Relevant bibliographies by topics / Polinton- like viruses

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Academic literature on the topic 'Polinton- like viruses'

Author: Grafiati
Published: 25 May 2024
Last updated: 19 July 2025

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Journal articles on the topic "Polinton- like viruses"

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Roux, Simon, Matthias G. Fischer, Thomas Hackl, Laura A. Katz, Frederik Schulz, and Natalya Yutin. "Updated Virophage Taxonomy and Distinction from Polinton-like Viruses." Biomolecules 13, no. 2 (2023): 204. http://dx.doi.org/10.3390/biom13020204.

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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. While only a handful of virophages have been isolated, a vast diversity of virophage-like sequences have been uncovered from diverse metagenomes. Their wide ecological distribution, idiosyncratic infection and replication strategy, ability to integrate into protist and giant virus genomes and potential role in antiviral defense have made virophages a topic of broad interest. How
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Krupovic, Mart, Natalya Yutin, and Eugene V. Koonin. "Fusion of a superfamily 1 helicase and an inactivated DNA polymerase is a signature of common evolutionary history of Polintons, polinton-like viruses, Tlr1 transposons and transpovirons." Virus Evolution 2, no. 1 (2016): vew019. http://dx.doi.org/10.1093/ve/vew019.

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Bellas, Christopher M., and Ruben Sommaruga. "Polinton-like viruses are abundant in aquatic ecosystems." Microbiome 9, no. 1 (2021). http://dx.doi.org/10.1186/s40168-020-00956-0.

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Abstract Background Polintons are large mobile genetic elements found in the genomes of eukaryotic organisms that are considered the ancient ancestors of most eukaryotic dsDNA viruses. Originally considered as transposons, they have been found to encode virus capsid genes, suggesting they may actually be integrated viruses; however, an extracellular form has yet to be detected. Recently, circa 25 Polinton-like viruses have been discovered in environmental metagenomes and algal genomes, which shared distantly related genes to both Polintons and virophages (Lavidaviridae). These entities could b
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4

Koonin, Eugene V., Matthias G. Fischer, Jens H. Kuhn, and Mart Krupovic. "The polinton-like supergroup of viruses: evolution, molecular biology, and taxonomy." Microbiology and Molecular Biology Reviews, July 18, 2024. http://dx.doi.org/10.1128/mmbr.00086-23.

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SUMMARY Polintons are 15–20 kb-long self-synthesizing transposons that are widespread in eukaryotic, and in particular protist, genomes. Apart from a transposase and a protein-primed DNA polymerase, polintons encode homologs of major and minor jelly-roll capsid proteins, DNA-packaging ATPases, and proteases involved in capsid maturation of diverse eukaryotic viruses of kingdom Bamfordvirae . Given the conservation of these structural and morphogenetic proteins among polintons, these elements are predicted to alternate between transposon and viral lifestyles and, although virions have thus far
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Starrett, Gabriel J., Michael J. Tisza, Nicole L. Welch, et al. "Adintoviruses: A Proposed Animal-Tropic Family of Midsize Eukaryotic Linear dsDNA (MELD) Viruses." Virus Evolution, October 1, 2020. http://dx.doi.org/10.1093/ve/veaa055.

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Abstract Polintons (also known as Mavericks) were initially identified as a widespread class of eukaryotic transposons named for their hallmark type B DNA polymerase and retrovirus-like integrase genes. It has since been recognized that many polintons encode possible capsid proteins and viral genome-packaging ATPases similar to those of a diverse range of double-stranded DNA (dsDNA) viruses. This supports the inference that at least some polintons are actually viruses capable of cell-to-cell spread. At present, there are no polinton-associated capsid protein genes annotated in public sequence
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Krupovic, Mart, Jens H. Kuhn, Matthias G. Fischer, and Eugene V. Koonin. "Natural history of eukaryotic DNA viruses with double jelly-roll major capsid proteins." Proceedings of the National Academy of Sciences 121, no. 23 (2024). http://dx.doi.org/10.1073/pnas.2405771121.

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The phylum Preplasmiviricota (kingdom Bamfordvirae , realm Varidnaviria ) is a broad assemblage of diverse viruses with comparatively short double-stranded DNA genomes (<50 kbp) that produce icosahedral capsids built from double jelly-roll major capsid proteins. Preplasmiviricots infect hosts from all cellular domains, testifying to their ancient origin, and, in particular, are associated with six of the seven supergroups of eukaryotes. Preplasmiviricots comprise four major groups of viruses, namely, polintons, polinton-like viruses (PLVs), virophages, and adenovirids. We used protein struc
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7

Bellas, Christopher, Thomas Hackl, Marie-Sophie Plakolb, Anna Koslová, Matthias G. Fischer, and Ruben Sommaruga. "Large-scale invasion of unicellular eukaryotic genomes by integrating DNA viruses." Proceedings of the National Academy of Sciences 120, no. 16 (2023). http://dx.doi.org/10.1073/pnas.2300465120.

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Eukaryotic genomes contain a variety of endogenous viral elements (EVEs), which are mostly derived from RNA and ssDNA viruses that are no longer functional and are considered to be “genomic fossils.” Genomic surveys of EVEs, however, are strongly biased toward animals and plants, whereas protists, which represent the majority of eukaryotic diversity, remain poorly represented. Here, we show that protist genomes harbor tens to thousands of diverse, ~14 to 40 kbp long dsDNA viruses. These EVEs, composed of virophages, Polinton-like viruses, and related entities, have remained hitherto hidden owi
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8

Bellas, Christopher M., and Ruben Sommaruga. "Correction to: Polinton-like viruses are abundant in aquatic ecosystems." Microbiome 9, no. 1 (2021). http://dx.doi.org/10.1186/s40168-021-01004-1.

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9

Bulzu, Paul-Adrian, Helena Henriques Vieira, and Rohit Ghai. "Lineage-specific expansions of polinton-like viruses in photosynthetic cryptophytes." Microbiome 13, no. 1 (2025). https://doi.org/10.1186/s40168-025-02148-0.

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Abstract Background Polinton-like viruses (PLVs) are diverse eukaryotic DNA viral elements (14–40 kb) that often undergo significant expansion within protist genomes through repeated insertion events. Emerging evidence indicates they function as antiviral defense systems in protists, reducing the progeny yield of their infecting giant viruses (phylum Nucleocytoviricota) and influencing the population dynamics and evolution of both viruses and their hosts. While many PLVs have been identified within the genomes of sequenced protists, most were recovered from metagenomic data. Even with the larg
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10

Chase, E. E., T. Pitot, S. Bouchard, et al. "Viral dynamics in a high-rate algal pond reveals a burst of Phycodnaviridae diversity correlated with episodic algal mortality." mBio, November 12, 2024. http://dx.doi.org/10.1128/mbio.02803-24.

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ABSTRACT 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., virophages and polinton-like viruses). Several species of single-celled eukaryotic photosynthetic algae are identified (Chlorophyta) as putative hosts, with alternating dominant populations during the year of study. We specifically observe a surprising diversity of giant viruses from the family Phycodnaviridae ( Nucleocytoviricota )
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Dissertations / Theses on the topic "Polinton- like viruses"

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Chase, Emily. "PHYCOVIR : diversity and dynamics of viruses in a high-density microalgae culture." Electronic Thesis or Diss., Aix-Marseille, 2021. http://www.theses.fr/2021AIXM0554.

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Ce travail de thèse a été consacrée à l'étude d'un bassin de culture de microalgues (HRAP) avec l'objectif d'examiner les épisodes de mortalité massive, dont la cause est inconnue. Nous avons testé l'hypothèse que des virus de microalgues pourraient être responsables. Cette étude représente la première tentative d'exploration de la diversité virale dans un HRAP, en même temps que la collecte de données des hôtes potentiels grâce au métabarcodage 18S. L’analyse bioinformatique de métagénomes a permis d’identifier des virus présents dans le HRAP, et la dynamique de leurs populations a été suivie
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