Table 1.
Human ABC gene subfamilies
| Subfamily name | Aliases | Number of genes | Number of pseudogenes |
|---|---|---|---|
| ABCA | ABC1 | 12 | 5 |
| ABCB | MDR | 11 | 4 |
| ABCC | MRP | 13 | 2 |
| ABCD | ALD | 4 | 4 |
| ABCE | OABP | 1 | 2 |
| ABCF | GGN20 | 3 | 2 |
| ABCG | White | 5 | 2 |
| Total | 49 | 21 | |
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