Submit Data |  Help |  Video Tutorials |  News |  Publications |  FTP Download |  REST API |  Citing RGD |  Contact   
Search RGD Grant Resources Citing RGD About Us Contact Us
Genes QTLs Strains Markers Genome Information Ontologies Cell Lines References FTP Download Submit Data
OntoMate (Literature Search) JBrowse (Genome Browser) Variant Visualizer Multi-Ontology Enrichment (MOET) Gene-Ortholog Location Finder (GOLF) InterViewer (Protein-Protein Interactions) PhenoMiner (Quatitative Phenotypes) Gene Annotator OLGA (Gene List Generator) RatMine GViewer (Genome Viewer) Overgo Probe Designer ACP Haplotyper Genome Scanner
Aging & Age-Related Disease Cancer Cardiovascular Disease COVID-19 Developmental Disease Diabetes Hematologic Disease Immune & Inflammatory Disease Liver Disease Neurological Disease Obesity & Metabolic Syndrome Renal Disease Respiratory Disease Sensory Organ Disease
Find Models   new Genetic Models PhenoMiner (Quantitative Phenotypes) Expected Ranges (Quantitative Phenotype) PhenoMiner Term Comparison Hybrid Rat Diversity Panel Phenotypes GERRC (Gene Editing Rat Resource Center) Phenotypes in Other Animal Models Animal Husbandry Strain Medical Records Phylogenetics Strain Availability Calendar Rats 101 Submissions Photo Archive
Pathways
Rat Community Forum Directory of Rat Laboratories Video Tutorials News RGD Publications RGD Poster Archive Nomenclature Guidelines Resource Links Laboratory Resources Employment Resources

Function of taurine transporter (Slc6a6/TauT) as a GABA transporting protein and its relevance to GABA transport in rat retinal capillary endothelial cells.

Authors: Tomi, Masatoshi  Tajima, Ayumi  Tachikawa, Masanori  Hosoya, Ken-ichi 
Citation: Tomi M, etal., Biochim Biophys Acta. 2008 Oct;1778(10):2138-42. doi: 10.1016/j.bbamem.2008.04.012. Epub 2008 May 3.
Pubmed: (View Article at PubMed) PMID:18501699
DOI: Full-text: DOI:10.1016/j.bbamem.2008.04.012

The purpose of this study was to identify the uptake mechanism of gamma-aminobutyric acid (GABA) via taurine transporter (Slc6a6/TauT) and its relationship with GABA transport at the inner BRB. Rat Slc6a6/TauT-transfected HeLa cells exhibited Na(+)-, Cl(-)-, and concentration-dependent [3H]GABA uptake with a Km of 1.5 mM. Taurine, beta-alanine, and GABA markedly inhibited Slc6a6/TauT-mediated uptake of [3H]GABA. The uptake of [3H]GABA by a conditionally immortalized rat retinal capillary endothelial cell line (TR-iBRB2) was Na(+)-, Cl(-)-, and concentration-dependent with a Km of 2.0 mM. This process was more potently inhibited by substrates of Slc6a6/TauT, taurine and beta-alanine, than those of GABA transporters, GABA and betaine. In the presence of taurine, there was competitive inhibition with a Ki of 74 microM. [3H]Taurine also exhibited competitive inhibition with a Ki of 1.8 mM in the presence of GABA. In conclusion, rat Slc6a6/TauT has the ability to use GABA as a substrate and Slc6a6/TauT-mediated GABA transport appears to be present at the inner BRB.

Annotation

Gene Ontology Annotations
Objects Annotated

Additional Information

  
RGD Object Information
RGD ID: 30309916
Created: 2020-06-20
Species: All species
Last Modified: 2020-06-20
Status: ACTIVE



Contact Us |  About Us |  License CC BY 4.0 |  Legal Disclaimer |  © Medical College of Wisconsin
NHLBI Logo

RGD is funded by grant HL64541 from the National Heart, Lung, and Blood Institute on behalf of the NIH.