Ligamenvirales

The Ligamenvirales represent an order of viruses whose hosts are thermophilic bacteria and archaea of the Crenarchaeota department. The order was created from the merger of virus families Lipothrixviridae and Rudiviridae, because a common evolutionary precursor can be accepted by an expanded sequence analysis, although there are differences in the structure of the virions. Thus, the viruses of Lipothrixviridae are surrounded by a viral envelope Rudiviridae are unclothed. However, both families represent viruses with a linear, non- segmented double-stranded DNA as a genome, capsid their respective shows a helical symmetry and possess similarities regarding the host range and replication strategies. Both families have in common ( depending on the different genres ) to ten genes. The folding structure of the capsid proteins of both families is an unusual four-fold helix.

Virions of filamentous Ligamenvirales are at both ends and having hair-like structures, which are associated with the host specificity and entry into the host cell. From this morphology is the name of the order is derived (Latin ligamen: band, ankle).

System

• Order Ligamenvirales

• Family Lipothrixviridae
• Family Rudiviridae

Swell

• ICTV document to the new order 2011.008a - cB.A.v2.Ligamenvirales.pdf
• D. Prangishvili, M. Krupovic: A new Proposed taxon for double -stranded DNA viruses, the order " Ligamenvirales ". Arch Virol. (2012) 157 (4): pp. 791-795, PMID 22270758
• A. Goulet, S. Blangy et al. Acidianus filamentous virus 1 coat proteins display a helical fold spanning the filamentous archaeal viruses lineage. PNAS (2009) 15, 106 (50 ): pp. 21155-60 PMID 19,934,032

• Virus -order