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Details on Person UniProt:Q8WUX1 SLC38A5

Class:IdReferenceGeneProduct:247152
_chainChangeLogchain:1-472 added on Sat February 7 2015
_displayNameUniProt:Q8WUX1 SLC38A5
_timestamp2025-02-21 19:32:26
chainchain:1-472
checksum2DDB4C03E5E78734
commentFUNCTION Symporter that cotransports neutral amino acids and sodium ions, coupled to an H(+) antiporter activity (PubMed:11243884). Releases L-glutamine and glycine from astroglial cells and may participate in the glutamate/GABA-L-glutamine cycle and the NMDA receptors activation (By similarity). In addition, contributes significantly to L-glutamine uptake in retina, namely in ganglion and Mueller cells therefore, participates in the retinal glutamate-glutamine cycle (By similarity). The transport activity is pH sensitive and Li(+) tolerant (PubMed:11243884). Moreover functions in both direction and is associated with large uncoupled fluxes of protons (By similarity). The transport is electroneutral coupled to the cotransport of 1 Na(+) and the antiport of 1 H(+) (By similarity). May have a particular importance for modulation of net hepatic glutamine flux (By similarity).CATALYTIC ACTIVITY L-serine(out) + Na(+)(out) + H(+)(in) = L-serine(in) + Na(+)(in) + H(+)(out)CATALYTIC ACTIVITY L-alanine(out) + Na(+)(out) + H(+)(in) = L-alanine(in) + Na(+)(in) + H(+)(out)CATALYTIC ACTIVITY glycine(out) + Na(+)(out) + H(+)(in) = glycine(in) + Na(+)(in) + H(+)(out)CATALYTIC ACTIVITY L-glutamine(out) + Na(+)(out) + H(+)(in) = L-glutamine(in) + Na(+)(in) + H(+)(out)CATALYTIC ACTIVITY L-asparagine(out) + Na(+)(out) + H(+)(in) = L-asparagine(in) + Na(+)(in) + H(+)(out)CATALYTIC ACTIVITY L-histidine(out) + Na(+)(out) + H(+)(in) = L-histidine(in) + Na(+)(in) + H(+)(out)CATALYTIC ACTIVITY L-cysteine(out) + Na(+)(out) + H(+)(in) = L-cysteine(in) + Na(+)(in) + H(+)(out)ACTIVITY REGULATION Not inhibited by lithium (PubMed:11243884). Partial allosteric regulation on ions sodium binding (By similarity).BIOPHYSICOCHEMICAL PROPERTIES Optimum pH is 8.0.SUBCELLULAR LOCATION Localized at astroglial membrane.ALTERNATIVE PRODUCTS Predominantly expressed in stomach, brain, liver, lung and intestinal tract.SIMILARITY Belongs to the amino acid/polyamine transporter 2 family.CAUTION Nakanishi et al (PubMed:11243884) shows that the transport process is electrogenic, contrary to the conclusions of Hamdani et al (PMID:11742981) who finds that the transport is electroneutral with a Na(+):L-glutamine stoichiometry of 1:1 (PubMed:11243884). Hamdani et al (PMID:11742981) shows that this electrogenic transport describes by Nakanishi et al. would correspond to large uncoupled fluxes of protons (PubMed:11243884).
created[InstanceEdit:217385] Schmidt, EE, 2008-03-27 06:23:53
descriptionrecommendedName: fullName evidence="8"Sodium-coupled neutral amino acid transporter 5 alternativeName: Solute carrier family 38 member 5 alternativeName: System N transporter 2
geneNameSLC38A5
JM24
SN2
SNAT5
PP7194
identifierQ8WUX1
isSequenceChangedFALSE
keywordAcetylation
Alternative splicing
Cell membrane
Disulfide bond
Glycoprotein
Membrane
Proteomics identification
Reference proteome
Transmembrane
Transmembrane helix
modified[InstanceEdit:9836292] Weiser, Joel, 2023-05-25
[InstanceEdit:9852000] Weiser, Joel, 2023-11-03
[InstanceEdit:9926675] Weiser, Joel, 2024-11-03
[InstanceEdit:9939033] Weiser, Joel, 2025-02-21
nameSLC38A5
referenceDatabase[ReferenceDatabase:2] UniProt
referenceGene[ReferenceDNASequence:9000297] ENSEMBL:ENSG00000017483 SLC38A5 [Homo sapiens]
secondaryIdentifierS38A5_HUMAN
B3KT20
B5MDE6
B7WPJ9
Q6PIW9
Q8WYU2
Q96PQ4
sequenceLength472
species[Species:48887] Homo sapiens
(isoformParent)[ReferenceIsoform:247153] UniProt:Q8WUX1-2 SLC38A5 [Homo sapiens]
[ReferenceIsoform:412097] UniProt:Q8WUX1-1 SLC38A5 [Homo sapiens]
(referenceEntity)[EntityWithAccessionedSequence:352167] SLC38A5 [plasma membrane] [Homo sapiens]
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