FIG. 3.

Kinetics of glycine betaine uptake in wild-type and DHP^R-38.1 L. plantarum ATCC 14917. The cells were grown on CDM or CDM without proline, washed, and resuspended in 50 mM potassium phosphate (pH 6.5). After 7 min of preenergization with 10 mM glucose, uptake was initiated by the addition of [¹⁴C]glycine betaine with (squares) or without (circles) 0.8 M KCl. Further details are described in the footnote to Table 2.