Results 211 to 220 of about 541,018 (257)
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Proceedings of the Royal Society of London. Series B. Biological Sciences, 1971
Over the past decade our laboratory has worked intensively on the molecular details of RNA replication using the RNA bacteriophages as a model system. About a year and a half ago, I decided that the time had arrived for us to turn our accumulated technical armament on RNA replication to a problem of more immediate relevance and chose the RNA oncogenic ...
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Over the past decade our laboratory has worked intensively on the molecular details of RNA replication using the RNA bacteriophages as a model system. About a year and a half ago, I decided that the time had arrived for us to turn our accumulated technical armament on RNA replication to a problem of more immediate relevance and chose the RNA oncogenic ...
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Epistasis in RNA Viruses [PDF]
Science, 2004 An important question yet to be answered in evolutionary biology concerns the benefit of recombination and sexual reproduction. Some theories suggest that recombination has been favored by selection because of the nature of epistatic interactions, where a gene at one locus influences the expression of a gene at a different locus. In their Perspective, [
Yannis Michalakis, Denis Roze
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Annals of the New York Academy of Sciences, 1980
These arguments lead to the suggestion that four independent evolutionary lines exist within the general group of RNA viruses. These are positive strand viruses, negative strand viruses, double stranded viruses, and retroviruses. Three of the viral systems may well have shared genes but the double-stranded RNA viruses appear to represent a very ...
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These arguments lead to the suggestion that four independent evolutionary lines exist within the general group of RNA viruses. These are positive strand viruses, negative strand viruses, double stranded viruses, and retroviruses. Three of the viral systems may well have shared genes but the double-stranded RNA viruses appear to represent a very ...
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BioEssays, 1987
AbstractThe structures of spherical RNA plant tiruses, containing 180 copies of one protein subunit, are closely related to those of the animal RNA picornaviruses, which are built of 60 copies of each of three larger capsid proteins. Other spherical RNA and DNA viruses utilize the same structural motif as building units of the viral capsid.
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AbstractThe structures of spherical RNA plant tiruses, containing 180 copies of one protein subunit, are closely related to those of the animal RNA picornaviruses, which are built of 60 copies of each of three larger capsid proteins. Other spherical RNA and DNA viruses utilize the same structural motif as building units of the viral capsid.
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Transfer RNA in RNA Tumor Viruses
1977Publisher Summary This chapter reviews that the presence of the majority of the tRNAs inside an RNA tumor virus remains an enigma. The finding that specific tRNA molecules can serve as primers for DNA synthesis is of fundamental importance in the field of molecular biology.
Beth C. Mullin, Larry C. Waters
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Evolution of sex in RNA viruses
Trends in Ecology & Evolution, 1988The distribution of deleterious mutations in a population of organisms is determined by the opposing effects of two forces, mutation pressure and selection. If mutation rates are high, the resulting mutation-selection balance can generate a substantial mutational load in the population.
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ON THE ORIGIN OF RNA TUMOR VIRUSES
Annual Review of Genetics, 1974RNA tumor viruses are enveloped animal viruses whose virions contain an RNA genome and a DNA polymerase. RNA tumor viruses have been isolated from reptiles, birds, and many orders of mammals, including primates. However, none has been isolated from man.
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Photobiology of RNA Viruses [PDF]
, 1981 Studies on the photochemistry and photobiology of viruses have paralleled studies on their structure, replication, and genetic organization. Nonionizing radiation, because of its relative specificity of action, has served as a dissecting tool in many types of investigations.
Terence M. Murphy, Milton P. Gordon
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Are RNA Viruses Vestiges of an RNA World?
Journal for General Philosophy of Science, 2010This paper follows the circuitous path of theories concerning the origins of viruses from the early years of the twentieth century until the present, considering RNA viruses in particular. I focus on three periods during which new understandings of the nature of viruses guided the construction and reconstruction of origin hypotheses.
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Trends in Biochemical Sciences, 1977
21 Robb, J.A. (1974) Cold Spring Harbor Symp. Quant. Biol. 39,277 Noonan, C., Brugge, J. and Butel, J. (1976) J. Viral. 18, 1106 Smith, H., Sher, C. and Todaro, G. (1971) There is firm genetic evidence that sarcoma viruses carry an“oncogene’, that is, a specific gene for neoplastic transformation, which we may call src, for sarcoma function.
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21 Robb, J.A. (1974) Cold Spring Harbor Symp. Quant. Biol. 39,277 Noonan, C., Brugge, J. and Butel, J. (1976) J. Viral. 18, 1106 Smith, H., Sher, C. and Todaro, G. (1971) There is firm genetic evidence that sarcoma viruses carry an“oncogene’, that is, a specific gene for neoplastic transformation, which we may call src, for sarcoma function.
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