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Podoviridae
Podoviridae was a family of bacteriophage in the order '' Caudovirales'' often associated with T-7 like phages. The family and order '' Caudovirales'' have now been abolished, with the term podovirus now used to refer to the morphology of viruses in this former family. There were 130 species in this family, assigned to 3 subfamilies and 52 genera. This family was characterized by having very short, noncontractile tails. Many former phages in the former family Podoviriade are now classified in the '' Autographiviridae'' Structure Viruses in the former family ''Podoviridae'' are non-enveloped, with icosahedral and head-tail geometries. The diameter is around 60 nm, and consists of 72 capsomers. The head protein has a molecular mass of ~38 kilodaltons and is present in 460 copies per virion. There are 9 structural proteins. The tail is non-contractile and has 6 short subterminal fibers. It is thick and rod-shaped and built of stacked disks. The maximum length is ~17 nm. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Autographiviridae
''Autographivirales'' is an Order (biology), order of viruses in the class ''Caudoviricetes''. Bacteria serve as natural hosts. The order has 4 families, 2 subfamilies unassigned to a family, and a large number of genera unassigned to a family. History Since the 1990s, the term "T7 supergroup" has been coined for the expanding group of bacteriophages related to Enterobacteria phage T7, 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. In 2025, the family ''Autographiviridae'' was elevated to the rank of order under the name ''Autographivirales''. Applicatio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Caudovirales
''Caudoviricetes'' is a class of viruses known as tailed viruses and head-tail viruses (''cauda'' is Latin for "tail"). It is the sole representative of its own phylum, ''Uroviricota'' (from ''ouros'' (ουρος), a Greek word for "tailed" + -viricota). Under the Baltimore classification scheme, the ''Caudoviricetes'' are group I viruses as they have double stranded DNA (dsDNA) genomes, which can be anywhere from 18,000 base pairs to 500,000 base pairs in length. The virus particles have a distinct shape; each virion has an icosahedral head that contains the viral genome, and is attached to a flexible tail by a connector protein. The order encompasses a wide range of viruses, many containing genes of similar nucleotide sequence and function. However, some tailed bacteriophage genomes can vary quite significantly in nucleotide sequence, even among the same genus. Due to their characteristic structure and possession of potentially homologous genes, it is believed these viruse ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Enquatrovirus
''Enquatrovirus'' is a genus of bacteriophages in the subfamily '' Enquatrovirinae'', family '' Schitoviridae''. Bacteria serve as natural hosts. There is only one species in this genus: ''Enquatrovirus N4''. ''Enquatrovirus N4'' was originally isolated from sewers in Genoa, Italy and infects ''Escherichia coli'' K-12. Recently, a number of genetically related phages were isolated, infecting '' Silicibacter'' and '' Sulfitobacter'' (DSS3ɸ2 and EE36ɸ1) as well as a number of ''Pseudomonas'' phages (LUZ7, LIT1 and PEV2) Structure The virus's virion have icosahedral (T=9) heads ~70 nm and short tails (10 nm), and contain short fibers originating from the junction between the head and tail. All the phages of this genus are strictly virulent and contain a linear dsDNA genome (with terminal repeats) in the range of 70-75kb. Life cycle Viral replication is cytoplasmic. Entry into the host cell is achieved by adsorption into the host cell. Dna templated transcription is the me ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bruynoghevirus
''Bruynoghevirus'' is a genus of viruses in the order ''Caudovirales''. Bacteria serve as natural hosts. There are seven species in this genus. Taxonomy The following species are recognized: * '' Pseudomonas virus Ab22'' * '' Pseudomonas virus CHU'' * '' Pseudomonas virus LUZ24'' * '' Pseudomonas virus PAA2'' * '' Pseudomonas virus PaP3'' * '' Pseudomonas virus PaP4'' * '' Pseudomonas virus TL'' Structure Viruses in ''Bruynoghevirus'' are non-enveloped, with an icosahedral In geometry, an icosahedron ( or ) is a polyhedron with 20 faces. The name comes . The plural can be either "icosahedra" () or "icosahedrons". There are infinitely many non- similar shapes of icosahedra, some of them being more symmetrical tha ... head (63 nm) and a short tail (12x8 nm). Although these phages produce small and turbid plaques, all attempts to isolate stable lysogenic '' P. aeruginosa'' clones failed. In addition, their genome (around 45kb) does not encode obvious genes indicative of l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
