Ceduovirus
Ceduovirus is a genus of viruses in the class Caudoviricetes, unassigned to a family and order. Bacteria serve as the natural host, with transmission achieved through passive diffusion. There are 34 species in this genus.
Taxonomy
The following species are recognized:Ceduovirus bIBB14Ceduovirus bIBBA3Ceduovirus bIBBAm4Ceduovirus bIBBE1Ceduovirus bIBBL12Ceduovirus bIBBp64Ceduovirus bIL67Ceduovirus blBB94p4Ceduovirus c2Ceduovirus CHPC116Ceduovirus CHPC122Ceduovirus CHPC966Ceduovirus CHPC967Ceduovirus CHPC972Ceduovirus CHPC1020Ceduovirus CHPC1170Ceduovirus CHPC1182Ceduovirus CHPC1183Ceduovirus CHPC1242Ceduovirus cv05802Ceduovirus cv20R03MCeduovirus cv37203Ceduovirus cv50102Ceduovirus cv50504Ceduovirus cv5171FCeduovirus cv62402Ceduovirus cv62403Ceduovirus cv62606Ceduovirus D4410Ceduovirus D4412Ceduovirus LacS15Ceduovirus M5938Ceduovirus PCB1
Structure
Ceduoviruses are nonenveloped, with a head and tail. The prolate head is about 56 nm long and 41 nm wide and has a collar. The tail is cross-banded, is about 86-111 nm long, 8 nm wide, and has short tail fibers. Genomes are linear, around 22kb in length.
| Genus | Structure | Symmetry | Capsid | Genomic arrangement | Genomic segmentation |
| Ceduovirus | Head-Tail | T=7 | Non-enveloped | Linear | Monopartite |
Genome
Some species have been fully sequenced. They range between 22k and 23k nucleotides, with 37 to 39 proteins. Complete genomes are available
Life cycle
Viral replication is cytoplasmic. The virus attaches to the host cell's adhesion receptors using its terminal fibers, and viral exolysin degrades the cell wall enough to eject the viral DNA into the host cytoplasm via . Replication follows the DNA strand displacement, via replicative transposition model. DNA templated transcription is the method of transcription. Bacteria serve as the natural host. Transmission routes are passive diffusion.
| Genus | Host details | Tissue tropism | Entry details | Release details | Replication site | Assembly site | Transmission |
| Ceduovirus | Bacteria | - | Injection | Lysis | Cytoplasm | Cytoplasm | Passive diffusion |
History
According to ICTV's report, the genus C2likevirus was first accepted under the name c2-like phages, assigned only to family Siphoviridae. The whole family was moved to the newly created order Caudovirales in 1998, and the genus was renamed to c2-like viruses in ICTV's in 1999. In, the genus was renamed again, this time to C2likevirus. The genus was later renamed to Ceduovirus in 2018.