Results 51 to 60 of about 42,609 (185)

Kinetic Analysis of Acanthamoeba castellanii Infected with Giant Viruses Quantitatively Revealed Process of Morphological and Behavioral Changes in Host Cells

Microbiology Spectrum, 2021
Most virus-infected cells show morphological and behavioral changes, which are called cytopathic effects. Acanthamoeba castellanii, an abundant, free-living protozoan, serves as a laboratory host for some viruses of the phylum Nucleocytoviricota—the ...
Sho Fukaya, Masaharu Takemura
doaj   +1 more source

Complex transcriptional regulations of a hyperparasitic quadripartite system in giant viruses infecting protists

Nature Communications
Hyperparasitism is a common pattern in nature that is not limited to cellular organisms. Giant viruses infecting protists can be hyperparasitized by smaller ones named virophages.
Alexandra Bessenay, Hugo Bisio, Lucid Belmudes, Yohann Couté, Lionel Bertaux, Jean-Michel Claverie, Chantal Abergel, Sandra Jeudy, Matthieu Legendre   +8 more
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Virologs, viral mimicry, and virocell metabolism: the expanding scale of cellular functions encoded in the complex genomes of giant viruses [PDF]

, 2023
Mohammad Moniruzzaman, Maria Paula Erazo Garcia, Roxanna Farzad, Anh D. Ha, Abdeali M. Jivaji, Sangita Karki, Uri Sheyn, Joshua Stanton, Benjamin Minch, Danae Stephens, Dustin C. Hancks, Rodrigo Araújo Lima Rodrigues, Jônatas Santos Abrahão, Assaf Vardi, Frank O. Aylward   +14 more
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A Large Open Pangenome and a Small Core Genome for Giant Pandoraviruses

Frontiers in Microbiology, 2018
Giant viruses of amoebae are distinct from classical viruses by the giant size of their virions and genomes. Pandoraviruses are the record holders in size of genomes and number of predicted genes. Three strains, P. salinus, P. dulcis, and P.
Sarah Aherfi, Julien Andreani, Emeline Baptiste, Amina Oumessoum, Fábio P. Dornas, Ana Claudia dos S. P. Andrade, Eric Chabriere, Jonatas Abrahao, Anthony Levasseur, Didier Raoult, Bernard La Scola, Philippe Colson   +11 more
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Morphological and Genomic Features of the New Klosneuvirinae Isolate Fadolivirus IHUMI-VV54

Frontiers in Microbiology, 2021
Since the discovery of Mimivirus, viruses with large genomes encoding components of the translation machinery and other cellular processes have been described as belonging to the nucleocytoplasmic large DNA viruses. Recently, genome-resolved metagenomics
Julien Andreani, Frederik Schulz, Fabrizio Di Pinto, Anthony Levasseur, Tanja Woyke, Bernard La Scola   +5 more
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Giant virus varieties keep growing [PDF]

Science, 2015
Virology![Figure][1] Transmission electron micrograph of a Mollivirus particle PHOTO: M. LEGENDRE ET AL., PNAS PLUS (8 SEPTEMBER 2015) © PNAS A recent fascinating development in basic virology has been the discovery of “giant” viruses that are visible by light microscopy. Legendre et al.
openaire   +1 more source

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

Journal 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, Georgi Nikolov, Martin Kunert, Matthias Horn, Anouk Willemsen   +4 more
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Giant Viruses—Big Surprises

Viruses, 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

Lausannevirus, a giant amoebal virus encoding histone doublets [PDF]

Environmental Microbiology, 2011
Summary Large viruses infecting algae or amoebae belong to the NucleoCytoplasmic Large DNA Viruses (NCLDV) and present genotypic and phenotypic characteristics that have raised major interest among microbiologists. Here, we describe a new large virus discovered in Acanthamoeba castellanii
Thomas, Vincent, Bertelli, Claire, Collyn, Francois, Casson, Nicola, Telenti, Amalio, Goesmann, Alexander, Croxatto, Antony, Greub, Gilbert   +7 more
openaire   +6 more sources

Giant viruses in the oceans: the 4th Algal Virus Workshop [PDF]

Virology Journal, 2005
Abstract Giant double-stranded DNA viruses (such as record breaking Acanthamoeba polyphaga Mimivirus), with particle sizes of 0.2 to 0.6 μm, genomes of 300 kbp to 1.200 kbp, and commensurate complex gene contents, constitute an evolutionary mystery.
openaire   +4 more sources