Figure 8. Cysteine export by AlaE ameliorates cysteine toxicity.
(A) In a ΔyhaO background (right two strains), AlaE almost completely suppresses growth inhibition during cysteine intoxication. (B) Growth curves exhibiting AlaE suppression of growth inhibition. Both strains lacked the cysteine importer YhaO. MG1655 (Wt), SSK226 (ΔalaE yhaO+), SSK209 (alaE+ ΔyhaO), SSK238 (ΔalaE ΔyhaO).