Results 71 to 80 of about 2,168 (192)

Exploring Viral Diversity in a Unique South African Soil Habitat [PDF]

, 2018
The Kogelberg Biosphere Reserve in the Cape Floral Kingdom in South Africa is known for its unique plant biodiversity. The potential presence of unique microbial and viral biodiversity associated with this unique plant biodiversity led us to explore the ...
Adriaenssens, Evelien, Cowan, Don, Rashamuse, Konanani, Segobola, Jane, Tsekoa, Tsepo   +4 more
core   +2 more sources

Extensive in silico analysis of Mimivirus coded Rab GTPase homolog suggests a possible role in virion membrane biogenesis

Frontiers in Microbiology, 2015
Rab GTPases are the key regulators of intracellular membrane trafficking in eukaryotes. Many viruses and intracellular bacterial pathogens have evolved to hijack the host Rab GTPase functions, mainly through activators and effector proteins, for their ...
Amrutraj eZade, Malavi eSengupta, Kiran eKondabagil   +2 more
doaj   +1 more source

The giant Cafeteria roenbergensis virus that infects a widespread marine phagocytic protist is a new member of the fourth domain of Life.

PLoS ONE, 2011
BackgroundA recent work has provided strong arguments in favor of a fourth domain of Life composed of nucleo-cytoplasmic large DNA viruses (NCLDVs). This hypothesis was supported by phylogenetic and phyletic analyses based on a common set of proteins ...
Philippe Colson, Gregory Gimenez, Mickaël Boyer, Ghislain Fournous, Didier Raoult   +4 more
doaj   +1 more source

Extension of the viral ecology in humans using viral profile hidden Markov models. [PDF]

PLoS ONE, 2018
When human samples are sequenced, many assembled contigs are "unknown", as conventional alignments find no similarity to known sequences. Hidden Markov models (HMM) exploit the positions of specific nucleotides in protein-encoding codons in various ...
Zurab Bzhalava, Emilie Hultin, Joakim Dillner   +2 more
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 ...
Mohammad Moniruzzaman, Mohammad Moniruzzaman, Eric R. Gann, Steven W. Wilhelm   +3 more
doaj   +1 more source

The analysis of translation-related gene set boosts debates around origin and evolution of mimiviruses. [PDF]

PLoS Genetics, 2017
The giant mimiviruses challenged the well-established concept of viruses, blurring the roots of the tree of life, mainly due to their genetic content.
Jônatas Santos Abrahão, Rodrigo Araújo, Philippe Colson, Bernard La Scola   +3 more
doaj   +1 more source

The giant mimivirus 1.2 Mb genome is elegantly organized into a 30-nm diameter helical protein shield

eLife, 2022
Mimivirus is the prototype of the Mimiviridae family of giant dsDNA viruses. Little is known about the organization of the 1.2 Mb genome inside the membrane-limited nucleoid filling the ~0.5 µm icosahedral capsids. Cryo-electron microscopy, cryo-electron
Alejandro Villalta, Alain Schmitt, Leandro F Estrozi, Emmanuelle RJ Quemin, Jean-Marie Alempic, Audrey Lartigue, Vojtěch Pražák, Lucid Belmudes, Daven Vasishtan, Agathe MG Colmant, Flora A Honoré, Yohann Couté, Kay Grünewald, Chantal Abergel   +13 more
doaj   +1 more source

Lateral gene exchanges shape the genomes of amoeba-resisting microorganisms. [PDF]

, 2012
Based on Darwin's concept of the tree of life, vertical inheritance was thought to be dominant, and mutations, deletions, and duplication were streaming the genomes of living organisms.
Bertelli, C., Greub, G.
core   +2 more sources

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

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 Abrahao, Jonatas Abrahao, Fabrizio Di Pinto, Anthony Levasseur, Bernard La Scola   +6 more
doaj   +1 more source

Marseilleviruses: An Update in 2021

Frontiers in Microbiology, 2021
The family Marseilleviridae was the second family of giant viruses that was described in 2013, after the family Mimiviridae. Marseillevirus marseillevirus, isolated in 2007 by coculture on Acanthamoeba polyphaga, is the prototype member of this family ...
Dehia Sahmi-Bounsiar, Dehia Sahmi-Bounsiar, Clara Rolland, Clara Rolland, Sarah Aherfi, Sarah Aherfi, Hadjer Boudjemaa, Hadjer Boudjemaa, Anthony Levasseur, Anthony Levasseur, Bernard La Scola, Bernard La Scola, Philippe Colson, Philippe Colson   +13 more
doaj   +1 more source