SLC29A4

This gene is a member of the SLC29 family and encodes a plasma membrane protein with 11 transmembrane helices. This protein catalyzes the reuptake of monoamines into presynaptic neurons, thus determining the intensity and duration of monoamine neural signaling. It has been shown to transport several compounds, including serotonin, dopamine, and the neurotoxin 1-methyl-4-phenylpyridinium. Alternate transcriptional splice variants which encode the same protein have been characterized. [provided by RefSeq]

solute carrier family 29 (nucleoside transporters), member 4

Functions as a polyspecific organic cation transporter, efficiently transporting many organic cations such as monoamine neurotransmitters 1-methyl-4-phenylpyridinium and biogenic amines including serotonin, dopamine, norepinephrine and epinephrine. May play a role in regulating central nervous system homeostasis of monoamine neurotransmitters. May be involved in luminal transport of organic cations in the kidney and seems to use luminal proton gradient to drive organic cation reabsorption. Does not seem to transport nucleoside and nucleoside analogs such as uridine, cytidine, thymidine, adenosine, inosine, guanosine, and azidothymidine. In (PubMed:16873718) adenosine is efficiently transported but in a fashion highly sensitive to extracellular pH, with maximal activity in the pH range 5.5 to 6.5. Glu-206 is essential for the cation selectivity and may function as the charge sensor for cationic substrates. Transport is chloride and sodium-independent but appears to be sensitive to changes in membrane potential. Weakly inhibited by the classical inhibitors of equilibrative nucleoside transport, dipyridamole, dilazep, and nitrobenzylthioinosine. May play a role in the regulation of extracellular adenosine concentrations in cardiac tissues, in particular during ischemia.

Biological Process cation transmembrane transportISS:ARUK-UCL
Biological Process dopamine uptakeManual Assertion Based On ExperimentIDA:ARUK-UCL
Biological Process epinephrine uptakeManual Assertion Based On ExperimentIDA:ARUK-UCL
Biological Process export across plasma membraneManual Assertion Based On ExperimentIMP:ARUK-UCL
Biological Process histamine metabolic processManual Assertion Based On ExperimentTAS:ARUK-UCL
Biological Process histamine uptakeManual Assertion Based On ExperimentIDA:ARUK-UCL
Biological Process monoamine transportManual Assertion Based On ExperimentIMP:ARUK-UCL
Biological Process neurotransmitter transportManual Assertion Based On ExperimentIDA:ARUK-UCL
Biological Process norepinephrine uptakeManual Assertion Based On ExperimentIDA:ARUK-UCL
Biological Process organic acid transmembrane transportManual Assertion Based On ExperimentIDA:ARUK-UCL
Biological Process organic cation transportManual Assertion Based On ExperimentIDA:ARUK-UCL
Biological Process serotonin uptakeManual Assertion Based On ExperimentIDA:ARUK-UCL
Biological Process toxin transportISS:ARUK-UCL
Biological Process transport across blood-brain barrier2 PublicationsNAS:ARUK-UCL
Biological Process xenobiotic transportManual Assertion Based On ExperimentIDA:ARUK-UCL

Cell membrane
Apical cell membrane
Located to the plasma membranes of ventricular myocytes and vascular endothelial cells. Targeted to the apical membranes of differentiated kidney epithelial cells.

N-glycosylated.