Table III.

Specificity of the AgSUT1 Suc carrier

CarrierAbsorption
%
None100
5 mmSuc65.4 ± 0.4
5 mmMannitol90.0 ± 1.2
5 mm Maltose81.6 ± 1.2
5 mm Raffinose74.7 ± 1.6
2 mmα-Phenylglucoside32.0 ± 1.1

Sugars were added 30 s prior to labeled Suc. All transport tests were performed at 250 μm Suc, pH 4.5, and incubation time was 3 min. The results are the means ± sd of three independent experiments (three replicates per experiment).