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XB-ART-23741
FEBS Lett 1992 May 11;3022:166-8.
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Functional expression of a plant plasma membrane transporter in Xenopus oocytes.

Boorer KJ , Forde BG , Leigh RA , Miller AJ .


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A full-length cDNA clone for the H+/hexose co-transporter (STP1) from Arabidopsis thaliana has been transcribed in vitro and the mRNA injected into Xenopus oocytes. Under optimized conditions, oocytes injected with the STP1 mRNA accumulated 3-O-[methyl-14C]glucose at rates of more than a 1000-fold greater than water-injected control oocytes. A hexose-elicited depolarization of the oocyte membrane potential was demonstrated, and uptake was shown to be stimulated by low external pH, confirming the activity of a H+/hexose co-transport system. This is the first example of the functional expression of a plant membrane transporter in oocytes.

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Species referenced: Xenopus laevis
Genes referenced: sult1a1