Bacilladnaviridae is a family of single-stranded DNA viruses that primarily infect diatoms.

Characteristics

Genome map of species Chaetoceros protobacilladnavirus 2 of family Bacilladnaviridae

Similar to other eukaryotic ssDNA viruses, bacilladnaviruses are likely to replicate their genomes by the rolling-circle mechanism, initiated by the virus-encoded endonuclease (Rep). However, the latter protein of bacilladnaviruses displays unique conserved motifs and in phylogenetic trees forms a monophyletic clade separated from other groups of ssDNA viruses. The capsid protein of bacilladnaviruses has the jelly-roll fold and is most closely related to the corresponding proteins from members of the family Nodaviridae, which have ssRNA genomes.

Taxonomy

The following genera are recognized:

  • Aberdnavirus
  • Diatodnavirus
  • Keisodnavirus
  • Kieseladnavirus
  • Protobacilladnavirus
  • Puahadnavirus
  • Seawadnavirus

External links

  • Yuji Tomaru, Kensuke Toyoda, Hidekazu Suzuki, Tamotsu Nagumo, Kei Kimura & Yoshitake Takao: . In: Nature Sci Rep 3, 3337. 26 November 2013. doi:10.1038/srep03337. Proposal of new species "Chaetoceros setoensis DNA virus" (CsetDNAV), ssDNA circular.