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SLC38A3
HPA
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  • SLC38A3
PROTEIN SUMMARY GENE INFORMATION RNA DATA ANTIBODY DATA
GENERAL INFORMATIONi

General description of the gene and the encoded protein(s) using information from HGNC and Ensembl, as well as predictions made by the Human Protein Atlas project.

Gene namei

Official gene symbol, which is typically a short form of the gene name, according to HGNC.

SLC38A3
Synonyms G17, SN1
Gene descriptioni

Full gene name according to HGNC.

Solute carrier family 38 member 3
Protein classi

Assigned HPA protein class(es) for the encoded protein(s).

Disease related genes
FDA approved drug targets
Human disease related genes
Metabolic proteins
Transporters
Predicted locationi

All transcripts of all genes have been analyzed regarding the location(s) of corresponding protein based on prediction methods for signal peptides and transmembrane regions.

  • Genes with at least one transcript predicted to encode a secreted protein, according to prediction methods or to UniProt location data, have been further annotated and classified with the aim to determine if the corresponding protein(s) are secreted or actually retained in intracellular locations or membrane-attached.

  • Remaining genes, with no transcript predicted to encode a secreted protein, will be assigned the prediction-based location(s).

The annotated location overrules the predicted location, so that a gene encoding a predicted secreted protein that has been annotated as intracellular will have intracellular as the final location.

Membrane, Intracellular
Protein evidence Evidence at protein level (all genes)
GENE INFORMATIONi

Gene information from Ensembl and Entrez, as well as links to available gene identifiers are displayed here. Information was retrieved from Ensembl if not indicated otherwise.

Chromosome 3
Cytoband p21.31
Chromosome location (bp) 50205246 - 50221486
Number of transcriptsi

Number of protein-coding transcripts from the gene as defined by Ensembl.

4
Ensembl ENSG00000188338 (version 109)
Entrez gene 10991
HGNC HGNC:18044
UniProt Q99624 (UniProt - Evidence at protein level)
neXtProt NX_Q99624
GeneCards SLC38A3
Antibodypedia SLC38A3 antibodies


PROTEIN FUNCTION
Protein function (UniProt)i

Useful information about the protein provided by UniProt.

Symporter that cotransports specific neutral amino acids and sodium ions, coupled to an H(+) antiporter activity 1. Mainly participates in the glutamate-GABA-glutamine cycle in brain where it transports L-glutamine from astrocytes in the intercellular space for the replenishment of both neurotransmitters glutamate and gamma-aminobutyric acid (GABA) in neurons and also functions as the major influx transporter in ganglion cells mediating the uptake of glutamine (By similarity). The transport activity is specific for L-glutamine, L-histidine and L-asparagine 2. The transport is electroneutral coupled to the cotransport of 1 Na(+) and the antiport of 1 H(+) (By similarity). The transport is pH dependent, saturable, Li(+) tolerant and functions in both direction depending on the concentration gradients of its substrates and cotransported ions 3. Also mediates an amino acid-gated H(+) conductance that is not stoichiometrically coupled to the amino acid transport but which influences the ionic gradients that drive the amino acid transport (By similarity). In addition, may play a role in nitrogen metabolism, amino acid homeostasis, glucose metabolism and renal ammoniagenesis (By similarity).... show less
Biological process (UniProt)i

Keywords assigned by UniProt to proteins because they are involved in a particular biological process.

Amino-acid transport, Antiport, Ion transport, Sodium transport, Symport, Transport
Ligand (UniProt)i

Keywords assigned by UniProt to proteins because they bind, are associated with, or whose activity is dependent of some molecule.

Sodium
Gene summary (Entrez)i

Useful information about the gene from Entrez

Enables L-amino acid transmembrane transporter activity. Involved in amino acid transport. Located in plasma membrane. [provided by Alliance of Genome Resources, Apr 2022]... show less
PROTEIN INFORMATIONi

The protein information section displays alternative protein-coding transcripts (splice variants) encoded by this gene according to the Ensembl database.

The Splice variant identifier links to the Ensembl website protein summary for the selected splice variant. The data in the Swissprot and TrEMBL columns links to corresponding pages in the UniProt database.

The protein classes assigned to this protein are shown if expanding the data in the protein class column. Parent protein classes are in bold font and subclasses are listed under the parent class.

The length of the protein (amino acid residues according to Ensembl), molecular mass (kDalton), predicted signal peptide and number of predicted transmembrane region(s) according to in-house majority decision methods based on sets of predictors are also reported.
Splice variant SwissProt TrEMBL Protein class Gene ontology Length & mass Signal peptide
(predicted)
Transmembrane regions
(predicted)
SLC38A3-204
ENSP00000480466
ENST00000445096
A0A087WWS5
[Direct mapping] Sodium-coupled neutral amino acid transporter 3
Show all
Metabolic proteins
Predicted membrane proteins
   Prediction method-based
   Membrane proteins predicted by MDM
   MEMSAT3 predicted membrane proteins
   MEMSAT-SVM predicted membrane proteins
   Phobius predicted membrane proteins
   SCAMPI predicted membrane proteins
   SPOCTOPUS predicted membrane proteins
   THUMBUP predicted membrane proteins
   TMHMM predicted membrane proteins
   # TM segments-based
   4TM proteins predicted by MDM
Human disease related genes
   Nervous system diseases
   Epilepsy
   DeepTMHMM predicted membrane proteins
Show all
GO:0016020 [membrane]
Show all
216 aa
24.6 kDa
No 4
SLC38A3-205
ENSP00000479737
ENST00000610458
A0A087WVW8
[Direct mapping] Sodium-coupled neutral amino acid transporter 3
Show all
Metabolic proteins
   SPOCTOPUS predicted membrane proteins
   TMHMM predicted membrane proteins
Predicted intracellular proteins
   Intracellular proteins predicted by MDM and MDSEC
Human disease related genes
   Nervous system diseases
   Epilepsy
   DeepTMHMM predicted membrane proteins
Show all
GO:0016020 [membrane]
Show all
96 aa
10.3 kDa
No 0
SLC38A3-206
ENSP00000481301
ENST00000614032
Q99624
[Direct mapping] Sodium-coupled neutral amino acid transporter 3
Show all
Metabolic proteins
Transporters
   Electrochemical Potential-driven transporters
Predicted membrane proteins
   Prediction method-based
   Membrane proteins predicted by MDM
   MEMSAT3 predicted membrane proteins
   MEMSAT-SVM predicted membrane proteins
   Phobius predicted membrane proteins
   SCAMPI predicted membrane proteins
   SPOCTOPUS predicted membrane proteins
   THUMBUP predicted membrane proteins
   TMHMM predicted membrane proteins
   # TM segments-based
   >9TM proteins predicted by MDM
Disease related genes
FDA approved drug targets
   Small molecule drugs
Human disease related genes
   Nervous system diseases
   Epilepsy
Mapped to neXtProt
   neXtProt - Evidence at protein level
Protein evidence (Kim et al 2014)
   DeepTMHMM predicted membrane proteins
Show all
GO:0003333 [amino acid transmembrane transport]
GO:0005290 [L-histidine transmembrane transporter activity]
GO:0005295 [neutral amino acid:sodium symporter activity]
GO:0005886 [plasma membrane]
GO:0006811 [ion transport]
GO:0006814 [sodium ion transport]
GO:0006865 [amino acid transport]
GO:0006867 [asparagine transport]
GO:0006868 [glutamine transport]
GO:0007420 [brain development]
GO:0007565 [female pregnancy]
GO:0010585 [glutamine secretion]
GO:0015171 [amino acid transmembrane transporter activity]
GO:0015179 [L-amino acid transmembrane transporter activity]
GO:0015180 [L-alanine transmembrane transporter activity]
GO:0015182 [L-asparagine transmembrane transporter activity]
GO:0015186 [L-glutamine transmembrane transporter activity]
GO:0015293 [symporter activity]
GO:0015297 [antiporter activity]
GO:0015808 [L-alanine transport]
GO:0015817 [histidine transport]
GO:0016020 [membrane]
GO:0016323 [basolateral plasma membrane]
GO:0016324 [apical plasma membrane]
GO:0051365 [cellular response to potassium ion starvation]
GO:0061402 [positive regulation of transcription from RNA polymerase II promoter in response to acidic pH]
GO:0080144 [amino acid homeostasis]
GO:0140830 [L-glutamine, sodium:proton antiporter activity]
GO:0140831 [L-asparagine, sodium:proton antiporter activity]
GO:0140832 [L-histidine, sodium:proton antiporter activity]
GO:0150104 [transport across blood-brain barrier]
GO:1902024 [L-histidine transport]
GO:1903803 [L-glutamine import across plasma membrane]
GO:1903810 [L-histidine import across plasma membrane]
GO:1903811 [L-asparagine import across plasma membrane]
GO:2000487 [positive regulation of glutamine transport]
Show all
504 aa
55.8 kDa
No >9
SLC38A3-208
ENSP00000484379
ENST00000621456
A0A087X1Q4
[Direct mapping] Sodium-coupled neutral amino acid transporter 3
Show all
Metabolic proteins
Predicted membrane proteins
   Prediction method-based
   Membrane proteins predicted by MDM
   MEMSAT3 predicted membrane proteins
   Phobius predicted membrane proteins
   SPOCTOPUS predicted membrane proteins
   TMHMM predicted membrane proteins
   # TM segments-based
   1TM proteins predicted by MDM
Human disease related genes
   Nervous system diseases
   Epilepsy
Show all
GO:0016020 [membrane]
Show all
99 aa
10.6 kDa
No 1

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