FIG. 5.

Ethanolamine inhibits the growth of eutH mutants on succinate. Wild-type LT2 is indicated by squares, the eutHΔ mutant is indicated by triangles pointing up, the eutEΔ mutant is indicated by diamonds, and the eutEHΔ double mutant is indicated by triangles pointing down. The results presented (for pH 7) are intermediate between the result seen at pH 6.5 (complete correction) and that seen at pH 7.5 (no correction). Both the wild type and the eutH single mutant grow normally on succinate at all three pH values.