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  • Title: L-glutamate transporter derived from mRNAs of primary glial cultures: expression in Xenopus laevis oocytes.
    Author: Alcántara R, Casado M, Olivares L, Giménez C, Aragón C.
    Journal: Brain Res Mol Brain Res; 1992 Sep; 15(1-2):167-70. PubMed ID: 1331663.
    Abstract:
    A high-affinity sodium-dependent L-glutamate transporter was expressed in Xenopus oocytes after microinjection of poly(A)+ RNA from primary astrocyte cultures from rat brain cortex. mRNA-induced L-glutamate transport was saturable by substrate and shows kinetic features similar to those found in intact glial cell preparations. L-Glutamate accumulation was prevented by rising the external K+ concentration or by coincubation with L-, D-aspartate or D-glutamate. After fractionation by sucrose density gradient, the mRNA encoding for the expressed L-glutamate transporter from glial cells was found in fractions containing messages of 2.05-2.9 kilobases (kb) in length.
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