Neuronal and glial gamma-aminobutyric acid+ transporters are distinct proteins
- PMID: 1544482
- DOI: 10.1016/0014-5793(92)80109-t
Neuronal and glial gamma-aminobutyric acid+ transporters are distinct proteins
Abstract
In the central nervous system, two subtypes of sodium- and chloride-coupled GABA transporter exist. One is sensitive to ACHC, the other to beta-alanine. They are thought to be of neuronal and glial origin, respectively. GABA transport in membrane vesicles derived from astroglial cells was found to be sodium- and chloride-dependent, electrogenic and much more sensitive to beta-alanine than to ACHC. Immunoblotting with antibodies directed against a variety of sequences of the ACHC-sensitive transporter indicated that none of these epitopes was shared by the glial transporter.
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