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Yuavirus
''Yuavirus'' is a genus of viruses in the family ''Siphoviridae'', unassigned to a sub-family. Bacteria serve as the natural host, with transmission achieved through passive diffusion. There are six species in this genus. Taxonomy The following species are recognized: * ''Alphaproteobacteria virus phiJl001'' * ''Pseudomonas virus LKO4'' * ''Pseudomonas virus M6'' * ''Pseudomonas virus MP1412'' * ''Pseudomonas virus PAE1'' * ''Pseudomonas virus Yua'' Structure Yuaviruses are viral envelope, nonenveloped, with a head and tail. The head is a prolate spheroid about 72 nm by 51 nm. The tail is about 145 nm long. Genome All species have been fully sequenced. They range between 58-64k nucleotides, with 77-90 proteins. Life cycle The virus attaches to the host cell using its terminal fibers, and ejects the viral DNA into the host periplasm. The DNA genome is circularized or integrate into the host's chromosome before transcription and translation. Once the viral genes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Siphoviridae
''Siphoviridae'' is a family of double-stranded DNA viruses in the order ''Caudovirales''. Bacteria and archaea serve as natural hosts. There are 1,166 species in this family, assigned to 366 genera and 22 subfamilies. The characteristic structural features of this family are a nonenveloped head and noncontractile tail. Structure Viruses in ''Siphoviridae'' are non-enveloped, with icosahedral and head-tail geometries (morphotype B1) or a prolate capsid (morphotype B2), and T=7 symmetry. The diameter is around 60 nm. Members of this family are also characterized by their filamentous, cross-banded, noncontractile tails, usually with short terminal and subterminal fibers. Genomes are double stranded and linear, around 50 kb in length, containing about 70 genes. The guanine/cytosine content is usually around 52%. Life cycle Viral replication is cytoplasmic. Entry into the host cell is achieved by adsorption into the host cell. Replication follows the replicative transposition ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
