Abstract
Separated strands of adenovirus DNA were annealed with early cytoplasmic RNA and visualized in the electron microscope. DNA-RNA duplex regions within the DNA filaments could be recognized by their heavy contour. This contour was often interrupted at distinct locations by loops of displaced, single-stranded DNA. Loops have been observed and mapped in all four early regions of the genome. The structures appear to signal hitherto unknown mechanisms of eukaryotic gene expression.
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- Bachenheimer S., Darnell J. E. Adenovirus-2 mRNA is transcribed as part of a high-molecular-weight precursor RNA. Proc Natl Acad Sci U S A. 1975 Nov;72(11):4445–4449. doi: 10.1073/pnas.72.11.4445. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 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]
- Chow L. T., Roberts J. M., Lewis J. B., Broker T. R. A map of cytoplasmic RNA transcripts from lytic adenovirus type 2, determined by electron microscopy of RNA:DNA hybrids. Cell. 1977 Aug;11(4):819–836. doi: 10.1016/0092-8674(77)90294-x. [DOI] [PubMed] [Google Scholar]
- Craig E. A., Sayavedra M., Raskas H. J. Strand assignment of polyadenylated nuclear RNAs synthesized early in infection with adenovirus 2. Virology. 1977 Apr;77(2):545–555. doi: 10.1016/0042-6822(77)90480-9. [DOI] [PubMed] [Google Scholar]
- Daniell E. Genome structure of incomplete particles of adenovirus. J Virol. 1976 Aug;19(2):685–708. doi: 10.1128/jvi.19.2.685-708.1976. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Eron L., Callahan R., Westphal H. Cell-free synthesis of adenovirus coat proteins. J Biol Chem. 1974 Oct 10;249(19):6331–6338. [PubMed] [Google Scholar]
- Garon C. F., Berry K. W., Rose J. A. A unique form of terminal redundancy in adenovirus DNA molecules. Proc Natl Acad Sci U S A. 1972 Sep;69(9):2391–2395. doi: 10.1073/pnas.69.9.2391. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Goldberg S., Weber J., Darnell J. E., Jr The definition of a large viral transcription unit late in Ad2 infection of HeLa cells: mapping by effects of ultraviolet irradiation. Cell. 1977 Apr;10(4):617–621. doi: 10.1016/0092-8674(77)90094-0. [DOI] [PubMed] [Google Scholar]
- Green M., Piña M., Kimes R., Wensink P. C., MacHattie L. A., Thomas C. A., Jr Adenovirus DNA. I. Molecular weight and conformation. Proc Natl Acad Sci U S A. 1967 May;57(5):1302–1309. doi: 10.1073/pnas.57.5.1302. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Hashimoto S. I., Green M. Multiple methylated cap sequences in adenovirus type 2 early mRNA. J Virol. 1976 Nov;20(2):425–435. doi: 10.1128/jvi.20.2.425-435.1976. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Klessig D. F. Two adenovirus mRNAs have a common 5' terminal leader sequence encoded at least 10 kb upstream from their main coding regions. Cell. 1977 Sep;12(1):9–21. doi: 10.1016/0092-8674(77)90181-7. [DOI] [PubMed] [Google Scholar]
- Lewin B. Units of transcription and translation: sequence components of heterogeneous nuclear RNA and messenger RNA. Cell. 1975 Feb;4(2):77–93. doi: 10.1016/0092-8674(75)90113-0. [DOI] [PubMed] [Google Scholar]
- Lewin B. Units of transcription and translation: the relationship between heterogeneous nuclear RNA and messenger RNA. Cell. 1975 Jan;4(1):11–20. doi: 10.1016/0092-8674(75)90128-2. [DOI] [PubMed] [Google Scholar]
- Lewis J. B., Atkins J. F., Anderson C. W., Baum P. R., Gesteland R. F. Mapping of late adenovirus genes by cell-free translation of RNA selected by hybridization to specific DNA fragments. Proc Natl Acad Sci U S A. 1975 Apr;72(4):1344–1348. doi: 10.1073/pnas.72.4.1344. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Lewis J. B., Atkins J. F., Baum P. R., Solem R., Gesteland R. F., Anderson C. W. Location and identification of the genes for adenovirus type 2 early polypeptides. Cell. 1976 Jan;7(1):141–151. doi: 10.1016/0092-8674(76)90264-6. [DOI] [PubMed] [Google Scholar]
- McGuire P. M., Swart C., Hodge L. D. Adenovirus messenger RNA in mammalian cells: failure of polyribosome association in the absence of nuclear cleavage. Proc Natl Acad Sci U S A. 1972 Jun;69(6):1578–1582. doi: 10.1073/pnas.69.6.1578. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Meissner H. C., Meyer J., Maizel J. V., Jr, Westphal H. Visualization and mapping of late nuclear adenovirus RNA. Cell. 1977 Feb;10(2):225–235. doi: 10.1016/0092-8674(77)90216-1. [DOI] [PubMed] [Google Scholar]
- Meyer J., Neuwald P. D., Lai S. P., Maizel J. V., Jr, Westphal H. Electron microscopy of late adenovirus type 2 mRNA hybridized to double-stranded viral DNA. J Virol. 1977 Mar;21(3):1010–1018. doi: 10.1128/jvi.21.3.1010-1018.1977. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Neuwald P. D., Meyer J., Maizel J. V., Jr, Westpahl H. Early gene expression of adenovirus type 2: R-loop mapping of mRNA and time course of viral DNA, mRNA, and protein synthesis. J Virol. 1977 Mar;21(3):1019–1030. doi: 10.1128/jvi.21.3.1019-1030.1977. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Pettersson U., Tibbetts C., Philipson L. Hybridization maps of early and late messenger RNA sequences on the adenovirus type 2 genome. J Mol Biol. 1976 Mar 15;101(4):479–501. doi: 10.1016/0022-2836(76)90241-2. [DOI] [PubMed] [Google Scholar]
- Sharp P. A., Gallimore P. H., Flint S. J. Mapping of adenovirus 2 RNA sequences in lytically infected cells and transformed cell lines. Cold Spring Harb Symp Quant Biol. 1975;39(Pt 1):457–474. doi: 10.1101/sqb.1974.039.01.058. [DOI] [PubMed] [Google Scholar]
- 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]
- Wall R., Philipson L., Darnell J. E. Processing of adenovirus specific nuclear RNA during virus replication. Virology. 1972 Oct;50(1):27–34. doi: 10.1016/0042-6822(72)90342-x. [DOI] [PubMed] [Google Scholar]
- Weber J., Jelinek W., Darnell J. E., Jr The definition of a large viral transcription unit late in Ad2 infection of HeLa cells: mapping of nascent RNA molecules labeled in isolated nuclei. Cell. 1977 Apr;10(4):611–616. doi: 10.1016/0092-8674(77)90093-9. [DOI] [PubMed] [Google Scholar]
- Wellauer P. K., Dawid I. B. The structural organization of ribosomal DNA in Drosophila melanogaster. Cell. 1977 Feb;10(2):193–212. doi: 10.1016/0092-8674(77)90214-8. [DOI] [PubMed] [Google Scholar]
- Westphal H., Meyer J., Maizel J. V., Jr Mapping of adenovirus messenger RNA by electron microscopy. Proc Natl Acad Sci U S A. 1976 Jun;73(6):2069–2071. doi: 10.1073/pnas.73.6.2069. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 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]
- Wolfson J., Dressler D. Adenovirus-2 DNA contains an inverted terminal repetition. Proc Natl Acad Sci U S A. 1972 Oct;69(10):3054–3057. doi: 10.1073/pnas.69.10.3054. [DOI] [PMC free article] [PubMed] [Google Scholar]