Results 71 to 80 of about 1,877 (147)

Discovery and Further Studies on Giant Viruses at the IHU Mediterranee Infection That Modified the Perception of the Virosphere

open access: yesViruses, 2019
The history of giant viruses began in 2003 with the identification of Acanthamoeba polyphaga mimivirus. Since then, giant viruses of amoeba enlightened an unknown part of the viral world, and every discovery and characterization of a new giant virus ...
Clara Rolland   +20 more
doaj   +1 more source

Ultrastructural characterization of the giant volcano-like virus factory of Acanthamoeba polyphaga Mimivirus.

open access: yesPLoS ONE, 2007
Acanthamoeba polyphaga Mimivirus is a giant double-stranded DNA virus defining a new genus, the Mimiviridae, among the Nucleo-Cytoplasmic Large DNA Viruses (NCLDV).
Marie Suzan-Monti   +4 more
doaj   +1 more source

Ancestrality and Mosaicism of Giant Viruses Supporting the Definition of the Fourth TRUC of Microbes

open access: yesFrontiers in Microbiology, 2018
Giant viruses of amoebae were discovered in 2003. Since then, their diversity has greatly expanded. They were suggested to form a fourth branch of life, collectively named ‘TRUC’ (for “Things Resisting Uncompleted Classifications”) alongside Bacteria ...
Philippe Colson   +10 more
doaj   +1 more source

Giant Viruses—Big Surprises

open access: yesViruses, 2019
Viruses are the most prevalent infectious agents, populating almost every ecosystem on earth. Most viruses carry only a handful of genes supporting their replication and the production of capsids.
Nadav Brandes, Michal Linial
doaj   +1 more source

Atomic force microscopy investigation of the giant mimivirus

open access: yesVirology, 2010
Mimivirus was investigated by atomic force microscopy in its native state following serial degradation by lysozyme and bromelain. The 750-nm diameter virus is coated with a forest of glycosylated protein fibers of lengths about 140 nm with diameters 1.4 nm. Fibers are capped with distinctive ellipsoidal protein heads of estimated Mr=25 kDa. The surface
Kuznetsov, Yuri G   +5 more
openaire   +4 more sources

Stem-Loop RNA Hairpins in Giant Viruses: Invading rRNA-Like Repeats and a Template Free RNA

open access: yesFrontiers in Microbiology, 2018
We examine the hypothesis that de novo template-free RNAs still form spontaneously, as they did at the origins of life, invade modern genomes, contribute new genetic material.
Hervé Seligmann, Didier Raoult
doaj   +1 more source

Mimivirus-like Particles in Acanthamoebae from Sewage Sludge

open access: yesEmerging Infectious Diseases, 2011
To the Editor: Mimivirus is a giant, double-stranded DNA virus. Its 650-nm diameter and 1.2-Mb genome make it the largest known virus (1). In 2003, mimivirus was isolated from a water cooling tower in Bradford, UK, after a pneumonia outbreak and was reported to infect Acanthamoeba polyphaga amebae (2).
Gaze, WH   +3 more
openaire   +4 more sources

A Phylogenomic Study of Acanthamoeba polyphaga Draft Genome Sequences Suggests Genetic Exchanges With Giant Viruses

open access: yesFrontiers in Microbiology, 2018
Acanthamoeba are ubiquitous phagocytes predominant in soil and water which can ingest many microbes. Giant viruses of amoebae are listed among the Acanthamoeba-resisting microorganisms.
Nisrine Chelkha   +5 more
doaj   +1 more source

Recombinant expression of Mimivirus L725 ORFan gene product

open access: yesActa virologica, 2017
Mimivirus was the first discovered amoebal giant virus. The Mimivirus virions are covered by a dense layer of approximately 130 nm-long fibers, the length and shape of which diverge from those of other viruses. Here, we aimed at expressing the L725 protein to further confirm and study its role as a fiber-associated protein.
Sobhy, H.   +4 more
openaire   +4 more sources

Mimiviridae, Marseilleviridae, and virophages as emerging human pathogens causing healthcare-associated infections

open access: yesGMS Hygiene and Infection Control, 2014
[english] Aim: During the last decade it became obvious that viruses belonging to and families (order Megavirales), may be potential causative agents of pneumonia. Thus, we have performed a review of the association of , , and virophages with pneumonia,
Kutikhin, Anton G.   +2 more
doaj   +1 more source

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