Genus: Tsarbombavirus

Genus: Tsarbombavirus

Distinguishing features

Members of this genus infect Bacillus cereus and Bacillus thuringiensis. The type species is Bacillus virus Tsarbomba. No terminal repeats have been reported for tsarbombavirus genomes. The genome of the exemplar isolate of the type species is 156 kbp, with 227 gene coding sequences as well as 18 encoded tRNAs.


See discussion under family description.

Genome organisation and replication 

See discussion under family description


Members of the genus infect Bacillus cereus and Bacillus thuringiensi.

Derivation of names 

Tsarbombavirus: derived from the name of the exemplar isolate, Bacillus phage TsarBomba, of the type species.

Species demarcation criteria

Members of the same species are more than 95% identical in genome nucleotide sequence, including the terminal repeat region. Phages with genomes that differ by more than 5% are assigned to different species.

Member species

Exemplar isolate of the species
SpeciesVirus nameIsolateAccession numberRefSeq numberAvailable sequenceVirus Abbrev.
Bacillus virus BCP78Bacillus phage BCP78JN797797NC_018860Complete genome
Bacillus virus BCP78Bacillus phage BCU4JN797798Complete genome
Bacillus virus TsarBombaBacillus phage TsarBombaKT224359NC_028890Complete genome

Virus names, the choice of exemplar isolates, and virus abbreviations, are not official ICTV designations.