TABLE 1.

Oligonucleotides used to monitor ERIC-positive RNAs^a

Primer	Sequence
pex. cheW	TTCGTGACGGTTGCTAGTCCTGCCA
pex. trpB	CCCGAACTCGCCAAAATAGGGATTC
pex. uncE	CGATAAAGAACTGTGTACGCAGCAG
pex. lpdA	GGATACAACCGACATTCAGGCACAC
cheB-for	atttaggtgacactatagaaAACTATCAGGTGCGTATTCATGATG
cheB-rev	taatacgactcactatagggGCTTCGTTTTGTGCAATGGTATAAG
cheY-for	atttaggtgacactatagaaTGGTAGACGATTTTTCGACCATGCG
cheY-rev	taatacgactcactatagggTCGGCATGTTCCAGTCAGAAACCAC
panB-for	atttaggtgacactatagaaGCTAACCAGCTATTGAAAGATGCTC
panB-rev	taatacgactcactatagggGAATATACAGCTTAATGGCAGCACG
panC-for	atttaggtgacactatagaaATTGAAACTTTGCCACTGTTACGCC
panC-rev	taatacgactcactatagggATACTCACGACGACAACATCGGCAC

^aThe oligonucleotides used as primers in RNA extension assays are listed at the top. The pairs of 45-mers shown at the bottom have been used to obtain by PCR DNA amplimers in which copies of the bacteriophage T7 promoter (underlined residues) direct the synthesis of antisense RNA probes (Fig. 6). Uppercase residues mark Y. enterocolitica sequences.