Finnlakeviridae

Finnlakeviridae is a family of bacterial viruses that is the sole representative of its own class, Ainoaviricetes (from "ainoa", the Finnish word for "single" + -viricetes). The family contains a single genus, Finnlakevirus, which contains a single species, Finnlakevirus FLiP.^[1][2][3] This virus was isolated in 2010, with its gram-negative host Flavobacterium, from Lake Jyväsjärvi, a boreal freshwater habitat in Central Finland, and is the first described single-stranded DNA virus with an internal membrane.^[2]

Genome organization of Flavobacterium phage FLiP.

Finnlakeviridae
Virus classification
(unranked):	Virus
Realm:	Varidnaviria
Kingdom:	Abadenavirae
Phylum:	Produgelaviricota
Class:	Ainoaviricetes
Order:	Lautamovirales
Family:	Finnlakeviridae
Subtaxa
Genus: Finnlakevirus Species: Finnlakevirus FLiP

Cryo-electron microscopic reconstruction of the Flavobacterium phage FLiP virion

The genome is circular single-stranded DNA of about 9200 nucleotides in length.^[2]