Table 1.
Primer mix | Primer sequence | Primer name | Gene target | PCR Size (bp) | Pathotype | Plasmid controla |
---|---|---|---|---|---|---|
M1b | 5′-GAGCGAAATAATTTATATGTG-3′ | VT.F | VT | 518 | STEC | pOG401 |
5′-TGATGATGGCAATTCAGTAT-3′ | VT.R | |||||
5′-CTGAACGGCGATTACGCGAA-3′ | eae.F | eae | 917 | STEC, EPEC | pOG390 | |
5′-CGAGACGATACGATCCAG-3′ | eae.R | |||||
5′-AATGGTGCTTGCGCTTGCTGC-3′ | bfpA.F | bfpA | 326 | EPEC | pOG394 | |
5′-GCCGCTTTATCCAACCTGGTA-3′ | bfpA.R | |||||
5′-GTATACACAAAAGAAGGAAGC-3′ | aggR.F | aggR | 254 | EAEC | pOG395 | |
5′-ACAGAATCGTCAGCATCAGC-3′ | aggR.F | |||||
M2b | 5′-GCACACGGAGCTCCTCAGTC-3′ | LT.F | LT | 218 | ETEC | pWD299 |
5′-TCCTTCATCCTTTCAATGGCTTT-3′ | LT.R | |||||
5′-GCTAAACCAGTAGAG(C)TCTTCAAAA-3′ | ST.F | ST | 147 | ETEC | pSLm004 | |
5′-CCCGGTACAG(A)GCAGGATTACAACA-3′ | ST.R | |||||
5′-GAACGTTGGTTAATGTGGGGTAA-3′ | daaE.F | daaE | 542 | DAEC | pOG391 | |
5′-TATTCACCGGTCGGTTATCAGT-3′ | daaE.R | |||||
5′-AGCTCAGGCAATGAAACTTTGAC-3′ | virF.F | virF | 618 | EIEC | pOG392 | |
5′-TGGGCTTGATATTCCGATAAGTC-3′ | virF.R | |||||
5′-CTCGGCACGTTTTAATAGTCTGG-3′ | ipaH.F | ipaH | 933 | EIEC | pOG393 | |
5′-GTGGAGAGCTGAAGTTTCTCTGC-3′ | IpaH.R | |||||
Pc | 5′-GACGAACCAACGGTCAGGAT-3′ | chuA.F | chuA | 279 | NA | - |
5′-TGCCGCCAGTACCAAAGACA-3′ | chuA.R | |||||
5′-TGAAGTGTCAGGAGACGCTG-3′ | yiaA.F | yiaA | 211 | NA | - | |
5′-ATGGAGAATGCGTTCCTCAAC-3′ | yiaA.R | |||||
5′-GAGTAATGTCGGGGCATTCA-3′ | TspE4C2.F | TspE4C2 | 152 | NA | - | |
5′-CGCGCCAACAAAGTATTACG-3′ | TspE4C2.R | |||||
VT1 | 5′-CAGTTAATGTGGTGGCGAAGG-3 | VT1.F | VT1 | 348 | STEC | - |
5′CACCAGACAATGTAACCGCTG-3′ | VT1.R | |||||
VT2 | 5′-ACCGTTTTTCAGATTTT(G/A)CACATA-3′ | VT2.F | VT2 | 298 | STEC | - |
5′-TACACAGGAGCAGTTTCAGACAGT-3′ | VT2.R | |||||
uigA | 5′-GCGTCTGTTGACTGGCAGGTGGTGG-3′ | uidA.F | uidA | 503 | NA | - |
5′-GTTGCCCGCTTCGAAACCAATGCCT-3′ | uidA.R |
M1 and M2 are primer mixes to be used for the two-sample multiplex PCR assay for detection of Escherichia coli pathotypes.
Plasmids carrying each one of the E. coli pathotype gene targets. Plasmids are used as template DNA control for the two-sample multiplex PCR assay as previously described (Gomez-Duarte et al., 2009).
P is the primer mix to be used for a single-multiplex PCR for identification of phylogenetic group (Clermont et al., 2000).
PCR, polymerase chain reaction; EPEC, enteropathogenic Escherichia coli; STEC, shiga-toxin producing E. coli; EAEC, enteroaggregative E. coli; ETEC, enterotoxigenic E. coli; DAEC, diffuse adherent E. coli; EIEC, enteroinvasive E. coli; NA, not applicable.