| Identification |
|---|
| HMDB Protein ID
| CDBP02042 |
| Secondary Accession Numbers
| Not Available |
| Name
| Equilibrative nucleoside transporter 4 |
| Description
| Not Available |
| Synonyms
|
- Plasma membrane monoamine transporter
- Solute carrier family 29 member 4
- hENT4
|
| Gene Name
| SLC29A4 |
| Protein Type
| Transporter |
| Biological Properties |
|---|
| General Function
| Involved in nucleoside transmembrane transporter activity |
| Specific Function
| 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 |
| GO Classification
|
| Component |
| membrane |
| cell part |
| Function |
| substrate-specific transmembrane transporter activity |
| nucleobase, nucleoside, nucleotide and nucleic acid transmembrane transporter activity |
| nucleoside transmembrane transporter activity |
| transporter activity |
| transmembrane transporter activity |
| Process |
| establishment of localization |
| transport |
|
| Cellular Location
|
- Cell membrane
- Multi-pass membrane protein (Potential)
- Multi-pass membrane protein (Potential)
- Apical cell membrane
|
| Pathways
|
Not Available
|
| Gene Properties |
|---|
| Chromosome Location
| Chromosome:7 |
| Locus
| 7p22.1 |
| SNPs
| SLC29A4 |
| Gene Sequence
|
>1593 bp
ATGGGCTCCGTGGGGAGCCAGCGCCTTGAGGAGCCCAGCGTGGCAGGCACACCAGACCCG
GGCGTAGTGATGAGCTTCACCTTCGACAGTCACCAGCTGGAGGAGGCGGCGGAGGCGGCT
CAGGGCCAGGGCCTTAGGGCCAGGGGCGTCCCAGCTTTCACGGATACTACATTGGACGAG
CCAGTGCCCGATGACCGTTATCACGCCATCTACTTTGCGATGCTGCTGGCTGGCGTGGGC
TTCCTGCTGCCATACAACAGCTTCATCACGGACGTGGACTACCTGCATCACAAGTACCCA
GGGACCTCCATCGTGTTTGACATGAGCCTCACCTACATCTTGGTGGCACTGGCAGCTGTC
CTCCTGAACAACGTCCTGGTGGAGAGACTGACCCTGCACACCAGGATCACCGCAGGCTAC
CTCTTAGCCTTGGGCCCTCTCCTTTTTATCAGCATCTGCGACGTGTGGCTGCAGCTCTTC
TCTCGGGACCAGGCCTACGCCATCAACCTGGCCGCTGTGGGCACCGTGGCCTTCGGCTGC
ACAGTGCAGCAATCCAGCTTCTACGGGTACACGGGGATGCTGCCCAAGCGGTACACGCAG
GGGGTGATGACCGGGGAGAGCACGGCGGGCGTGATGATCTCTCTGAGCCGCATCCTCACG
AAGCTGCTGCTGCCCGACGAGCGCGCCAGCACGCTCATCTTCTTCCTGGTGTCGGTGGCG
CTGGAGCTGCTGTGTTTCCTGCTGCACCTGTTAGTGCGGCGCAGCCGCTTCGTGCTCTTC
TATACCACACGGCCGCGTGACAGCCACCGGGGCAGGCCAGGCCTGGGCAGGGGCTATGGC
TACCGCGTGCACCACGACGTTGTCGCCGGGGACGTCCACTTCGAGCACCCAGCCCCGGCC
CTGGCCCCCAACGAGTCCCCAAAGGACAGCCCAGCCCACGAGGTGACCGGCAGCGGCGGG
GCCTACATGCGCTTTGATGTGCCGCGGCCAAGGGTCCAGCGCAGCTGGCCCACCTTCAGA
GCCCTGTTACTGCACCGCTACGTGGTGGCGCGGGTGATCTGGGCCGACATGCTCTCCATC
GCCGTGACCTACTTCATCACGCTGTGCCTGTTCCCCGGCCTCGAGTCTGAGATCCGCCAC
TGCATCCTGGGCGAGTGGCTGCCCATCCTCATCATGGCTGTGTTCAACCTGTCAGACTTC
GTGGGCAAGATCCTGGCAGCCCTGCCCGTGGACTGGCGGGGCACCCACCTGCTGGCCTGC
TCCTGCCTGCGTGTGGTCTTCATCCCCCTCTTCATCCTGTGCGTCTACCCCAGCGGCATG
CCCGCCCTCCGTCACCCCGCCTGGCCCTGCATCTTCTCACTGCTCATGGGCATCAGCAAC
GGCTACTTCGGCAGCGTGCCCATGATCCTGGCGGCAGGCAAAGTGAGCCCCAAGCAGCGG
GAGCTGGCAGGGAACACCATGACCGTGTCCTACATGTCAGGGCTGACGCTGGGGTCCGCC
GTGGCCTACTGCACCTACAGCCTCACCCGCGACGCTCACGGCAGCTGCCTGCACGCCTCC
ACCGCCAATGGTTCCATCCTCGCAGGCCTCTGA
|
| Protein Properties |
|---|
| Number of Residues
| 530 |
| Molecular Weight
| 58058.0 |
| Theoretical pI
| 7.76 |
| Pfam Domain Function
|
|
| Signals
|
|
|
Transmembrane Regions
|
- ["69-89", "102-122", "140-160", "167-187", "232-252", "352-372", "382-402", "417-437", "451-471", "487-509"]
|
| Protein Sequence
|
>Equilibrative nucleoside transporter 4
MGSVGSQRLEEPSVAGTPDPGVVMSFTFDSHQLEEAAEAAQGQGLRARGVPAFTDTTLDE
PVPDDRYHAIYFAMLLAGVGFLLPYNSFITDVDYLHHKYPGTSIVFDMSLTYILVALAAV
LLNNVLVERLTLHTRITAGYLLALGPLLFISICDVWLQLFSRDQAYAINLAAVGTVAFGC
TVQQSSFYGYTGMLPKRYTQGVMTGESTAGVMISLSRILTKLLLPDERASTLIFFLVSVA
LELLCFLLHLLVRRSRFVLFYTTRPRDSHRGRPGLGRGYGYRVHHDVVAGDVHFEHPAPA
LAPNESPKDSPAHEVTGSGGAYMRFDVPRPRVQRSWPTFRALLLHRYVVARVIWADMLSI
AVTYFITLCLFPGLESEIRHCILGEWLPILIMAVFNLSDFVGKILAALPVDWRGTHLLAC
SCLRVVFIPLFILCVYPSGMPALRHPAWPCIFSLLMGISNGYFGSVPMILAAGKVSPKQR
ELAGNTMTVSYMSGLTLGSAVAYCTYSLTRDAHGSCLHASTANGSILAGL
|
| External Links |
|---|
| GenBank ID Protein
| 100913034 |
| UniProtKB/Swiss-Prot ID
| Q7RTT9 |
| UniProtKB/Swiss-Prot Entry Name
| S29A4_HUMAN |
| PDB IDs
|
Not Available |
| GenBank Gene ID
| NM_001040661.1 |
| GeneCard ID
| SLC29A4 |
| GenAtlas ID
| SLC29A4 |
| HGNC ID
| HGNC:23097 |
| References |
|---|
| General References
| Not Available |