The Number of Predicted ABC Transporters in the Complete Genomes
| Group | Substrate | Eco | Hin | Hpy | Bsu | Mge | Mpn | Bbu | Syn | Mja | Mth | Afu |
| 1-1,1-2 | sulfate, nitrate, etc. | 15 | 7 | 2 | 6 | 2 | 2 | 2 | 9 | 2 | 5 | |
| 1-3,1-4 | ? | 2 | 1 | 1 | 2 | |||||||
| 2 | simple sugar | 8 | 3 | 3 | 1 | 1 | 1 | 1 | ||||
| 3-1 | cell division? | 4 | 2 | 1 | 8 | 1 | 2 | 1 | 3 | |||
| 3-2 | ? | 1 | 1 | 1 | 1 | |||||||
| 3-3 | polar amino acids | 6 | 2 | 1 | 5 | 1 | ||||||
| 3-4 | phosphonate | 1 | ||||||||||
| 3-5 | branched chain amino acids | 1 | 2 | 1 | 4 | |||||||
| 3-7 | phosphate | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 1 | 1 | ||
| 4-1 | peptide | 7 | 3 | 2 | 3 | 1 | 1 | 1 | 1 | 1 | ||
| 5-1 | iron complex | 4 | 1 | 1 | 4 | 1 | 1 | 1 | 2 | 2 | ||
| 5-2 | manganese | 1 | 2 | 2 | 2 | 1 | 1 | |||||
| 5-3 | cobalt | 1 | 1 | 2 | 2 | 1 | 2 | |||||
| 6 | multidrug resistance | 3 | 4 | 2 | 8 | 1 | 1 | 7 | ||||
| 7,11 | export (ABC-2) | 3 | 1 | 6 | 4 | 1 | 3 | 4 |
[i] Taken from http://www.genome.ad.jp/kegg/ortholog/tab02010.html(as of June 17, 1998). (Bsu) Bacillus subtilis; (Bbu)Borrelia burgdorferi; (Mth) Methanobacterium thermoautotrophicum; (Afu) Archaeoglobus fulgidus.