Bacteria serve as natural hosts, with transmission achieved through passive diffusion.

[1][2][3] The following two species are assigned to the genus:[2] Muviruses are nonenveloped, with a head and tail.

The neck is knob-like, and the tail is contractile with a base plate and six short terminal fibers.

Once in the cell, the viral DNA is protected from degradation by the host nucleases.

The viral genome is copied 50–100 times in the host chromosome via replicative transposition.