TABLE 1.

Bacterial strains and expression plasmids used in this study

Strain or plasmidRelevant genotypeReference or source
V. cholerae strain
    C6706 str2E1 Tor Inaba SmrLaboratory collection
    KSK262C6706 str2 ΔlacZ311
    GK972KSK262 ΔhapR-lacZThis work
    KSK2226KSK262 hapR+ lacZ::hapR-lacZThis work
    KSK2234KSK2226 ΔhapRThis work
    KSK2316KSK262 ΔhapR-lacZ +18 A to GThis work
    KSK2337KSK262 hapR+ lacZ::hapR-lacZ +18 A to GThis work
    KSK2339C6706 +18 A to G in hapR promoterThis work
Expression plasmids
    pKAS189pMMB66EH hapR13