1
RpoDhs-lacZ)) (27), which is a MC4100 derivative that lacks the rpoH gene but is able to grow at 37 due to the overproduction of GroEL and GroES, was used for the purification of 32. AD202 (MC4100 ompT::kan) (28) was used for the purification of FtsH. HB101 (supE (mcrC-mrr) recA ara-14 proA lacY galK rpsL xyl-5 mtl-1 leuB thi-1) and MC4100 were used for the purification of DnaK and DnaJ, respect