Results 11 to 20 of about 779 (157)

Guarani Virophage, a New Sputnik-Like Isolate From a Brazilian Lake [PDF]

Frontiers in Microbiology, 2019
Virophages are critical regulators of viral population dynamics and potential actors in the stability of the microbial networks. These small biological entities predate the replicative cycle of giant viruses, such as the members of the Mimiviridae family
Said Mougari, Meriem Bekliz, Jonatas Santos Abrahão   +2 more
exaly   +5 more sources

Ecological and evolutionary dynamics of cell-virus-virophage systems. [PDF]

PLoS Computational Biology
Microbial eukaryotes, giant viruses and virophages form a unique hyperparasitic system. Virophages are parasites of the virus transcription machinery and can interfere with virus replication, resulting in a benefit to the eukaryotic host population ...
Jose Gabriel Nino Barreat, Aris Katzourakis   +1 more
doaj   +4 more sources

A New Zamilon-like Virophage Partial Genome Assembled from a Bioreactor Metagenome

Frontiers in Microbiology, 2015
Virophages replicate within viral factories inside the Acanthamoeba cytoplasm, and decrease the infectivity and replication of their associated giant viruses.
Meriem Bekliz, Samia Benamar, Didier Raoult   +2 more
exaly   +4 more sources

Seasonal dynamics and diversity of Antarctic marine viruses reveal a novel viral seascape [PDF]

Nature Communications
The Southern Ocean microbial ecosystem, with its pronounced seasonal shifts, is vulnerable to the impacts of climate change. Since viruses are key modulators of microbial abundance, diversity, and evolution, we need a better understanding of the effects ...
Gonçalo J. Piedade, Max E. Schön, Cédric Lood, Mikhail V. Fofanov, Ella M. Wesdorp, Tristan E. G. Biggs, Lingyi Wu, Henk Bolhuis, Matthias G. Fischer, Natalya Yutin, Bas E. Dutilh, Corina P. D. Brussaard   +11 more
doaj   +4 more sources

Virophages, Satellite Viruses, Virophage Replication and Its Effects and Virophage Defence Mechanisms for Giant Virus Hosts and Giant Virus Defence Systems against Virophages [PDF]

International Journal of Molecular Sciences
In this paper, the characteristics of 40 so far described virophages—parasites of giant viruses—are given, and the similarities and differences between virophages and satellite viruses, which also, like virophages, require helper viruses for replication,
Beata Tokarz-Deptuła, Łukasz Baraniecki, Michał Stosik   +2 more
exaly   +3 more sources

Genome-resolved biogeography of Phaeocystales, cosmopolitan bloom-forming algae [PDF]

Nature Communications
Phaeocystales, comprising the genus Phaeocystis and an uncharacterized sister lineage, are nanoplanktonic haptophytes widespread in the global ocean. Several species form mucilaginous colonies and influence key biogeochemical cycles, yet their underlying
Zoltán Füssy, Robert H. Lampe, Kevin R. Arrigo, Kerrie Barry, Margaret M. Brisbin, Corina P. D. Brussaard, Johan Decelle, Colomban de Vargas, Giacomo R. DiTullio, Liam D. H. Elbourne, Marc E. Frischer, David M. Goodstein, Igor V. Grigoriev, Richard D. Hayes, Adam L. Healey, Chase C. James, Jerry W. Jenkins, Caroline Juery, Manish Kumar, Adam B. Kustka, Florian Maumus, Anna M. G. Novák Vanclová, Miroslav Oborník, Ian T. Paulsen, Ian Probert, Mak A. Saito, Jeremy Schmutz, Tomáš Skalický, Diego Tec-Campos, Hannah Tomelka, Pavlína Věchtová, Pratap Venepally, Brendan Wilson-Mortier, Karsten Zengler, Hong Zheng, Andrew E. Allen   +35 more
doaj   +3 more sources

A billion years arms-race between viruses, virophages, and eukaryotes [PDF]

eLife, 2023
Bamfordviruses are arguably the most diverse group of viruses infecting eukaryotes. They include the Nucleocytoplasmic Large DNA viruses (NCLDVs), virophages, adenoviruses, Mavericks and Polinton-like viruses.
Jose Gabriel Nino Barreat, Aris Katzourakis   +1 more
doaj   +2 more sources

Virophages and retrotransposons colonize the genomes of a heterotrophic flagellate [PDF]

eLife, 2021
Virophages can parasitize giant DNA viruses and may provide adaptive anti-giant virus defense in unicellular eukaryotes. Under laboratory conditions, the virophage mavirus integrates into the nuclear genome of the marine flagellate Cafeteria burkhardae ...
Thomas Hackl, Sarah Duponchel, Karina Barenhoff, Alexa Weinmann, Matthias G Fischer   +4 more
doaj   +2 more sources

Structures of two main components of the virophage and Marseilleviridae virions extend the range of unrelated viruses using fiber head as common receptor binding fold

bioRxiv, 2023
The detailed proteomic analysis of Marseilleviridae icosahedral capsids revealed that the two most abundant protein components of the virions were the Major Capsid Protein (MCP) and the product of an ORFan gene conserved in all Marseilleviridae .
Garcin, Elsa, Abergel, Chantal, Jeudy, Sandra, Schmitt, Alain   +3 more
core   +2 more sources

Viral dynamics in a high-rate algal pond reveals a burst of Phycodnaviridae diversity correlated with episodic algal mortality [PDF]

mBio
This study explores virus-host dynamics in a unique environment: an industrial high-rate algal pond (HRAP). A wealth of novel DNA algal viruses are revealed, including members of Nucleocytoviricota “giant viruses” and the enigmatic Preplasmiviricota (e.g.
E. E. Chase, T. Pitot, S. Bouchard, S. Triplet, C. Przybyla, A. Gobet, C. Desnues, G. Blanc   +7 more
doaj   +2 more sources