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Heterologous Expression of the Glutamine Transporter SNAT3 in Xenopus Oocytes Is Associated with Four Modes of Uncoupled Transport

Schneider, Hans-Peter; Broer, Stefan; Broer, Angelika; Deitmer, Joachim W


The glutamine transporter SNAT3 (SLC38A3, former SN1) plays a major role in glutamine release from brain astrocytes and in glutamine uptake into hepatocytes and kidney epithelial cells. Here we expressed rat SNAT3 in oocytes of Xenopus laevis and reinvestigated its transport modes using two-electrode voltage clamp and pH-sensitive microelectrodes. In addition to the established coupled Na+-glutamine-cotransport/H+ antiport, we found that there are three conductances associated with SNAT3, two...[Show more]

CollectionsANU Research Publications
Date published: 2007
Type: Journal article
Source: Journal of Biological Chemistry
DOI: 10.1074/jbc.M609452200


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