taurine:sodium symporter activity
Definition
Target type: molecularfunction
Enables the transfer of a solute or solutes from one side of a membrane to the other according to the reaction: taurine(out) + Na+(out) = taurine(in) + Na+(in). [TC:2.A.22.3.3]
Taurine:sodium symporter activity refers to the transmembrane transport of both taurine and sodium ions across the cell membrane. This process is facilitated by a specific protein known as the taurine:sodium symporter (TauT). The transporter functions by coupling the movement of taurine with the inward flow of sodium ions down their electrochemical gradient. This coupled movement allows for the efficient uptake of taurine into the cell, even against its own concentration gradient. The mechanism involves the binding of both taurine and sodium ions to the transporter, leading to a conformational change in the protein that allows the transport of both molecules across the membrane. This activity is vital for maintaining cellular taurine homeostasis and plays a crucial role in various physiological processes including neurotransmission, osmotic regulation, and bile acid conjugation. It also contributes to the detoxification of reactive oxygen species and the modulation of neuronal excitability.'
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Proteins (3)
| Protein | Definition | Taxonomy |
|---|---|---|
| Sodium- and chloride-dependent GABA transporter 2 | A sodium- and chloride-dependent GABA transporter 2 that is encoded in the genome of human. [PRO:DNx, UniProtKB:Q9NSD5] | Homo sapiens (human) |
| Sodium- and chloride-dependent GABA transporter 3 | A sodium- and chloride-dependent GABA transporter 3 that is encoded in the genome of human. [PRO:DNx, UniProtKB:P48066] | Homo sapiens (human) |
| Sodium- and chloride-dependent taurine transporter | A sodium- and chloride-dependent taurine transporter that is encoded in the genome of human. [PRO:DNx, UniProtKB:P31641] | Homo sapiens (human) |
Compounds (15)
| Compound | Definition | Classes | Roles |
|---|---|---|---|
| gamma-aminobutyric acid | gamma-aminobutyric acid : A gamma-amino acid that is butanoic acid with the amino substituent located at C-4. gamma-Aminobutyric Acid: The most common inhibitory neurotransmitter in the central nervous system. | amino acid zwitterion; gamma-amino acid; monocarboxylic acid | human metabolite; neurotransmitter; Saccharomyces cerevisiae metabolite; signalling molecule |
| beta-alanine | amino acid zwitterion; beta-amino acid | agonist; fundamental metabolite; human metabolite; inhibitor; neurotransmitter | |
| 2,3-diaminopropionic acid | 3-aminoalanine : A diamino acid that is alanine in which one of the hydrogens of the methyl group is replaced by an amino group. | alanine derivative; amino acid zwitterion; beta-amino acid; diamino acid; non-proteinogenic alpha-amino acid | Escherichia coli metabolite |
| taurine | amino sulfonic acid; zwitterion | antioxidant; Escherichia coli metabolite; glycine receptor agonist; human metabolite; mouse metabolite; nutrient; radical scavenger; Saccharomyces cerevisiae metabolite | |
| guvacine | guvacine : A alpha,beta-unsaturated monocarboxylic acid that is nicotinic acid which has been hydrogenated at the 1-2 and 5-6 positions of the pyridine ring. guvacine: RN given refers to parent cpd | alpha,beta-unsaturated monocarboxylic acid; beta-amino acid; pyridine alkaloid; secondary amino compound; tetrahydropyridine | GABA reuptake inhibitor; plant metabolite |
| nipecotic acid | nipecotic acid : A piperidinemonocarboxylic acid that is piperidine in which one of the hydrogens at position 3 is substituted by a carboxylic acid group. nipecotic acid: RN given refers to cpd without isomeric designation | beta-amino acid; piperidinemonocarboxylic acid | |
| tiagabine | tiagabine : A piperidinemonocarboxylic acid that is (R)-nipecotic acid in which the hydrogen attached to the nitrogen has been replaced by a 1,1-bis(3-methyl-2-thienyl)but-1-en-4-yl group. A GABA reuptake inhibitor, it is used (generally as the hydrochloride salt) for the treatment of epilepsy. Tiagabine: A nipecotic acid derivative that acts as a GABA uptake inhibitor and anticonvulsant agent. It is used in the treatment of EPILEPSY, for refractory PARTIAL SEIZURES. | beta-amino acid; piperidinemonocarboxylic acid; tertiary amino compound; thiophenes | anticonvulsant; GABA reuptake inhibitor |
| ci 966 | CI 966: GABA uptake blocker; RN from Toxlit | diarylmethane | |
| hinokinin | hinokinin : A lignan that is dihydrofuran-2(3H)-one (gamma-butyrolactone) substituted by a 3,4-methylenedioxybenzyl group at positions 3 and 4 (the 3R,4R-diastereoisomer). hinokinin: suppresses expression of both HBsAg and HBeAg | benzodioxoles; gamma-lactone; lignan | trypanocidal drug |
| n-(1-benzyl-4-piperidinyl)-2,4-dichlorobenzamide | N-(1-benzyl-4-piperidinyl)-2,4-dichlorobenzamide: inhibits the betaine-GABA transporter 1; structure in first source | ||
| nipecotic acid | (R)-nipecotic acid : The (R)-enantiopmer of nipecotic acid. | amino acid zwitterion; nipecotic acid | |
| nipecotic acid, (s)-isomer | (S)-nipecotic acid : The (S)-enantiomer of nipecotic acid. | nipecotic acid | |
| 2-ethoxy-N-[1-(phenylmethyl)-4-piperidinyl]benzamide | piperidines | ||
| nnc 05-2090 | NNC 05-2090: structure given in first source | carbazoles | |
| snap 5114 |