From: Classification and characterization of human endogenous retroviruses; mosaic forms are common
HERV Class, and representative groups | Nr | dUTPase in Pro | dUTPase in Pol | GPatch in Pro | Chromodomain and/or GPY/F in C terminus of Pol | Nucleotide biases | ||
---|---|---|---|---|---|---|---|---|
A > 31 % | G < 19 % | T > 31 % | ||||||
I (gamma- and epsilon-like, canonical and noncanonical) | 2341 | 1 | 1 | 2 | 522 | 290 | 26 | 56 |
Canonical HERVE | 41 | 0 | 0 | 0 | 21 | 1 | 0 | 0 |
Canonical HERVF(A-C) | 18 | 0 | 0 | 0 | 5 | 0 | 0 | 0 |
II (beta-like, canonical and noncanonical) | 598 | 395 | 0 | 110 | 16 (14 HML6) | 179 | 11 | 25 |
Canonical HML2 | 19 | 14 | 0 | 11 | 0 | 15 | 0 | 0 |
III (spuma-like, canonical and noncanonical) | 216 | 0 | 18 | 2 | 39 | 11 | 6 | 7 |
Canonical HERVL | 86 | 10 | 1 | 1 | 23 | 0 | 0 | 0 |
Unc_Erranti-like, noncanonical | 2 | 0 | 0 | 2 | 0 | 1 | 1 | 1 |