thumb|Reconstruction of Saccharomyces cerevisiae Ty1 (genus Pseudovirus) virion with its building blocks.
Pseudoviridae is a family of viruses, which includes three genera.
The family includes the following genera:
- Hemivirus
- Pseudovirus
- Sirevirus
Further Pseudoviridae species not classified into a genus are:
- Penicillium camemberti virus – GP1
- Phaseolus vulgaris Tpv2-6 virus
Genome
thumb|Genome map of Saccharomyces cerevisiae Ty1 virus
The genome of viruses from this family is unsegmented, -RT, positive-sense, single-stranded RNA and is 4200–9700 nucleotides long. The genome encodes structural proteins and non-structural proteins which codes for an RNA-dependent DNA polymerase (reverse transcriptase), replicase, with the reverse transcriptase for the reverse transcription step during replication.
Structure
The viral capsid is unenveloped and looks roughly spherical. The capsid is round with icosahedral symmetry with triangulation number (T) = 3 and 4. It is also isometric to quasi-isometric and has a diameter of 30–50 nm. LTR-retrotransposons are poorly characterized and lipids have not reported.
Replication
The genome integrates into the host genome and gets transcribed by host cell enzymes such as eukaryotic nuclear RNA polymerase II. Genome replication takes place in the host cytoplasm, or the nucleus and assembly can occur in the cytoplasm, or in the nucleus.