Fig. 6.

Efflux of radioactively labelled malate from Xenopus oocytes expressing HvALMT1. Oocytes were pre-loaded with [¹⁴C]malate and the radioactivity of the bathing solution was measured. Oocytes were injected with either HvALMT1 cRNA or water as a control and incubated at external pH 7.5 or pH 4.5. Shown is the mean efflux of radioactive malate from the oocyte 2 min and 5 min after injection. Error bars show the SEM (n=5), and columns with different letters are significantly different (P <0.05; n=5).