A prophage is a phage genome inserted as part of the linear structure of the DNA chromosome of a bacterium. A temperate phage integrated into the host chromosome or existing as an extrachromosomal plasmid. This is a latent form of a bacteriophage in which the viral genes are incorporated into the bacterial chromosomes without causing disruption of the bacterial cell.

Upon detection of host cell damage, the prophage is excised from the bacterial chromosome in a process called prophage induction. After induction, viral replication begins via the lytic cycle.

See also

• WikiProject Viruses

Virology

Prophage | Probactériophage