From: Retroviral Taxonomy, Protein Structures, Sequences, and Genetic Maps
Copyright © 1997, Cold Spring Harbor Laboratory Press.
NCBI Bookshelf. A service of the National Library of Medicine, National Institutes of Health.
Coffin JM, Hughes SH, Varmus HE, editors. Retroviruses. Cold Spring Harbor (NY): Cold Spring Harbor Laboratory Press; 1997.
Table 2Sizes of Retroviral LTR Components (U3-R-U5) and Genomes
| Retrovirus | U3 | R | U5 | Genome (R to R) |
|---|---|---|---|---|
| Type B | ||||
| MMTV | 1197 | 15 | 120 | 8,588 |
| Avian type C | ||||
| RSV | 233 | 21 | 80 | 9,312 |
| ALV | 229 | 21 | 80 | 7,286 |
| Mammalian type C | ||||
| MLV | 447 | 68 | 75 | 8,332 |
| Type D | ||||
| M-PMVa | 225 | 25 | 95 | 7,835 |
| SRV-1a | 225 | 25 | 96 | 7,848 |
| HTLV/BLV | ||||
| HTLV-1 | 353 | 228 | 221 | 8,528 |
| BLV | 211 | 229 | 93 | 8,418 |
| Lentiviruses | ||||
| HIV-1 | 454 | 98 | 84 | 9,181 |
| HIV-2 | 457 | 174 | 129 | 9,671 |
| Spumaviruses | ||||
| HFV | 777 (914)b | 191 | 155 | 11,159 |
| SFV-1 | 1,421 | 183 | 154 | 11,669 |
| SFVcpz | 1,294 | 170 | 155 | 11,521 |
| Fish | ||||
| WDSV | 440 | 77 | 73 | 12,195 |
| Fly | ||||
| Gypsy | 191 | 53 | 238 | 7,040 |
- a
The M-PMV and SRV-1 cap site and potential poly(A) addition sites are the current best estimates. The lengths are approximate.
- b
The 3′LTR U3 region of HFV contains a 137-nucleotide insertion at position 507 of the 5′LTR U3 region.
- Table 2, Sizes of Retroviral LTR Components (U3-R-U5) and Genomes - RetrovirusesTable 2, Sizes of Retroviral LTR Components (U3-R-U5) and Genomes - Retroviruses
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