Group Group I (dsDNA) Family Myoviridae Genus Twortlikevirus | Order Caudovirales Subfamily Spounavirinae Rank Species | |
Similar Myoviridae, Siphoviridae, Podoviridae, Caudovirales | ||
Staphylococcus phage G1 is a virus of the family Myoviridae, genus Twortlikevirus.
As a member of the group I of the Baltimore classification, Staphylococcus phage G1 is a dsDNA viruses. All the Myoviridae family members share a nonenveloped morphology consisting of a head and a tail separated by a neck. Its genome is linear. The propagation of the virions includes the attaching to a host cell (a bacterium, as Staphylococcus phage G1 is a bacteriophage) and the injection of the double stranded DNA; the host transcribes and translates it to manufacture new particles. To replicate its genetic content requires host cell DNA polymerases and, hence, the process is highly dependent on the cell cycle.
The phage contains a genome of 138,715 base pairs with a 30.4% of GC content and 214 predicted genes; this means that the 88.5% of the DNA is coding open reading frames, and therefore the gene density (the number of genes per kilobase) is 1.54.