Academic literature on the topic 'Nucleocytoviricota'

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Journal articles on the topic "Nucleocytoviricota"

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Aylward, Frank O., Mohammad Moniruzzaman, Anh D. Ha, and Eugene V. Koonin. "A phylogenomic framework for charting the diversity and evolution of giant viruses." PLOS Biology 19, no. 10 (2021): e3001430. http://dx.doi.org/10.1371/journal.pbio.3001430.

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Large DNA viruses of the phylum Nucleocytoviricota have recently emerged as important members of ecosystems around the globe that challenge traditional views of viral complexity. Numerous members of this phylum that cannot be classified within established families have recently been reported, and there is presently a strong need for a robust phylogenomic and taxonomic framework for these viruses. Here, we report a comprehensive phylogenomic analysis of the Nucleocytoviricota, present a set of giant virus orthologous groups (GVOGs) together with a benchmarked reference phylogeny, and delineate
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Gaïa, Morgan, and Patrick Forterre. "From Mimivirus to Mirusvirus: The Quest for Hidden Giants." Viruses 15, no. 8 (2023): 1758. http://dx.doi.org/10.3390/v15081758.

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Our perception of viruses has been drastically evolving since the inception of the field of virology over a century ago. In particular, the discovery of giant viruses from the Nucleocytoviricota phylum marked a pivotal moment. Their previously concealed diversity and abundance unearthed an unprecedented complexity in the virus world, a complexity that called for new definitions and concepts. These giant viruses underscore the intricate interactions that unfold over time between viruses and their hosts, and are themselves suspected to have played a significant role as a driving force in the evo
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de Souza, Fernanda Gil, Jônatas Santos Abrahão, and Rodrigo Araújo Lima Rodrigues. "Comparative Analysis of Transcriptional Regulation Patterns: Understanding the Gene Expression Profile in Nucleocytoviricota." Pathogens 10, no. 8 (2021): 935. http://dx.doi.org/10.3390/pathogens10080935.

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The nucleocytoplasmic large DNA viruses (NCLDV) possess unique characteristics that have drawn the attention of the scientific community, and they are now classified in the phylum Nucleocytoviricota. They are characterized by sharing many genes and have their own transcriptional apparatus, which provides certain independence from their host’s machinery. Thus, the presence of a robust transcriptional apparatus has raised much discussion about the evolutionary aspects of these viruses and their genomes. Understanding the transcriptional process in NCLDV would provide information regarding their
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Rodrigues, Rodrigo AL, Fernanda G. de Souza, Bruna L. de Azevedo, Lorena CF da Silva, and Jônatas S. Abrahão. "The morphogenesis of different giant viruses as additional evidence for a common origin of Nucleocytoviricota." Current Opinion in Virology 49 (August 2021): 102–10. http://dx.doi.org/10.1016/j.coviro.2021.05.004.

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Moreira, Thaís I. R., João Victor R. P. Carvalho, Clécio A. C. Filho, et al. "Investigations into the Diversity and Distribution of tRNA and Phylogenetics of Translation Factors in Amoebozoa-Infecting Nucleocytoviricota." Viruses 17, no. 3 (2025): 328. https://doi.org/10.3390/v17030328.

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Translation is a sine qua non process for life as we know it. Translation factors (TFs) and tRNAs are rare among viruses but are commonly found in giant viruses of the class Megaviricetes. In this study, we explored the diversity and distribution of tRNAs in giant viruses that were isolated and replicated in amoebae (phylum Amoebozoa), and investigated the evolutionary history of TFs to gain insights into their origins in these viruses. We analyzed the genomes of 77 isolated giant viruses, 52 of which contained at least 1 tRNA. In most of these viruses, tRNA sequences are dispersed throughout
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Ruiz Martínez, Eliana, Dean A. Mckeown, Declan C. Schroeder, et al. "Phaeoviruses Present in Cultured and Natural Kelp Species, Saccharina latissima and Laminaria hyperborea (Phaeophyceae, Laminariales), in Norway." Viruses 15, no. 12 (2023): 2331. http://dx.doi.org/10.3390/v15122331.

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Phaeoviruses (Phycodnaviridae) are large icosahedral viruses in the phylum Nucleocytoviricota with dsDNA genomes ranging from 160 to 560 kb, infecting multicellular brown algae (Phaeophyceae). The phaeoviral host range is broader than expected, not only infecting algae from the Ectocarpales but also from the Laminariales order. However, despite phaeoviral infections being reported globally, Norwegian kelp species have not been screened. A molecular analysis of cultured and wild samples of two economically important kelp species in Norway (Saccharina latissima and Laminaria hyperborea) revealed
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de Oliveira, Ellen Gonçalves, João Victor Rodrigues Pessoa Carvalho, Bruna Barbosa Botelho, et al. "Giant Viruses as a Source of Novel Enzymes for Biotechnological Application." Pathogens 11, no. 12 (2022): 1453. http://dx.doi.org/10.3390/pathogens11121453.

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The global demand for industrial enzymes has been increasing in recent years, and the search for new sources of these biological products is intense, especially in microorganisms. Most known viruses have limited genetic machinery and, thus, have been overlooked by the enzyme industry for years. However, a peculiar group of viruses breaks this paradigm. Giant viruses of the phylum Nucleocytoviricota infect protists (i.e., algae and amoebae) and have complex genomes, reaching up to 2.7 Mb in length and encoding hundreds of genes. Different giant viruses have robust metabolic machinery, especiall
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Claverie, Jean-Michel. "Fundamental Difficulties Prevent the Reconstruction of the Deep Phylogeny of Viruses." Viruses 12, no. 10 (2020): 1130. http://dx.doi.org/10.3390/v12101130.

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The extension of virology beyond its traditional medical, veterinary, or agricultural applications, now called environmental virology, has shown that viruses are both the most numerous and diverse biological entities on Earth. In particular, virus isolations from unicellular eukaryotic hosts (heterotrophic and photosynthetic protozoans) revealed numerous viral types previously unexpected in terms of virion structure, gene content, or mode of replication. Complemented by large-scale metagenomic analyses, these discoveries have rekindled interest in the enigma of the origin of viruses, for which
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Kukovetz, Kerri, Brigitte Hertel, Christopher R. Schvarcz, et al. "A Functional K+ Channel from Tetraselmis Virus 1, a Member of the Mimiviridae." Viruses 12, no. 10 (2020): 1107. http://dx.doi.org/10.3390/v12101107.

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Potassium ion (K+) channels have been observed in diverse viruses that infect eukaryotic marine and freshwater algae. However, experimental evidence for functional K+ channels among these alga-infecting viruses has thus far been restricted to members of the family Phycodnaviridae, which are large, double-stranded DNA viruses within the phylum Nucleocytoviricota. Recent sequencing projects revealed that alga-infecting members of Mimiviridae, another family within this phylum, may also contain genes encoding K+ channels. Here we examine the structural features and the functional properties of pu
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Kyndt, Elliot C., and John A. Kyndt. "Illumina Short-Read Sequencing of the Mitogenomes of Novel Scarites subterraneus Isolates Allows for Taxonomic Refinement of the Genus Scarites Fabricius 1775, within the Carabidae Family." Insects 13, no. 2 (2022): 190. http://dx.doi.org/10.3390/insects13020190.

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We sequenced the complete mitogenomes, 18S and 28S rRNA of two new Scarites isolates, collected in Eastern Nebraska and Northern Arkansas (US). Based on molecular sequence data comparison and morphological characteristics, the new isolates were identified as a subspecies of Scarites subterraneus Fabricius 1775, for which we propose the subspecies names ‘nebraskensis’ and ‘arkansensis’. The new 18S and 28S rRNA sequences were found to be 99% and 98% identical to Scarites subterraneus. There are no other Scarites 18S or 28S rRNA sequences in the Genbank database, however, phylogenetic analysis o
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Dissertations / Theses on the topic "Nucleocytoviricota"

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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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Book chapters on the topic "Nucleocytoviricota"

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Waltzek, Thomas B., Kuttichantran Subramaniam, and James K. Jancovich. "Ranavirus Taxonomy and Phylogeny." In Ranaviruses. Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-64973-8_2.

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AbstractThe phylum Nucleocytoviricota, known informally as the Nucleocytoplasmic Large DNA Viruses (NCLDV), is a monophyletic assemblage of viruses that infect eukaryotes, ranging from single-celled organisms to humans, worldwide. The NCLDV phylum encompasses two classes (Megaviricetes, Pokkesviricetes), five orders (Pimascovirales, Imitervirales, Algavirales, Asfuvirales, Chitovirales), and 11 families, including the family Iridoviridae (https://ictv.global/). Members of the NCLDV group have some of the largest known viral genomes. For example, members of the family Mimiviridae have genomes t
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Xian, Yuejiao, and Chuan Xiao. "Current capsid assembly models of icosahedral nucleocytoviricota viruses." In Virus Assembly and Exit Pathways. Elsevier, 2020. http://dx.doi.org/10.1016/bs.aivir.2020.09.006.

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