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Characteristics of Mimivirus and CcBV and their genomes |
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| Feature |
Mimivirus |
CcBV (in caterpillar host) |
CcBV (in wasp host) |
|
|
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| Genome size (base-pairs) |
1,181,404 |
567,670 |
NK |
| Genome structure |
Linear |
30 closed circles |
Provirus (linear)* |
| G + C composition (%) |
28.0 |
33.95 |
NK |
| Coding density (%) |
90.5 |
26.9 |
NK |
| Number of genes |
1,262 |
156 |
NK |
| Genes containing introns |
4† |
107 |
NK |
| Genes with assigned function |
298 |
42 |
NK |
| Obligate intracellular parasite |
Yes |
Yes |
No‡ |
| Viral DNA replication in host |
Yes |
No |
No* |
| Virion assembly in host |
Yes |
No |
Yes |
| Transmission via virion |
Yes |
No |
No* |
| Viral gene expression dependent on host cellular machinery |
Yes |
Yes |
Yes |
|
NK, not known; *circles are produced from amplified proviral DNA in female wasps at the time of egg laying, resulting in vertical transmission; †genes contain self-splicing introns; ‡CcBV is not pathogenic to the wasp host and exhibits a mutualistic association with it (see text for details). | |||
Desjardins et al. Genome Biology 2005 6:212 doi:10.1186/gb-2005-6-3-212 |
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