Genes Deleted in Strains Δ20-1 and Δ20-4
| Deletion | B-Number[i] | Map Position[ii] | Estimated Size[iii](bp) | |
| Δ20-1 | Δ20-4 | |||
| 1.1 | b0116 | 2.8 | 1,424 | |
| 1.2 | 4.1 | b0288–b0315 | 6.5–7.2 | 29,606 |
| 1.3 | b1188–b1197 | 26.6–26.9 | 11,667 | |
| 1.4 | b1335–b1452 | 30.1–32.8 | 124,647 | |
| 4.2 | b1336–b1471 | 30.1–33.3 | 145,467 | |
| 1.5 | 4.3 | b1878–b1892 | 42.3–42.6 | 15,625 |
| 4.4 | b2379 | 53.8 | 1,238 | |
| 1.6 | b2649–b2655 | 60.0 | 3,604 | |
| 4.5 | b2648–b2655 | 60.0 | 4,117 | |
| 4.6 | b2853–b2861 | 64.5–64.6 | 4,293 | |
| 4.7 | b3027 | 68.3 | 332 | |
| 1.7 | b3647 | 82.3 | 1,688 | |
| 1.8 | 4.8 | b3708–b3715 | 83.8–84.0 | 8,724 |
| 1.9 | b4216 | 95.6 | 554 | |
| 1.10 | 4.9 | b4308–b4315 | 97.7–97.9 | 9,252 |
| 1.11 | b4349–b4354 | 98.7–98.9 | 2,165 | |
[i] Deletion span based on b-number (Blattner et al. 1997).
[ii] Map position of genes lost within deletion span.
[iii] Size is estimated from left end of first deleted ORF to right end of last detected ORF.