Fig. 6From: Role of electrostatic interactions for ligand recognition and specificity of peptide transportersComparison of substrate specificities of human PEPT1 and Q300K mutant. [3H]Ala-Ala uptake competition experiments were performed with Xenopus laevis oocytes expressing (a) wild-type human PEPT1 (hPEPT1-wt) and (b) the Q300K mutant (hPEPT1-Q300K). Error bars represent SEM from two independent experiments, each containing 12 oocytesBack to article page