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Gene counts of biotransformative genes in the humans, sea urchin, and sea anemone genomes.
| Classification | Gene | Human | Urchin | Anemone |
|---|---|---|---|---|
| Oxidative | CYP Clan 2 | 21 | 85 | 39 |
| CYP Clan 3 | 5 | 13 | 20 | |
| CYP Clan 4 | 12 | 10 | 3 | |
| FMO | 6 | 16 | 6 | |
| ALDH | 19 | 20 | 21 | |
| Conjugative | GST | 21 | 38 | 18 |
| MGST | 3 | 12 | 5 | |
| SULT | 13 | 73 | 22 | |
| UGT | 13a | 50 | 9 | |
| NAT | 2 | 1 | 0 | |
| Reductive | AKR-like | 8 | 10 | 12 |
| EPHX | 2 | 5 | 1 | |
| NOQ1 | 2 | 0 | 0 |
Not applicable – see text.
Not including multiple first exon expression in UGT1.
