Table 2.

$v_{max}^{\mathrm{Asp}}$ (app) and $K_M^{\mathrm{Asp}}$ (app) values for aspartate dependent uptakes obtained at constant [Na⁺].

[Na+]	$v_{max}^{\mathrm{ASP}}$ (app) (min−1)	$K_M^{\mathrm{ASP}}$ (app) (µM)
5 mM	29.2 ± 0.58	36 ± 1.9
10 mM	34.8 ± 1.5	16.8 ± 2.4
25 mM	44.7 ± 2.9	5.5 ± 1.5
50 mM	45.5 ± 2.3	1.2 ± 0.3
100 mM	52.1 ± 2.6	0.70 ± 0.16
200 mM	54.2 ± 4.1	0.58 ± 0.23
300 mM	53.7 ± 3.1	0.70 ± 0.22

Values are derived from the data presented in Table 1 and Fig. 1a. Each uptake rate represents the average of three independent biological replicates, each with two technical replicates. The standard error of the mean is indicated.