Table 1

E. coli strains

StrainGenotypeReference
CAG18469MG1655 phe∷Tn10(56)
CAG18481MG1655 zff-208∷Tn10(56)
RZ4500MG1655 lacZΔ145(57)
PK3292RZ4500, fnr+, dmsA′-lacZThis lab
PK3293RZ4500, fnr, dmsA′-lacZThis lab
PK4304CAG18469, F′142This study
PK4326CAG18469, ΔiscS∷KnR, F′142This study
PK4331RZ4500 ΔiscS∷KnRThis study
PK4357PK3292 ΔiscS∷KnRThis study
PK4359PK3293 ΔiscS∷KnRThis study