TABLE 4 .

Oligonucleotide primers used in this study

Name	Sequence	Purpose
KH9#10B	5′ CCAAAACCGAAGCCTTGAAAACCAA 3′	mtrR::Kmr amplification
CEL1	5′ GACAATGTTCATGCGATGATAGG 3′	mtrR::Kmr amplification
C6	5′ CGACATTCCATTCGTCTTCCGG 3′	mtrA::Kmr amplification
C7	5′ GCCACGACGGAAAATGCGGAG 3′	mtrA::Kmr amplification
PEmtrC181	5′ CCTTAGAAGCATAAAAAGCCAT 3′	Primer extension of mtrC
mtrC_3	5′ AGTCGGATCCGGTTTGACGAGGGCGGAT 3′	Full mtrC-lacZ fusion
mtrC_4	5′ AGTCGGATCCAATTGAGACTGCATCT CAACT 3′	Truncated mtrC-lacZ fusion
PmtrCmut	5′ AGTGGATCCGTTTCGGGTCGGTTTGACGAGGG CGGATTATAAAAAAGACTTTTTATCCGTGCAA TCGTGTATGTAGCACGAAACCCA 3′	Wild-type mtrC promoter −10 mutation for lacZ fusion
mtrC_7	5′ AGTCGGATCCGAAGCATAAAAAGCC 3′	Reverse mtrC promoter primer
mtrC_F	5′ CGTTTCGGGTCGGTTTGACG 3′	mtrR-mtrC intergenic region amplification
mtrC_R	5′ CATCGCCTTAGAAGCATAAAAAGCC 3′	mtrR-mtrC intergenic region amplification
MTR1	5′ AACAGGCATTCTTATTTCAG 3′	mtrR amplification
MTR2	5′ TTAGAAGAATGCTTTGTGTC 3′	mtrR amplification