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. 2000 Aug 22;97(18):9931–9936. doi: 10.1073/pnas.170153097

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Transport properties of Q169N mutant PfHT1. (Left) Initial mean d-glucose uptake rates for PfHT1 and Q169N mutant (one of three independent experiments in each case; eight oocytes per concentration; mean ± SE). For PfHT1 in this experiment, K_m = 1.6 mM, V_max = 302 pmol/oocyte/h; for Q169N K_m = 1.4 mM, V_max = 650 pmol/oocyte/h. (Right) d-fructose inhibition of d-[¹⁴C]glucose uptake in PfHT1 and Q169N mutant. Uptakes (eight oocytes per concentration; mean ± SE) are expressed relative to d-glucose uptake in uncompeted oocytes.