Results 41 to 50 of about 528 (131)
Viruses, virophages, and their living nature
Acta Virologica, 2010 Over 100 years viruses have fascinated scientists around the world. Although biologists, chemists, physicians, veterinarians, and even physicists attempted to elucidate the nature of viruses, the question still remains "Are viruses alive?" Different theories have aimed at unifying our views of virology to provide an answer.
Ruiz Saenz, Julian, Rodas JD
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A classification system for virophages and satellite viruses [PDF]
Archives of Virology, 2015 Satellite viruses encode structural proteins required for the formation of infectious particles but depend on helper viruses for completing their replication cycles. Because of this unique property, satellite viruses that infect plants, arthropods, or mammals, as well as the more recently discovered satellite-like viruses that infect protists ...
Krupovic, Mart +2 more
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Вопросы вирусологии, 2018 The brief review is devoted to description of the discovery of giant viruses belonging to the families of Mimiviridae and Marseilleviridae, as well as unassigned genera Pithoviruses, Pandoravirus, and Molliviruses.
D. K. Lvov +3 more
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Evolution of exploitation and replication of giant viruses and virophages. [PDF]
Virus EvolAbstract Tripartite biotic interactions are inherently complex, and the strong interdependence of species and often one-sided exploitation can make these systems vulnerable to extinction. The persistence of species depends then on the balance between exploitation and avoidance of exploitation beyond the point where sustainable resource ...
Del Arco A, Fischer MG, Becks L.
europepmc +4 more sources
Amoebae as Battlefields for Bacteria, Giant Viruses, and Virophages [PDF]
Journal of Virology, 2013 ABSTRACT When amoebae are simultaneously infected with Acanthamoeba polyphaga Mimivirus (APM) and the strictly intracellular BABL1 bacterium, the latter is always lost after serial subculturing. We showed that the virophage Sputnik 1, by reducing APM fitness, preserved BABL1 growth in acute and chronic ...
Meriem, Slimani +3 more
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Metagenomic Analysis of Virus Diversity and Relative Abundance in a Eutrophic Freshwater Harbour
Viruses, 2019 Aquatic viruses have been extensively studied over the past decade, yet fundamental aspects of freshwater virus communities remain poorly described. Our goal was to characterize virus communities captured in the >0.22 µm size-fraction seasonally ...
Christine N. Palermo +3 more
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A systematic approach to cancer: evolution beyond selection
Clinical and Translational Medicine, Volume 6, Issue 1, December 2017., 2017 AbstractCancer is typically scrutinized as a pathological process characterized by chromosomal aberrations and clonal expansion subject to stochastic Darwinian selection within adaptive cellular ecosystems. Cognition based evolution is suggested as an alternative approach to cancer development and progression in which neoplastic cells of differing ...
William B. Miller Jr., John S. Torday
wiley +1 more source
Characteristics of virophages and giant viruses
Acta Biochimica Polonica, 2018 Five years after being discovered in 2003, some giant viruses were demonstrated to play a role of the hosts for virophages, their parasites, setting out a novel and yet unknown regulatory mechanism of the giant viruses presence in an aqueous. So far, 20 virophages have been registered and 13 of them have been described as a metagenomic material, which ...
Wiesław Deptuła +3 more
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Structure of Sputnik, a virophage, at 3.5-Å resolution [PDF]
Proceedings of the National Academy of Sciences, 2012 “Sputnik” is a dsDNA virus, referred to as a virophage, that is coassembled with Mimivirus in the host amoeba. We have used cryo-EM to produce an electron density map of the icosahedral Sputnik virus at 3.5-Å resolution, sufficient to verify the identity of most amino acids in the capsid proteins and to establish the identity of ...
Xinzheng, Zhang +6 more
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GMS Hygiene and Infection Control, 2014 [english] Aim: During the last decade it became obvious that viruses belonging to and families (order Megavirales), may be potential causative agents of pneumonia. Thus, we have performed a review of the association of , , and virophages with pneumonia,
Kutikhin, Anton G. +2 more
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