Mechanism of UDP‐sugar transport into intracellular vesicles

FEBS Letters

Cacan, René¹  Verbert, André¹  Cecchelli, Roméo¹ 

[1] Laboratoire de Chimie Biologique, Unité Associée au CNRS no. 217, Université de Lille Flandres-Artois, 59655 Villeneuve d'Ascq Cedex, France

关键词: UDP-sugar transport (Permeabilized cell) Antiport;   

DOI  :  10.1016/0014-5793(86)81058-4

学科分类：生物化学/生物物理

来源: John Wiley & Sons Ltd.

【 摘 要 】

The mechanism of translocation of UDP-GlcNAc, UDP-Gal and UDP-Glc into intracellular vesicles has been studied using thymocytes whose plasma membranes have been permeabilized with isotonic ammonium chloride. It has been previously shown that the intracellular vesicles have specific carriers for UDP-GlcNAc and UDP-Gal. We now report that the translocation of these two sugar nucleotides occurs via UDP-GlcNAc/UDP and UDP-Gal/UDP antiports. The entry of UDP-GlcNAc or UDP-Gal into vesicles was specifically dependent on the exit of UDP from these vesicles. In contrast, no antiport mechanism has been recovered with UDP-Glc for which no transport and accumulation into intracellular vesicles were observed.

【 授权许可】

Unknown