Group Group I (dsDNA) | Rank Family | |
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Marseilleviridae is a family of double stranded DNA viruses. Amoeba serve as natural hosts. There are currently four species in this family, divided among 1 genera. It is a member of the nucleocytoplasmic large DNA viruses clade.
Contents
Taxonomy
Group: dsDNA
Related Viruses
Additional species have since been recognized. The first member of this family recognized has been named Acanthamoeba polyphaga marseillevirus. A second member is Acanthamoeba castellanii lausannevirus. Two additional viruses have been isolated but have yet to be named. Another member of this family has been isolated from blood donors. An isolate from insects—Insectomime virus—has also been reported.
The viruses appear to fall into at least 3 lineages: (1) Marseillevirus and Cannes8virus (2) Insectomime and Tunisvirus and (3) Lausannevirus. A sixth potential member of this family—Melbournevirus—appears to be related to the Marseillevirus/Cannes8virus clade.
A seventh virus—Brazilian Marseillevirus—has been reported. This virus appears to belong to a fourth lineage of virus in this family.
Another virus—Tokyovirus—has also been reported.
Structure
Viruses in Marseilleviridae have icosahedral geometries. The diameter is around 250 nm. Genomes are circular, around 372kb in length. The genome has 457 open reading frames.
Life Cycle
Dna templated transcription is the method of transcription. Amoeba serve as the natural host.
History
One of the first members of this family was described in 2009. Other members described around then (2007) and since then have been documented.