Table 1.
General features of the E. coli 536 genome compared with those of other sequenced E. coli strains
| Strains | Chromosome size, bp | Plasmids (bp) | No. of prophage-like elements | DNA coding sequence, % | No. of ORFs | C + G content, % | No. of rRNA genes | No. of tRNA genes | No. of predicted miscellaneous RNAs† | Backbone, %* | No. of strain-specific ORFs (%) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 536 (UPEC) (O6:K15:H31) | 4,938,875 | – | 1 | 88 | 4,747* | 50.5 | 22 | 81 | 45 | 77 | 374 (8) |
| CFT073 (UPEC) (O6:K2:H1) | 5,231,428 | – | 5 | 89 | 5,533 (5,379*) | 50.5 | 22 | 88 | 51 | 71 | 867 (16) |
| MG1655 (K-12) | 4,639,221 | – | 10 | 89 | 4,411 | 50.8 | 22 | 87 | 47 | 81 | 406 (9) |
| EDL933 (EHEC) (O157:H7) | 5,528,445 | pO157 (92,721) | 16 | 88 | 5,361 | 50.5 | 22 | 100 | 53 | 67 | 1,270 (24) |
| Sakai (EHEC) (O157:H7) | 5,498,450 | pO157 (92,721), pOSAKI (3,308) | 24 | 88 | 5,981 | 50.5 | 22 | 103 | 13 | ND | ND |
ND, not determined.
*Data were found by using the ORF prediction program YACOP.
†Data were found by using the Rfam database (www.sanger.ac.uk/Software/Rfam).