Results 61 to 70 of about 2,202,855 (179)

Genomic analysis of the smallest giant virus — Feldmannia sp. virus 158

Virology, 2009
Genomic analysis of Feldmannia sp. virus 158, the second phaeovirus to be sequenced in its entirety, provides further evidence that large double-stranded DNA viruses share similar evolutionary pressures as cellular organisms. Reductive evolution is clearly evident within the phaeoviruses which occurred via several routes: the loss of genes from an ...
Schroeder, Declan C., Park, Yunjung, Yoon, Hong-Mook, Lee, Yong Seok, Kang, Se Won, Meints, Russel H., Ivey, Richard G., Choi, Tae-Jin   +7 more
openaire   +2 more sources

Phylogenetic diversity and functional potential of large and cell-associated viruses in the Bay of Bengal

mSphere, 2023
The Bay of Bengal (BoB) is the world’s largest bay, offering essential services like fishing and recreation while holding significant economic value for coastal communities. However, the BoB faces environmental challenges from monsoons, freshwater inputs,
Benjamin Minch, Salma Akter, Alaina Weinheimer, M. Shaminur Rahman, Md Anowar Khasru Parvez, Sabita Rezwana Rahman, Md Firoz Ahmed, Mohammad Moniruzzaman   +7 more
doaj   +1 more source

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
doaj   +1 more source

Early-Phase Drive to the Precursor Pool: Chloroviruses Dive into the Deep End of Nucleotide Metabolism

Viruses, 2023
Viruses face many challenges on their road to successful replication, and they meet those challenges by reprogramming the intracellular environment. Two major issues challenging Paramecium bursaria chlorella virus 1 (PBCV-1, genus Chlorovirus, family ...
David D. Dunigan, Irina V. Agarkova, Ahmed Esmael, Sophie Alvarez, James L. Van Etten   +4 more
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
doaj   +1 more source

Commensalism in theMimiviridaegiant virus family [PDF]

, 2019
AbstractAcanthamoeba-infecting Mimiviridae belong to three clades: Mimiviruses (A), Moumouviruses (B) and Megaviruses (C). The uniquely complex mobilome of these giant viruses includes virophages and linear 7 kb-DNA molecules called “transpovirons”. We recently isolated a virophage (Zamilon vitis) and two transpovirons (maBtv and mvCtv) respectively ...
Jeudy, Sandra, Bertaux, Lionel, Alempic, Jean-Marie, Lartigue, Audrey, Legendre, Matthieu, Belmudes, Lucid, Santini, Sébastien, Philippe, Nadège, Beucher, Laure, Biondi, Emanuele G., Juul, Sissel, Turner, Daniel J., Couté, Yohann, Claverie, Jean-Michel, Abergel, Chantal   +14 more
openaire   +1 more source

A giant virus infecting green algae encodes key fermentation genes.

Virology, 2018
The family Mimiviridae contains uncommonly large viruses, many of which were isolated using a free-living amoeba as a host. Although the genomes of these and other mimivirids that infect marine heterokont and haptophyte protists have now been sequenced ...
Christopher R. Schvarcz, Grieg F. Steward   +1 more
semanticscholar   +1 more source

The Secret Life of Giant Viruses in the California Current

mSystems, 2021
In the last few decades, the virology field has experienced a revolution in knowledge related to viral richness, diversity, and distribution in the oceans.
Jônatas Santos Abrahão
doaj   +1 more source

Infection by a Giant Virus (AaV) Induces Widespread Physiological Reprogramming in Aureococcus anophagefferens CCMP1984 – A Harmful Bloom Algae

Frontiers in Microbiology, 2018
While viruses with distinct phylogenetic origins and different nucleic acid types can infect and lyse eukaryotic phytoplankton, “giant” dsDNA viruses have been found to be associated with important ecological processes, including the collapse of algal ...
M. Moniruzzaman, Eric R. Gann, S. Wilhelm   +2 more
semanticscholar   +1 more source

Giant Viruses: Conflicts in Revisiting the Virus Concept [PDF]

Intervirology, 2010
The current paradigm on the nature of viruses is based on early work of the ‘phage group’ (the pro-phage concept) and molecular biologists working on tumour viruses (the proto-oncogene concept). It posits that viruses evolved from either prokaryotic or eukaryotic cellular genes that became infectious via their association with capsid genes.
openaire   +3 more sources