DNA virus Totally Explained

Everything about Dna Virus totally explained

A DNA virus is a virus that has DNA as its genetic material and replicates using a DNA-dependent DNA polymerase. The nucleic acid is usually double-stranded DNA (dsDNA) but may also be single-stranded DNA (ssDNA). DNA viruses belong to either Group I or Group II of the Baltimore classification system for viruses. Single-stranded DNA is usually expanded to double-stranded in infected cells. Although Group VII viruses such as hepatitis B contain a DNA genome, they're not considered DNA viruses according to the Baltimore classification, but rather reverse transcribing viruses because they replicate through an RNA intermediate.

Recent taxonomic proposals by the Herpesviridae Study Group

Herpes viruses are double stranded DNA viruses assigned to Group I. The Herpesviridae Study Group has proposed that herpes viruses be assigned to a newly defined order, Herpesvirales. They also propose that the currently unassigned family Herpesviridae be reassigned to the new herpes order. In addition, they propose that the families Alloherpesviridae and Malacoherpesviridae also be assigned to the new order.

Group I - dsDNA viruses

Order Caudovirales
- Family Myoviridae - includes Enterobacteria phage T4
- Family Podoviridae
- Family Siphoviridae - includes Enterobacteria phage λ
Order Herpesviridae
- Family Alloherpesviridae
- Family Herpesviridae - includes human herpesviruses, Varicella Zoster virus
- Family Malacoherpesviridae
Unassigned families
- Family Ascoviridae
- Family Adenoviridae
- Family Asfarviridae - includes African swine fever virus
- Family Baculoviridae
- Family Coccolithoviridae
- Family Corticoviridae
- Family Fuselloviridae
- Family Guttaviridae
- Family Iridoviridae
- Family Lipothrixviridae
- Family Nimaviridae
- Family Papillomaviridae
- Family Phycodnaviridae
- Family Plasmaviridae
- Family Polyomaviridae - includes Simian virus 40, JC virus
- Family Poxviridae - includes Cowpox virus, smallpox
- Family Rudiviridae
- Family Tectiviridae
Unassigned genera
- Mimivirus

Group II - ssDNA viruses

Unassigned bacteriophage families

Family Inoviridae
Family Microviridae

Unassigned families

Family Geminiviridae
Family Circoviridae
Family Nanoviridae
Family Parvoviridae - includes Parvovirus B19

Unassigned genera

Anellovirus

Further Information

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