Ligamenvirales

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Ligamenvirales
Virus classification e
(unranked): Virus
Phylum: incertae sedis
Class: incertae sedis
Order: Ligamenvirales
Families

Ligamenvirales is an order of linear viruses that infect archaea of the kingdom Crenarchaeota and have double-stranded DNA genomes.[1] The order was established by David Prangishvili and M. Krupovic in 2012.

The name is derived from the Latin ligamen, meaning string or thread.

Taxonomy[edit]

There are two families in this order – Lipothrixviridae and Rudiviridae.

The virons are filamentous with a helical nucleocapsid. At either end are attached either fibers or more complex structures involved in host adhesion.

The major coat proteins of both lipothrixviruses and rudiviruses have an unusual four-helix bundle topology.[2] Viruses from the two families share up to ten genes.

The genome is non-segmented linear double stranded DNA.

References[edit]

  1. ^ Prangishvili D; Krupovic M (2012). "A new proposed taxon for double-stranded DNA viruses, the order Ligamenvirales". Arch Virol. 157 (4): 791–795. doi:10.1007/s00705-012-1229-7. PMID 22270758.
  2. ^ Goulet A, Blangy S, Redder P, Prangishvili D, Felisberto-Rodrigues C, Forterre P, Campanacci V, Cambillau C (2009) Acidianus filamentous virus 1 coat proteins display a helical fold spanning the filamentous archaeal viruses lineage. PNAS 106 (50) 21155–60