Table 1. Overview of cytosolic glutathione transferase (GST) genes in 21 mammals.
| Subclass | Alpha (GSTA) | Mu (GSTM) | Theta (GSTT) | Pi (GSTP) | Zeta (GSTZ) | Omega (GSTO) | Sigma (HPGDS) | Total number of GSTs | Pseudogene proportion |
|---|---|---|---|---|---|---|---|---|---|
| Human | 12(7:5:0) | 5(0:5:0) | 3(0:3:0) | 1(0:1:0) | 1(0:1:0) | 2(0:2:0) | 1(0:1:0) | 25(7:18:0) | 0.28 |
| Mouse | 6(1:5:0) | 10(4:6:0) | 3(0:3:0) | 7(0:7:0) | 1(0:1:0) | 2(0:2:0) | 1(0:1:0) | 30(5:25:0) | 0.17 |
| Naked mole rat | 4(1:3:0) | 10(0:10:0) | 2(0:2:0) | 2(0:2:0) | 1(0:1:0) | 2(1:1:0) | 1(0:1:0) | 22(2:20:0) | 0.09 |
| Bottlenose dolphin | 3(1:0:2) | 5(3:1:1) | 2(1:1:0) | 3(1:0:2) | 1(0:0:1) | 2(0:1:1) | 1(0:1:0) | 17(6:4:7) | 0.35 |
| Killer whale | 3(1:2:0) | 5(4:1:0) | 2(0:2:0) | 3(1:2:0) | 1(0:1:0) | 2(0:2:0) | 1(0:1:0) | 17(6:11:0) | 0.35 |
| Yangtze finless porpoise | 3(1:2:0) | 5(4:1:0) | 2(1:1:0) | 3(1:0:2) | 1(0:0:1) | 2(0:2:0) | 1(0:1:0) | 17(7:7:3) | 0.41 |
| Yangtze river dolphin | 3(1:2:0) | 5(4:1:0) | 2(1:1:0) | 3(1:2:0) | 1(0:1:0) | 2(0:2:0) | 1(0:1:0) | 17(7:10:0) | 0.41 |
| Sperm whale | 3(1:2:0) | 5(4:1:0) | 2(0:1:1) | 3(1:2:0) | 1(0:1:0) | 2(0:2:0) | 1(0:1:0) | 17(6:10:1) | 0.35 |
| Minke whale | 3(1:2:0) | 5(3:1:1) | 2(1:1:0) | 3(1:2:0) | 1(0:1:0) | 2(0:1:1) | 1(0:1:0) | 17(6:9:2) | 0.35 |
| Bowhead whale | 2(0:2:0) | 5(3:1:1) | 2(1:1:0) | 3(1:0:2) | 1(0:0:1) | 2(0:2:0) | 1(0:1:0) | 16(5:7:4) | 0.31 |
| Cow | 6(2:4:0) | 8(2:6:0) | 2(0:2:0) | 2(0:2:0) | 1(0:1:0) | 3(0:3:0) | 1(0:1:0) | 23(4:19:0) | 0.17 |
| Tibetan yak | 6(1:5:0) | 6(0:6:0) | 3(0:3:0) | 2(0:2:0) | 1(0:1:0) | 3(0:3:0) | 1(0:1:0) | 22(1:21:0) | 0.05 |
| Sheep | 7(1:6:0) | 8(2:6:0) | 2(0:2:0) | 2(0:2:0) | 1(0:1:0) | 4(0:4:0) | 1(0:1:0) | 25(3:22:0) | 0.12 |
| Tibetan antelope | 6(1:5:0) | 6(0:6:0) | 2(0:2:0) | 2(0:2:0) | 1(0:1:0) | 3(0:3:0) | 1(0:1:0) | 21(1:20:0) | 0.05 |
| Weddell seal | 4(1:2:1) | 5(2:3:0) | 2(0:2:0) | 7(1:4:2) | 1(0:1:0) | 2(0:2:0) | 1(0:1:0) | 22(4:15:3) | 0.18 |
| Pacific walrus | 5(1:4:0) | 8(2:6:0) | 2(0:2:0) | 6(1:5:0) | 1(0:1:0) | 2(0:2:0) | 1(0:1:0) | 25(4:21:0) | 0.16 |
| Dog | 6(1:5:0) | 5(3:2:0) | 2(0:2:0) | 12(6:6:0) | 1(0:1:0) | 2(0:2:0) | 1(0:1:0) | 29(10:19:0) | 0.34 |
| Horse | 10(1:9:0) | 6(2:4:0) | 2(0:2:0) | 2(0:2:0) | 1(0:1:0) | 2(0:2:0) | 1(0:1:0) | 24(3:21:0) | 0.13 |
| Microbat | 6(0:6:0) | 5(1:3:1) | 4(0:4:0) | 6(5:1:0) | 1(0:1:0) | 2(0:2:0) | 1(0:1:0) | 25(6:18:1) | 0.24 |
| Florida manatee | 4(0:4:0) | 8(0:8:0) | 2(0:2:0) | 1(0:1:0) | 1(0:1:0) | 2(0:2:0) | 1(0:1:0) | 19(0:19:0) | 0.00 |
| Elephant | 3(0:3:0) | 8(0:8:0) | 2(0:1:1) | 1(0:1:0) | 1(0:1:0) | 2(0:2:0) | 1(0:1:0) | 18(0:17:1) | 0.00 |
The number outside brackets is the number of genes in a subclass, while the numbers in the brackets, separated by a colon, indicate the number of pseudogenes, intact gene, and partial genes. The orders of cetacean are shadowed.