autographiviridae autographiviridae autographiviridae is a family of viruses in the order caudovirales. bacteria serve as natural hosts. there are 373 species in this family, assigned to 9 subfamilies and 133 genera. autographiviridae virus classification (unranked): virus realm: duplodnaviria kingdom: heunggongvirae phylum: uroviricota class: caudoviricetes order: caudovirales family: autographiviridae genera see text synonyms t7 supergroup history since the 1990s, the term "t7 supergroup" has been coined for the expanding group of bacteriophages related to coliphage t7, as members of the family podoviridae. enterobacteriaceae phages sp6 and k1-5 were the first to be considered as an estranged subgroup of the "t7 supergroup". pseudomonas phage phikmv also shared commonalities at the genome organizational level. as such, based on the available morphological and proteomic data, this clade of viruses was established as a subfamily of the family podoviridae. the subfamily was later raised to the level of family in 2019. etymology the name of this family, termed autographiviridae, refers to the “auto-graphein” or “self-transcribing” phages which encode their own (single subunit) rna polymerase, a common characteristic among its members. structure viruses in autographiviridae are non-enveloped, with icosahedral and head-tail geometries, and t=7 symmetry. the diameter is around 60 nm. genomes are linear, around 40-42kb in length. life cycle viral replication is cytoplasmic. dna templated transcription is the method of transcription. the virus exits the host cell by lysis, and holin/endolysin/spanin proteins. bacteria serve as the natural host. transmission routes are passive diffusion. taxonomy the following subfamilies are recognized: beijerinckvirinae colwellvirinae corkvirinae krylovirinae melnykvirinae molineuxvirinae okabevirinae slopekvirinae studiervirinae the following genera are unassigned to a subfamily: aegirvirus anchaingvirus aqualcavirus ashivirus atuphduovirus ayakvirus ayaqvirus banchanvirus bifseptvirus bonnellvirus cheungvirus chosvirus cuernavacavirus cyclitvirus ermolevavirus foturvirus foussvirus fussvirus gajwadongvirus gyeongsanvirus igirivirus jalkavirus jiaoyazivirus kafavirus kajamvirus kakivirus kalppathivirus kelmasvirus kembevirus krakvirus lauvirus limelightvirus lingvirus lirvirus lullwatervirus maculvirus napahaivirus nohivirus oinezvirus paadamvirus pagavirus pairvirus pedosvirus pekhitvirus pelagivirus percyvirus piedvirus podivirus pollyceevirus poseidonvirus powvirus pradovirus qadamvirus scottvirus sednavirus serkorvirus sieqvirus stompelvirus stopalavirus stopavirus stupnyavirus tangaroavirus tawavirus tiamatvirus tiilvirus tritonvirus voetvirus votkovvirus waewaevirus wuhanvirus (not to be confused with severe acute respiratory syndrome coronavirus 2)