Results 71 to 80 of about 2,202,855 (179)

Updated Virophage Taxonomy and Distinction from Polinton-like Viruses

open access: yesBiomolecules, 2023
Virophages are small dsDNA viruses that hijack the machinery of giant viruses during the co-infection of a protist (i.e., microeukaryotic) host and represent an exceptional case of “hyperparasitism” in the viral world.
Simon Roux   +5 more
doaj   +1 more source

Ecogenomics of virophages and their giant virus hosts assessed through time series metagenomics

open access: yesNature Communications, 2017
Virophages are small viruses that co-infect eukaryotic cells alongside giant viruses (Mimiviridae) and hijack their machinery to replicate. While two types of virophages have been isolated, their genomic diversity and ecology remain largely unknown. Here
S. Roux   +5 more
semanticscholar   +1 more source

Mimivirus transcription and translation occur at well-defined locations within amoeba host cells

open access: yesJournal of Virology
Many giant viruses replicate in the cytoplasm in viral factories. How exactly these viral factories are established and where the different steps of the replication cycle occur remain largely obscure.
Lotte Mayer   +4 more
doaj   +1 more source

Virus Genomes from Deep Sea Sediments Expand the Ocean Megavirome and Support Independent Origins of Viral Gigantism

open access: yesmBio, 2019
The nucleocytoplasmic large DNA viruses (NCLDV) of eukaryotes (proposed order, “Megavirales”) include the families Poxviridae, Asfarviridae, Iridoviridae, Ascoviridae, Phycodnaviridae, Marseilleviridae, and Mimiviridae, as well as still unclassified ...
Disa Bäckström   +9 more
doaj   +1 more source

Medusavirus Ancestor in a Proto-Eukaryotic Cell: Updating the Hypothesis for the Viral Origin of the Nucleus

open access: yesFrontiers in Microbiology, 2020
The mechanistic evolutionary origin of the eukaryotic cell nucleus remains unknown. Among several plausible hypotheses, the most controversial is that large DNA viruses, such as poxviruses, led to the emergence of the eukaryotic cell nucleus.
Masaharu Takemura
doaj   +1 more source

Cedratvirus, a Double-Cork Structured Giant Virus, is a Distant Relative of Pithoviruses

open access: yesViruses, 2016
Most viruses are known for the ability to cause symptomatic diseases in humans and other animals. The discovery of Acanthamoeba polyphaga mimivirus and other giant amoebal viruses revealed a considerable and previously unknown area of uncharacterized ...
J. Andreani   +7 more
semanticscholar   +1 more source

Giant Viruses—Big Surprises

open access: yesViruses, 2019
Viruses are the most prevalent infectious agents, populating almost every ecosystem on earth. Most viruses carry only a handful of genes supporting their replication and the production of capsids.
Nadav Brandes, Michal Linial
doaj   +1 more source

Giant Magnetoresistance-based Biosensor for Detection of Influenza A Virus [PDF]

open access: yesFrontiers in Microbiology, 2016
We have developed a simple and sensitive method for the detection of influenza A virus based on giant magnetoresistance (GMR) biosensor. This assay employs monoclonal antibodies to viral nucleoprotein (NP) in combination with magnetic nanoparticles (MNPs).
Krishna, Venkatramana D.   +3 more
openaire   +3 more sources

Host genome integration and giant virus-induced reactivation of the virophage mavirus

open access: yesNature, 2016
Endogenous viral elements are increasingly found in eukaryotic genomes, yet little is known about their origins, dynamics, or function. Here we provide a compelling example of a DNA virus that readily integrates into a eukaryotic genome where it acts as ...
M. Fischer, T. Hackl
semanticscholar   +1 more source

In-depth study of Mollivirus sibericum, a new 30,000-y-old giant virus infecting Acanthamoeba

open access: yesProceedings of the National Academy of Sciences of the United States of America, 2015
Significance The saga of giant viruses (i.e. visible by light microscopy) started in 2003 with the discovery of Mimivirus. Two additional types of giant viruses infecting Acanthamoeba have been discovered since: the Pandoraviruses (2013) and Pithovirus ...
M. Legendre   +14 more
semanticscholar   +1 more source

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