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Fig. 6. Influence of internal pH on the uptake of 0.1 mmol l1
[14C]oxalate into hepatopancreatic BBMV. Vesicles contained 100
mmol l1 TMA-Cl, 50 mmol l1 K-gluconate, 50
µmol l1 valinomycin and pH adjusted to 7.0 (
) or 8.0
(
) with 40 mmol l1 Hepes-Tris, or pH 5.0 (
) or
6.0 () with 40 mmol l1 Mes-Tris. Incubation media
contained 100 mmol l1 TMA-gluconate, 50 mmol
l1 K-gluconate and 40 mmol l1 Hepes-Tris
at pH 7.0.