Φ29 phage

Bacillus phage phi29
Virus classification
Group:	Group I (dsDNA)
Order:	Caudovirales
Family:	Podoviridae
Subfamily:	Picovirinae
Genus:	Phi29likevirus
Species:	Bacillus phage phi29

Bacillus phage phi29 (Φ29 phage) belongs to a family of related Bacteriophages which includes, in addition to Φ29, phages PZA, Φ15, BS32, B103, M2Y (M2), Nf and GA-1. These phages, which form part of the Podoviridae family, are the smallest Bacillus phages isolated to date and are among the smallest known dsDNA phages.

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Wikipedia