is a virus
which has a genome
consisting of RNA
. It relies on reverse transcriptase
to perform a kind of reverse transcription[?]
of its genome from RNA
for insertion by integrase
into the host's genome. The virus itself is just a storage form for its RNA; the reverse transcription takes place in the host's cytosol
. A retrovirus' genome integrated into the host's genome is called a provirus
The retrovirus genome contains at least three genes:
- gag codes for core and structural proteins of the virus.
- pol codes for reverse transcriptase.
- env codes for the virus hull proteins.
There are three known retrovirus categories :
All four identified human
1&2) attack CD4 cells[?]
Another feature common to all retrovirises is a lipid envelope surrounding their capsid. It is essential for their function. This explains why retroviruses can be killed by just washing hands.
- See also: HIV
- Retroviruses (http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/R/Retroviruses)
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