Figure 3.

Percent uptake of 50 uM [³H]-Thr in the presence of 140 mM NaCl and increasing concentrations of (A) Leu (n = 6 for each point; 3 determinations obtained in each of 2 independent experiments) or (B) Pro (n = 6 for each point; 3 determinations obtained in each of 2 independent experiments). Thr uptake was also measured in the presence of 20 mM non-radioactive Thr. A one-way ANOVA indicated statistically significant differences in [³H]-Thr uptake as the concentration of Leu and Pro increased. An asterisk (^*) signifies significantly more inhibition by a treatment than the one that precedes it (p < 0.05). (C) Percent uptake of 50 uM [³H]-Thr in the presence of 140 mM NaCl and Leu, Pro, or Leu and Pro combined (n = 6 for each point; 3 determinations obtained in each of 2 independent experiments). A one-way ANOVA indicated no statistically significant differences (p > 0.05) in [³H]-Thr uptake except between 5 mM Pro and 10 mM Leu.