Table 2 Taxonomic markers, zinc fingers in NC and frameshifts
From: Classification and characterization of human endogenous retroviruses; mosaic forms are common
HERV Class, and representative groups | Total Nr | Nr of zinc-finger motifs in NC | Frameshift Gag-Pro | Frameshift Pro-Pol | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
0 | 1 | 2 | −1 | 0 | +1 | −1 | 0 | +1 | ||
I (gamma- and epsilon-like, canonical and noncanonical) | 2341 | 400 | 1371 | 304 | 380 | 1128 | 295 | 413 | 669 | 363 |
Canonical HERVE | 41 | 6 | 19 | 0 | 6 | 28 | 3 | 9 | 10 | 17 |
Canonical HERVF(A-C) | 18 | 2 | 1 | 10 | 3 | 10 | 4 | 5 | 4 | 5 |
II (beta-like, canonical and noncanonical) | 598 | 213 | 49 | 273 | 149 | 111 | 75 | 136 | 145 | 76 |
Canonical HML2 | 19 | 4 | 1 | 11 | 6 | 2 | 5 | 10 | 1 | 2 |
III (spuma-like, canonical and noncanonical) | 216 | 193 | 3 | 0 | 12 | 16 | 9 | 43 | 60 | 31 |
Canonical HERVL | 86 | 78 | 1 | 0 | 6 | 7 | 1 | 19 | 25 | 18 |
Unc_Erranti-likea, noncanonical | 2 | 0 | 0 | 2 | ? | ? | ? | ? | ? | ? |