| Subviral Agent: | Satellite/Viroid |
| Nucleic Acid: | Negative Stranded ssRNA |
| General Host: | Vertebrates |
| Genus | 82.022.0.01. Deltavirus |
| Type Species | 82.022.0.01.001. Hepatitis delta virus (HDV) |
List of Species in the Genus
The virus codes, their names and alternative
names ( ), genomic sequence accession numbers [ ] and assigned
abbreviations ( ) are:
Species, their serotypes, strains and isolates
| 82.022.0.01.001. | Hepatitis delta virus | (HDV) | ||
| 82.022.0.01.001.00.001.001. | HDV genotype 1 (USA, Europe, China) | |||
| 82.022.0.01.001.00.001.002. | HDV genotype 2 (Japan) | [X60193] | ||
| 82.022.0.01.001.00.001.003. | HDV genotype 3 (South America) |
Tentative Species in the Genus
None reported.
Similarity with Other Taxa
Several features of HDV (genome structure,
RNA-RNA transcription using RNA polymerase II, and autocatalytic RNA sites) are
similar to properties of viroids. However, unlike viroids, HDV possesses a
larger genome, encodes a functional protein, and requires a specific
Hepadnavirus helper function.
HDV also possesses some features in common with ssRNA satellites of plants, including B type mRNA satellites and D type circular RNA satellites ("virusoids"), and also (in terms of the satellite-helper relationship) with ssRNA satellite viruses as with chronic bee-paralysis virus associated satellite and tobacco necrosis virus satellite.
However, on the basis of genome size and structure, mode of replication, none of the above example warrant inclusion in a distinct family together with HDV.
Derivation of Name
Delta: from Greek letter Î", D .
Contributed by
Burrell, C, MacNaughton, T.B., Netter, H.J., and
Taylor, J.M.
