Scholar]
  48. Laimins L. A., Khoury G., Gorman C., Howard B., Gruss P. Host-specific activation of transcription by tandem repeats from simian virus 40 and Moloney murine sarcoma virus. Proc Natl Acad Sci U S A. 1982 Nov;79(21):6453–6457. doi: 10.1073/pnas.79.21.6453. [DOI] [PMC free article] [PubMed] [Google Scholar]
  49. Lee D. C., Roeder R. G., Wold W. S. DNA sequences affecting specific initiation of transcription in vitro from the EIII promoter of adenovirus 2. Proc Natl Acad Sci U S A. 1982 Jan;79(1):41–45. doi: 10.1073/pnas.79.1.41. [DOI] [PMC free article] [PubMed] [Google Scholar]
  50. Levinson B., Khoury G., Vande Woude G., Gruss P. Activation of SV40 genome by 72-base pair tandem repeats of Moloney sarcoma virus. Nature. 1982 Feb 18;295(5850):568–572. doi: 10.1038/295568a0. [DOI] [PubMed] [Google Scholar]
  51. Linney E., Donerly S. DNA fragments from F9 PyEC mutants increase expression of heterologous genes in transfected F9 cells. Cell. 1983 Dec;35(3 Pt 2):693–699. doi: 10.1016/0092-8674(83)90102-2. [DOI] [PubMed] [Google Scholar]
  52. Luciw P. A., Bishop J. M., Varmus H. E., Capecchi M. R. Location and function of retroviral and SV40 sequences that enhance biochemical transformation after microinjection of DNA. Cell. 1983 Jul;33(3):705–716. doi: 10.1016/0092-8674(83)90013-2. [DOI] [PubMed] [Google Scholar]
  53. Lusky M., Berg L., Weiher H., Botchan M. Bovine papilloma virus contains an activator of gene expression at the distal end of the early transcription unit. Mol Cell Biol. 1983 Jun;3(6):1108–1122. doi: 10.1128/mcb.3.6.1108. [DOI] [PMC free article] [PubMed] [Google Scholar]
  54. Lusky M., Botchan M. Inhibition of SV40 replication in simian cells by specific pBR322 DNA sequences. Nature. 1981 Sep 3;293(5827):79–81. doi: 10.1038/293079a0. [DOI] [PubMed] [Google Scholar]
  55. Luthman H., Nilsson M. G., Magnusson G. Non-contiguous segments of the polyoma genome required in cis for DNA replication. J Mol Biol. 1982 Nov 15;161(4):533–550. doi: 10.1016/0022-2836(82)90406-5. [DOI] [PubMed] [Google Scholar]
  56. Manley J. L., Fire A., Cano A., Sharp P. A., Gefter M. L. DNA-dependent transcription of adenovirus genes in a soluble whole-cell extract. Proc Natl Acad Sci U S A. 1980 Jul;77(7):3855–3859. doi: 10.1073/pnas.77.7.3855. [DOI] [PMC free article] [PubMed] [Google Scholar]
  57. Mathis D. J., Chambon P. The SV40 early region TATA box is required for accurate in vitro initiation of transcription. Nature. 1981 Mar 26;290(5804):310–315. doi: 10.1038/290310a0. [DOI] [PubMed] [Google Scholar]
  58. Maxam A. M., Gilbert W. Sequencing end-labeled DNA with base-specific chemical cleavages. Methods Enzymol. 1980;65(1):499–560. doi: 10.1016/s0076-6879(80)65059-9. [DOI] [PubMed] [Google Scholar]
  59. McKnight S. L., Gavis E. R., Kingsbury R., Axel R. Analysis of transcriptional regulatory signals of the HSV thymidine kinase gene: identification of an upstream control region. Cell. 1981 Aug;25(2):385–398. doi: 10.1016/0092-8674(81)90057-x. [DOI] [PubMed] [Google Scholar]
  60. McKnight S. L., Kingsbury R. Transcriptional control signals of a eukaryotic protein-coding gene. Science. 1982 Jul 23;217(4557):316–324. doi: 10.1126/science.6283634. [DOI] [PubMed] [Google Scholar]
  61. Mellon P., Parker V., Gluzman Y., Maniatis T. Identification of DNA sequences required for transcription of the human alpha 1-globin gene in a new SV40 host-vector system. Cell. 1981 Dec;27(2 Pt 1):279–288. doi: 10.1016/0092-8674(81)90411-6. [DOI] [PubMed] [Google Scholar]
  62. Mes A. M., Hassell J. A. Polyoma viral middle T-antigen is required for transformation. J Virol. 1982 May;42(2):621–629. doi: 10.1128/jvi.42.2.621-629.1982. [DOI] [PMC free article] [PubMed] [Google Scholar]
  63. Mills F. C., Fisher L. M., Kuroda R., Ford A. M., Gould H. J. DNase I hypersensitive sites in the chromatin of human mu immunoglobulin heavy-chain genes. Nature. 1983 Dec 22;306(5945):809–812. doi: 10.1038/306809a0. [DOI] [PubMed] [Google Scholar]
  64. Moreau P., Hen R., Wasylyk B., Everett R., Gaub M. P., Chambon P. The SV40 72 base repair repeat has a striking effect on gene expression both in SV40 and other chimeric recombinants. Nucleic Acids Res. 1981 Nov 25;9(22):6047–6068. doi: 10.1093/nar/9.22.6047. [DOI] [PMC free article] [PubMed] [Google Scholar]
  65. Muller W. J., Mueller C. R., Mes A. M., Hassell J. A. Polyomavirus origin for DNA replication comprises multiple genetic elements. J Virol. 1983 Sep;47(3):586–599. doi: 10.1128/jvi.47.3.586-599.1983. [DOI] [PMC free article] [PubMed] [Google Scholar]
  66. Muller W. J., Naujokas M. A., Hassell J. A. Polyomavirus-plasmid recombinants capable of replicating have an enhanced transforming potential. Mol Cell Biol. 1983 Sep;3(9):1670–1674. doi: 10.1128/mcb.3.9.1670. [DOI] [PMC free article] [PubMed] [Google Scholar]
  67. Nordheim A., Lafer E. M., Peck L. J., Wang J. C., Stollar B. D., Rich A. Negatively supercoiled plasmids contain left-handed Z-DNA segments as detected by specific antibody binding. Cell. 1982 Dec;31(2 Pt 1):309–318. doi: 10.1016/0092-8674(82)90124-6. [DOI] [PubMed] [Google Scholar]
  68. Nordheim A., Rich A. Negatively supercoiled simian virus 40 DNA contains Z-DNA segments within transcriptional enhancer sequences. Nature. 1983 Jun 23;303(5919):674–679. doi: 10.1038/303674a0. [DOI] [PubMed] [Google Scholar]
  69. Picard D., Schaffner W. A lymphocyte-specific enhancer in the mouse immunoglobulin kappa gene. Nature. 1984 Jan 5;307(5946):80–82. doi: 10.1038/307080a0. [DOI] [PubMed] [Google Scholar]
  70. Pomerantz B. J., Hassell J. A. Polyomavirus and simian virus 40 large T antigens bind to common DNA sequences. J Virol. 1984 Mar;49(3):925–937. doi: 10.1128/jvi.49.3.925-937.1984. [DOI] [PMC free article] [PubMed] [Google Scholar]
  71. Pomerantz B. J., Mueller C. R., Hassell J. A. Polyomavirus large T antigen binds independently to multiple, unique regions on the viral genome. J Virol. 1983 Sep;47(3):600–610. doi: 10.1128/jvi.47.3.600-610.1983. [DOI] [PMC free article] [PubMed] [Google Scholar]
  72. Queen C., Baltimore D. Immunoglobulin gene transcription is activated by downstream sequence elements. Cell. 1983 Jul;33(3):741–748. doi: 10.1016/0092-8674(83)90016-8. [DOI] [PubMed] [Google Scholar]
  73. Rio D., Robbins A., Myers R., Tjian R. Regulation of simian virus 40 early transcription in vitro by a purified tumor antigen. Proc Natl Acad Sci U S A. 1980 Oct;77(10):5706–5710. doi: 10.1073/pnas.77.10.5706. [DOI] [PMC free article] [PubMed] [Google Scholar]
  74. Rogers D. T., Lemire J. M., Bostian K. A. Acid phosphatase polypeptides in Saccharomyces cerevisiae are encoded by a differentially regulated multigene family. Proc Natl Acad Sci U S A. 1982 Apr;79(7):2157–2161. doi: 10.1073/pnas.79.7.2157. [DOI] [PMC free article] [PubMed] [Google Scholar]
  75. Rothwell V. M., Folk W. R. Comparison of the DNA sequence of the Crawford small-plaque variant of polyomavirus with those of polyomaviruses A2 and strain 3. J Virol. 1983 Nov;48(2):472–480. doi: 10.1128/jvi.48.2.472-480.1983. [DOI] [PMC free article] [PubMed] [Google Scholar]
  76. Ruley H. E., Fried M. Sequence repeats in a polyoma virus DNA region important for gene expression. J Virol. 1983 Jul;47(1):233–237. doi: 10.1128/jvi.47.1.233-237.1983. [DOI] [PMC free article] [PubMed] [Google Scholar]
  77. Scott W. A., Wigmore D. J. Sites in simian virus 40 chromatin which are preferentially cleaved by endonucleases. Cell. 1978 Dec;15(4):1511–1518. doi: 10.1016/0092-8674(78)90073-9. [DOI] [PubMed] [Google Scholar]
  78. Sekikawa K., Levine A. J. Isolation and characterization of polyoma host range mutants that replicate in nullipotential embryonal carcinoma cells. Proc Natl Acad Sci U S A. 1981 Feb;78(2):1100–1104. doi: 10.1073/pnas.78.2.1100. [DOI] [PMC free article] [PubMed] [Google Scholar]
  79. Shenk T. Transcriptional control regions: nucleotide sequence requirements for initiation by RNA polymerase II and III. Curr Top Microbiol Immunol. 1981;93:25–46. doi: 10.1007/978-3-642-68123-3_3. [DOI] [PubMed] [Google Scholar]
  80. Soeda E., Arrand J. R., Smolar N., Walsh J. E., Griffin B. E. Coding potential and regulatory signals of the polyoma virus genome. Nature. 1980 Jan 31;283(5746):445–453. doi: 10.1038/283445a0. [DOI] [PubMed] [Google Scholar]
  81. Treisman R. Characterisation of polyoma late mRNA leader sequences by molecular cloning and DNA sequence analysis. Nucleic Acids Res. 1980 Nov 11;8(21):4867–4888. doi: 10.1093/nar/8.21.4867. [DOI] [PMC free article] [PubMed] [Google Scholar]
  82. Treisman R., Cowie A., Favaloro J., Jat P., Kamen R. The structures of the spliced mRNAs encoding polyoma virus early region proteins. J Mol Appl Genet. 1981;1(2):83–92. [PubMed] [Google Scholar]
  83. Tyndall C., La Mantia G., Thacker C. M., Favaloro J., Kamen R. A region of the polyoma virus genome between the replication origin and late protein coding sequences is required in cis for both early gene expression and viral DNA replication. Nucleic Acids Res. 1981 Dec 11;9(23):6231–6250. doi: 10.1093/nar/9.23.6231. [DOI] [PMC free article] [PubMed] [Google Scholar]
  84. Wang A. H., Quigley G. J., Kolpak F. J., Crawford J. L., van Boom J. H., van der Marel G., Rich A. Molecular structure of a left-handed double helical DNA fragment at atomic resolution. Nature. 1979 Dec 13;282(5740):680–686. doi: 10.1038/282680a0. [DOI] [PubMed] [Google Scholar]
  85. Wasylyk B., Derbyshire R., Guy A., Molko D., Roget A., Téoule R., Chambon P. Specific in vitro transcription of conalbumin gene is drastically decreased by single-point mutation in T-A-T-A box homology sequence. Proc Natl Acad Sci U S A. 1980 Dec;77(12):7024–7028. doi: 10.1073/pnas.77.12.7024. [DOI] [PMC free article] [PubMed] [Google Scholar]
  86. Wasylyk B., Wasylyk C., Augereau P., Chambon P. The SV40 72 bp repeat preferentially potentiates transcription starting from proximal natural or substitute promoter elements. Cell. 1983 Feb;32(2):503–514. doi: 10.1016/0092-8674(83)90470-1. [DOI] [PubMed] [Google Scholar]
  87. Weiher H., Botchan M. R. An enhancer sequence from bovine papilloma virus DNA consists of two essential regions. Nucleic Acids Res. 1984 Mar 26;12(6):2901–2916. doi: 10.1093/nar/12.6.2901. [DOI] [PMC free article] [PubMed] [Google Scholar]
  88. Weiher H., König M., Gruss P. Multiple point mutations affecting the simian virus 40 enhancer. Science. 1983 Feb 11;219(4585):626–631. doi: 10.1126/science.6297005. [DOI] [PubMed] [Google Scholar]
  89. Wigler M., Pellicer A., Silverstein S., Axel R. Biochemical transfer of single-copy eucaryotic genes using total cellular DNA as donor. Cell. 1978 Jul;14(3):725–731. doi: 10.1016/0092-8674(78)90254-4. [DOI] [PubMed] [Google Scholar]
  90. de Villiers J., Olson L., Tyndall C., Schaffner W. Transcriptional 'enhancers' from SV40 and polyoma virus show a cell type preference. Nucleic Acids Res. 1982 Dec 20;10(24):7965–7976. doi: 10.1093/nar/10.24.7965. [DOI] [PMC free article] [PubMed] [Google Scholar]
  91. de Villiers J., Schaffner W. A small segment of polyoma virus DNA enhances the expression of a cloned beta-globin gene over a distance of 1400 base pairs. Nucleic Acids Res. 1981 Dec 11;9(23):6251–6264. doi: 10.1093/nar/9.23.6251. [DOI] [PMC free article] [PubMed] [Google Scholar]

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