Bacteriophage phi X 174

**Definition:** The type species of the genus MICROVIRUS. A prototype of the small virulent DNA coliphages, it is composed of a single strand of supercoiled circular DNA, which on infection, is converted to a double-stranded replicative form by a host enzyme.

**Tree numbers:** - B04.123.205.320 - B04.123.470.500.320 - B04.280.470.500.320

**Synonyms:** - Phage phi X174 - Enterobacteria phage phi X 174 - Coliphage phi X 174 - Phage phi X 174 - phi X 174 Phage