Results 31 to 40 of about 459 (134)

Presence of CRISPR CAS‐Like Sequences as a Proposed Mechanism for Horizontal Genetic Exchanges between Trichomonas vaginalis and Its Associated Virus: A Comparative Genomic Analysis with the First Report of a Putative CRISPR CAS Structures in Eukaryotic Cells

BioMed Research International, Volume 2023, Issue 1, 2023., 2023
Introduction. Trichomonas vaginalis genome is among the largest genome size and coding capacities. Combinations of gene duplications, transposon, repeated sequences, and lateral gene transfers (LGTs) have contributed to the unexpected large genomic size and diversity. This study is aimed at investigating genomic exchange and seeking for presence of the
Azra Kenarkoohi, Amir Abdoli, Arman Rostamzad, Mahmoud Rashnavadi, Razi Naserifar, Jahangir Abdi, Morteza Shams, Arezoo Bozorgomid, Sepideh Saeb, Dhurgham Al-Fahad, Kosar Khezri, Shahab Falahi, Shibiao Wan   +12 more
wiley   +1 more source

Bacteriophages pass through candle‐shaped porous ceramic filters: Application for the collection of viruses in soil water

MicrobiologyOpen, Volume 11, Issue 5, October 2022., 2022
This study proposes to use porous candles as a new tool for collecting soil water viruses. In the first step, the passage of model viruses through the ceramic part of the candles was investigated. Regarding the field application, the experiments carried out showed a successful recovery of viruses, demonstrating the relevance and efficiency of such a ...
Perrine Florent, Henry‐Michel Cauchie, Malte Herold, Leslie Ogorzaly   +3 more
wiley   +1 more source

Infection by dsRNA viruses is associated with enhanced sporulation efficiency in Saccharomyces cerevisiae

Ecology and Evolution, Volume 12, Issue 1, January 2022., 2022
Sporulation in yeast is induced by starvation; resource exploitation by endosymbiont should induce earlier sporulation. We find that the presence of two dsRNA viruses is linked to enhanced sporulation in Saccharomyces cerevisiae. However, further research is required to determine whether high sporulation leads to infection or infection leads to higher ...
Thomas J. Travers Cook, Christina Skirgaila, Oliver Y. Martin, Claudia C. Buser   +3 more
wiley   +1 more source

Disentangling the origins of virophages and polintons [PDF]

Current Opinion in Virology, 2017
Virophages and polintons are part of a complex system that also involves eukaryotes, giant viruses, as well as other viruses and transposable elements. Virophages are cosmopolitan, being found in environments ranging from the Amazon River to Antarctic hypersaline lakes, while polintons are found in many single celled and multicellular eukaryotes ...
Campbell, S, Aswad, A, Katzourakis, A
openaire   +3 more sources

Ancient saltern metagenomics: tracking changes in microbes and their viruses from the underground to the surface

Environmental Microbiology, Volume 23, Issue 7, Page 3477-3498, July 2021., 2021
Summary Microbial communities in hypersaline underground waters derive from ancient organisms trapped within the evaporitic salt crystals and are part of the poorly known subterranean biosphere. Here, we characterized the viral and prokaryotic assemblages present in the hypersaline springs that dissolve Triassic‐Keuper evaporite rocks and feed the ...
Mª Dolores Ramos‐Barbero, Tomeu Viver, Ane Zabaleta, Ece Senel, María Gomariz, Iñaki Antigüedad, Fernando Santos, Manuel Martínez‐García, Ramon Rosselló‐Móra, Josefa Antón   +9 more
wiley   +1 more source

Structural Studies of the Sputnik Virophage [PDF]

Journal of Virology, 2010
ABSTRACT The virophage Sputnik is a satellite virus of the giant mimivirus and is the only satellite virus reported to date whose propagation adversely affects its host virus' production. Genome sequence analysis showed that Sputnik has genes related to viruses infecting all three domains of life. Here, we report structural studies of Sputnik,
Sun, S. Y., La Scola, B., Bowman, V. D., Ryan, C. M., Whitelegge, J. P., /Raoult, Didier, Rossmann, M. G.   +6 more
openaire   +3 more sources

Diversity of Virophages in Metagenomic Data Sets [PDF]

Journal of Virology, 2013
ABSTRACT Virophages, e.g., Sputnik, Mavirus, and Organic Lake virophage (OLV), are unusual parasites of giant double-stranded DNA (dsDNA) viruses, yet little is known about their diversity. Here, we describe the global distribution, abundance, and genetic diversity of virophages based on analyzing and mapping comprehensive metagenomic
Zhou, J., Zhang, W., Yan, Shuling, Xiao, Jinzhou, Zhang, Y., Li, Bailin, Pan, Yingjie, Wang, Y.   +7 more
openaire   +3 more sources

The Virophage Family Lavidaviridae [PDF]

Current Issues in Molecular Biology, 2018
Double-stranded (ds) DNA viruses of the family Lavidaviridae, commonly known as virophages, are a fascinating group of eukaryotic viruses that depend on a coinfecting giant dsDNA virus of the Mimiviridae for their propagation. Instead of replicating in the nucleus, virophages multiply in the cytoplasmic virion factory of a coinfecting giant virus ...
openaire   +4 more sources

Acanthamoeba polyphaga mimivirus Virophage Seroconversion in Travelers Returning from Laos

Emerging Infectious Diseases, 2012
During January 2010, a husband and wife returned from Laos to France with probable parasitic disease. Increased antibodies against an Acanthamoeba polyphaga mimivirus virophage indicated seroconversion. While in Laos, they had eaten raw fish, a potential
Philippe Parola, Aurélie Renvoisé, Elisabeth Botelho-Nevers, Bernard La Scola, Christelle Desnues, Didier Raoult   +5 more
doaj   +1 more source

Evolution of exploitation and replication of giant viruses and virophages. [PDF]

Virus Evol
Abstract 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