Summary
Plasma membrane vesicles were prepared from Ehrlich cells using two-phase system compartmentation. The highly pure plasma membrane vesicles obtained presented a negligible mitochondrial contamination and were suitable for studies of amino acid transport.l-Serine transport showed a clear ionic specificity, maximum incorporation being observed when an inwardly directed NaSCN gradient was used. Na+-dependentl-serine transport was dependent on assay temperature and membrane potential, and it seemed to be carried out by two different transport systems. An essential sulfhydryl group seemed to be involved in the transport process.
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Luque, P., Márquez, J., Núñez de Castro, I. et al. Sodium-dependentl-serine transport in plasma membrane vesicles isolated from Ehrlich cells by two-phase compartmentation. J. Membrain Biol. 123, 247–254 (1991). https://doi.org/10.1007/BF01870407
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DOI: https://doi.org/10.1007/BF01870407