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Rapid downregulation of the rat glutamine transporter SNAT3 by a caveolin-dependent trafficking mechanism in Xenopus laevis oocytes

Balkrishna, Sarojini; Broer, Angelika; Kingsland, Alice; Broer, Stefan


The glutamine transporter SNAT3 is involved in the uptake and release of glutamine in the brain, liver, and kidney. Substrate transport is accompanied by Na+ cotransport and H+ antiport. In this study, treatment of Xenopus laevis oocytes expressing rat SNAT3 with the phorbol ester PMA resulted in a rapid downregulation of glutamine uptake in less than 20 min. PMA treatment of oocytes coexpressing SNAT3 and the monocarboxylate transporter MCT1 reduced SNAT3 activity only, demonstrating the...[Show more]

CollectionsANU Research Publications
Date published: 2010
Type: Journal article
Source: American Journal of Physiology - Cell Physiology
DOI: 10.1152/ajpcell.00209.2010


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