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Molecular heterogeneity of the gamma-aminobutyric acid (GABA) transport system. Cloning of two novel high affinity GABA transporters from rat brain.
Open accessAbstract
cDNA clones encoding two novel gamma-aminobutyric acid (GABA) transporters (designated GAT-2 and GAT-3) have been isolated from rat brain, and their functional properties have been examined in mammalian cells. The transporters display high affinity for GABA (Km approximately 10 microM) and exhibit pharmacological properties distinct from the previously cloned neuronal GABA transporter (GAT-1). Both transporters require sodium and chloride for transport activity. The nucleotide sequences of GAT-2 and GAT-3 predict proteins of 602 and 627 amino acids, respectively, which can be modeled with 12 transmembrane domains, similar to the topology proposed for other cloned neurotransmitter transporters. Localization studies indicate that both transporters are present in brain and retina, while GAT-2 is also present in peripheral tissues. The cloning of these transporter genes from rat brain reveals previously undescribed heterogeneity in GABA transporters.
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Cited by
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Borden, L. A., Dhar, T. G. M., Smith, K. E., Weinshank, R. L., Branchek, T. A., & Gluchowski, C. (1994) · European Journal of Pharmacology: Molecular Pharmacology · doi:10.1016/0922-4106(94)90089-2 · Cited by 334
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Zhou, Y., Holmseth, S., Guo, C., Hassel, B., Höfner, G., Huitfeldt, H. S., Wanner, K. T., & Danbolt, N. C. (2012) · Journal of Biological Chemistry · doi:10.1074/jbc.m112.368175 · Cited by 102
Metadata
- Authors
- Borden, L. A., Smith, K. E., Hartig, P. R., Branchek, T. A., & Weinshank, R. L.
- Venue
- Journal of Biological Chemistry
- Publisher
- Elsevier BV
- Published
- 1992-10
- Volume
- 267
- Issue
- 29
- Pages
- 21098-21104
- ISSN
- 0021-9258 (ISSN-L)
- OpenAlex
- W1516995650
- Cited by
- 318
- References
- 0
- FWCI
- 6.59
- Type
- journal article
- Language
- en
- Open access
- hybrid
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- Borden, L. A., Smith, K. E., Hartig, P. R., Branchek, T. A., & Weinshank, R. L. (1992). Molecular heterogeneity of the gamma-aminobutyric acid (GABA) transport system. Cloning of two novel high affinity GABA transporters from rat brain. Journal of Biological Chemistry. https://doi.org/10.1016/s0021-9258(19)36802-4
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