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. 2012 Oct 29;7(10):e47756. doi: 10.1371/journal.pone.0047756

Table 1. Bacteria strains and plasmids used in this study.

Strain or plasmid Relevant characteristic Reference
E. coli strains
XL1-Blue F′::Tn10 proA + B + lacq Δ(lacZ)M151 recA1 endA1 gyrA46 (Nalr) thi hsdR17 (rK mK +) supE44 relA1 lac NEB
DH5αλpir F Φ80dlacZΔM15Δ(argF lac)U169 deoR recA1 endA1 hsdR17 (rK mK +) supE44 thi-1 gyrA69 relA1 λ recA::RPA-2-Te::Mu λpirR6K, kmr [69]
SM10λpir thi thr leu tonA lacY supE recA::RPA-2-Te::Mu λpirR6K, kmr [25]
V. cholerae strains
O395 O1 Ogawa, classical, clinical isolate, India 1964, spontaneous smr [41]
P27459-S O1 Inaba, El Tor, clinical isolate, Bangladesh 1976, spontaneous smr [40]
O395 ΔdsbA::km dsbA replaced by km cassette, smr, kmr This study
O395 ΔdsbB::km dsbB replaced by km cassette, smr, kmr This study
O395 ΔtoxR Deletion in toxR, smr This study
O395 ΔtoxRS Deletion in toxR and toxS, smr This study
P27459-S ΔdsbA::km dsbA replaced by km cassette, smr, kmr This study
P27459-S ΔdsbA::km ΔtoxRS dsbA replaced by km cassette, deletion of toxR and toxS, smr, kmr This study
P27459-S ΔdsbB::km dsbB replaced by km cassette, smr, kmr This study
P27459-S dsbC::pGP dsbC inserted by pGP704, amr This study
P27459-S ΔtoxR Deletion in toxR, smr This study
P27459-S ΔtoxRS Deletion in toxR and toxS, smr This study
O395 ΔtoxR::FLAGtoxR toxR replaced by FLAGtoxR, smr This study
O395 ΔtoxR::FLAGtoxRCC toxR replaced by FLAGtoxRC236SC293S, smr This study
O395 ΔtoxR::FLAGtoxR ΔtoxS toxR replaced by FLAGtoxR, deletion in toxS, smr This study
P27459-S ΔtoxR::FLAGtoxR toxR replaced by FLAGtoxR, smr This study
P27459-S ΔtoxR::FLAGtoxRCC toxR replaced by FLAGtoxRC236SC293S, smr This study
P27459-S ΔtoxR::FLAGtoxR ΔlacZ toxR replaced by FLAGtoxR, deletion in lacZ, smr This study
P27459-S ΔtoxR::FLAGtoxR ΔtoxS toxR replaced by FLAGtoxR, deletion in toxS, smr This study
Plasmids
pKEK229 OriR6K mobRP4 sacB, apr [70]
pGP704 OriR6K mobRP4, apr [25]
pCVD442 OriR6K mobRP4 sacB, apr [45]
pKan π kmr [71]
pBAD18 Expression vector, arabinose inducible, apr [72]
pFLAG-MAC™ Expression vector with N-terminal FLAG-Tag, IPTG inducible, apr Sigma-Aldrich
pGPdsbC pGP704 carrying internat fragment of dsbC′ apr This study
pKEK229dsbA::km pCVD442 carrying up and down fragment of dsbA flanking a km cassette, apr This study
pKEK229dsbB::km pCVD442 carrying up and down fragment of dsbB flanking a km cassette, apr This study
pCVD442lacZ pCVD442 carrying up and down fragments of lacZ, apr This study
pCVD442toxR pCVD442 carrying up and down fragment of toxR, apr This study
pCVD442toxRS pCVD442 carrying up fragment of toxR and down fragments of toxS, apr This study
pdsbA dsbA of P27459-S in pBAD18, apr This study
pdsbB dsbB of P27459-S in pBAD18, apr This study
pFLAGtoxR toxR of P27459-S in pFLAG-MAC™, apr This study
pFLAGtoxRCC toxRC236SC293S point mutant of P27459-S in pFLAG-MAC™, apr This study
pFLAGtoxRS toxR and toxS of P27459-P in pFLAG-MAC™, apr This study
pFLAGtoxRCCS toxRC236SC293S point mutant and toxS of P27459-P in pFLAG-MAC™, apr This study
pFLAGtoxRS(Δ264) pFLAGtoxRS carrying a 264 bp deletion in toxS generated by two internal AccI sites, apr This study
pFLAGtoxRS_ompU toxR, toxS and operator region of ompU of P27459-P in pFLAG-MAC™, apr This study
pFLAGtoxRS_toxT toxR, toxS and operator region of toxT of P27459-P in pFLAG-MAC™, apr This study
pFLAGtoxRS_ompU(Δ264) pFLAGtoxRS_ompU carrying a 264 bp deletion in toxS generated by two internal AccI sites, apr This study
pFLAGtoxRS_toxT(Δ264) pFLAGtoxRS_toxT carrying a 264 bp deletion in toxS generated by two internal AccI sites, apr This study
pFLAGtoxRCCS_ompU toxRC236SC293S point mutant, toxS and operator region of ompU of P27459-P in pFLAG-MAC™, apr This study
pFLAGtoxRCCS_toxT toxRC236SC293S point mutant, toxS and operator region of toxT of P27459-P in pFLAG-MAC™, apr
pCVD442FLAGtoxR pCVD442 carrying FLAGtoxR, apr
pCVD442FLAGtoxRCC pCVD442 carrying FLAGtoxRC236SC293S, apr
pCVD442FLAGtoxRS pCVD442 carrying FLAGtoxR and toxS, apr