| Species | RefIntense Num | Refseq Num | Source |
|---|---|---|---|
| Anaplasma marginale | 1 | 20 | HMP |
| Anaplasma phagocytophilum | 1 | 27 | HMP |
| Aneurinibacillus aneurinilyticus | 1 | 3 | MGYG |
| Anoxybacillus flavithermus | 1 | 30 | HMP |
| Aquifex aeolicus | 1 | 1 | HMP |
| Arabiibacter massiliensis | 1 | 1 | MGYG |
| Arcanobacterium haemolyticum | 1 | 5 | HMP |
| Arcanobacterium urinimassiliense | 1 | 1 | MGYG |
| Arcobacter nitrofigilis | 1 | 1 | HMP |
| Aromatoleum aromaticum | 1 | 3 | HMP |