TABLE 1.
Families of ssDNA viruses associated with eukaryotic hostsa
| Family | Hosts | Virion diam (nm) | Genome topology | Genome size (kb) | No. of ORFs | Replication proteinb |
|---|---|---|---|---|---|---|
| Anelloviridae | Animals | 30–32 | Circular | 2–4 | 2–4 | Rep |
| Bidnaviridae | Animals, insects | 20–24 | Linear | 6–6.5 per segment (2 segments) | 6 | pPolB |
| Parvoviridae | Animals, insects | 23–28 | Linear | 4–6.3 | 3–4 | HUH-Rep |
| Bacilladnaviridae | Algae (diatoms) | 33–38 | Circular | 5.5–6 | 4 | HUH-Rep |
| Circoviridae | Animals | 15–25 | Circular | 1.7–2.1 | 2 | HUH-Rep |
| Geminiviridae | Plants | 22 × 38 | Circular | 2.5–3 per segment (1–2 segments) | 4–8 | HUH-Rep |
| Genomoviridae | Fungi, insects | 20–22 | Circular | 2–2.4 | 2 | HUH-Rep |
| Nanoviridae | Plants | 17–20 | Circular | 0.98–1.1 per segment (6–9 segments) | 5–8 | HUH-Rep |
| Redondoviridae | ? | ? | Circular | 3.0–3.1 | 3 | HUH-Rep |
| Smacoviridae | ? | ? | Circular | 2.3–2.9 | 2 | HUH-Rep |
a
Families unified into the phylum Cressdnaviricota are in boldface type. ORFs, open reading frames.
b
HUH-Rep, Rep of the HUH endonuclease superfamily; pPolB, protein-primed family B DNA polymerase.