ICTV Virus Taxonomy Profile: Finnlakeviridae
Sari Mäntynen, Elina Laanto, Lotta‐Riina Sundberg, Minna M. Poranen, Hanna M. Oksanen
Abstract
Finnlakeviridae is a family of icosahedral, internal membrane-containing bacterial viruses with circular, single-stranded DNA genomes. The family includes the genus, Finnlakevirus , with the species, Flavobacterium virus FLiP . Flavobacterium phage FLiP was isolated with its Gram-negative host bacterium from a boreal freshwater habitat in Central Finland in 2010. It is the first described single-stranded DNA virus with an internal membrane and shares minimal sequence similarity with other known viruses. The virion organization (pseudo T =21 dextro ) and major capsid protein fold (double-β-barrel) resemble those of Pseudoalteromonas phage PM2 (family Corticoviridae ), which has a double-stranded DNA genome. A similar major capsid protein fold is also found in other double-stranded DNA viruses in the kingdom Bamfordvirae . This is a summary of the International Committee on Taxonomy of Viruses (ICTV) report on the family Finnlakeviridae , which is available at ictv.global/report/finnlakeviridae .