The Number of Bacteria-type ABC Transporter Components
| Organism | Total number of ABC transporter components | Number of fused components[i] | Number of isolated components[ii] | ||||
| membrane component | ATP-binding component | substrate binding component | fused component | ||||
| M. jannaschii | 39 | 1 | 5 | ||||
| M. thermoautotrophicum | 36 | 6 | |||||
| A. fulgidus | 97 | 1 | 7 | ||||
| P. horikoshii | 85 | 2 | 1 | 6 | 3 | ||
| E. coli | 242 | 9 | 6 | 17 | 4 | ||
| H. influenzae | 105 | 8 | 2 | 5 | 3 | 3 | |
| H. pylori | 48 | 4 | 1 | 6 | 3 | 3 | |
| B. subtilis | 207 | 12 | 1 | 13 | 9 | 4 | |
| M. genitalium | 34 | 3 | 2 | 1 | |||
| M. pneumoniae | 35 | 3 | 3 | 1 | |||
| M. tuberculosis | 126 | 10 | 1 | 8 | 6 | 3 | |
| B. burgdorferi | 44 | 3 | 2 | ||||
| T. pallidum | 50 | 7 | 3 | ||||
| Synechocystissp. | 139 | 11 | 8 | 17 | 16 | 10 | |
| A. aeolicus | 35 | 2 | 6 | 5 | 4 | 1 | |
| S. cerevisiae | 38 | 23 | 7 | 7 | 22 | ||
[i] A fused component consists of membrane and ATP-binding components in most cases.
[ii] A component is isolated when there is no other component within five gene positions on both sides.