Table 1.

General genomic features of the four EHEC strains

Strain	O157 Sakai	O26	O111	O103
Chromosome (kb)	5,498	5,697	5,371	5,449
CDSs	5,363	5,609	5,264	5,264
rRNA operons	7	7	7	7
tRNAs	105	101	106	98
Prophages	18 (13)	21 (13)	17 (15)	15 (11)
Integrative elements	6	9	7	6
IS elements	81	104	95	102
Plasmid (kb)	93/3	85/63/6/4	205/98/78/8/7	72
CDSs [plasmid total]	95	186	468	90
IS elements	17	31	24	14
Total genome size (kb)	5,594	5,856	5,766	5,525

Numbers of lambdoid PPs are indicated in parentheses