TABLE 3.

SNP loci identified by sequencing eight rhs genes from the lineage strains

^aSNP positions are based upon the corresponding rhs gene of the E. coli O157:H7 strain Sakai. Numbers represent the nucleotide position of each SNP (i.e., the first column represents nucleotide position 18 of rhsA). Identical nucleotides at each SNP locus are indicated by dots. #, amplification of rhsI from FRIK1985, FRIK1990, FRIK2000, FRIK2001, FRIK920 and FRIK944 was not successful; *, there is a deletion from nucleotide position 3377 to 3463 in rhsA of strain FRIK2001; **, there is a 54-nucleotide insertion at nucleotide position 1958 in rhsD of strain FDA508.

^bLineage designations were defined by Kim et al. (22).

^cL stands for lineage, and the numbers were assigned to different STs.