UniProtKB - O88576 (S6A18_MOUSE)
Sodium-dependent neutral amino acid transporter B(0)AT3
Slc6a18
Functioni
Caution
Kineticsi
- KM=0.79 mM for L-alanine (in the presence of CLTRN)1 Publication
- KM=0.14 mM for L-alanine (in the presence of ACE2)1 Publication
- KM=0.99 mM for L-glycine (in the presence of CLTRN)1 Publication
- KM=0.27 mM for L-glycine (in the presence of ACE2)1 Publication
GO - Molecular functioni
- neurotransmitter:sodium symporter activity Source: InterPro
- neutral amino acid transmembrane transporter activity Source: UniProtKB
GO - Biological processi
- amino acid transmembrane transport Source: MGI
Keywordsi
Biological process | Amino-acid transport, Neurotransmitter transport, Symport, Transport |
Enzyme and pathway databases
Reactomei | R-MMU-352230 Amino acid transport across the plasma membrane R-MMU-442660 Na+/Cl- dependent neurotransmitter transporters |
Names & Taxonomyi
Protein namesi | Recommended name: Sodium-dependent neutral amino acid transporter B(0)AT31 PublicationAlternative name(s): Sodium- and chloride-dependent transporter XTRP2 Solute carrier family 6 member 18 System B(0) neutral amino acid transporter AT3 |
Gene namesi | Name:Slc6a18 Synonyms:Xt21 Publication, Xtrp2 |
Organismi | Mus musculus (Mouse) |
Taxonomic identifieri | 10090 [NCBI] |
Taxonomic lineagei | Eukaryota › Metazoa › Chordata › Craniata › Vertebrata › Euteleostomi › Mammalia › Eutheria › Euarchontoglires › Glires › Rodentia › Myomorpha › Muroidea › Muridae › Murinae › Mus › Mus |
Proteomesi |
|
Organism-specific databases
MGIi | MGI:1336892 Slc6a18 |
Subcellular locationi
Plasma membrane
- Apical cell membrane 1 Publication; Multi-pass membrane protein Sequence analysis
- Cell membrane 1 Publication; Multi-pass membrane protein Sequence analysis
Note: In kidneys localizes to the apical membrane in distal segments of the proximal tubule.1 Publication
Plasma Membrane
- apical plasma membrane Source: UniProtKB
- brush border membrane Source: MGI
- integral component of plasma membrane Source: InterPro
- plasma membrane Source: UniProtKB
Topology
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Topological domaini | 1 – 26 | CytoplasmicSequence analysisAdd BLAST | 26 | |
Transmembranei | 27 – 47 | Helical; Name=1Sequence analysisAdd BLAST | 21 | |
Topological domaini | 48 – 52 | ExtracellularSequence analysis | 5 | |
Transmembranei | 53 – 73 | Helical; Name=2Sequence analysisAdd BLAST | 21 | |
Topological domaini | 74 – 105 | CytoplasmicSequence analysisAdd BLAST | 32 | |
Transmembranei | 106 – 126 | Helical; Name=3Sequence analysisAdd BLAST | 21 | |
Topological domaini | 127 – 177 | ExtracellularSequence analysisAdd BLAST | 51 | |
Transmembranei | 178 – 198 | Helical; Name=4Sequence analysisAdd BLAST | 21 | |
Topological domaini | 199 – 206 | CytoplasmicSequence analysis | 8 | |
Transmembranei | 207 – 227 | Helical; Name=5Sequence analysisAdd BLAST | 21 | |
Topological domaini | 228 – 255 | ExtracellularSequence analysisAdd BLAST | 28 | |
Transmembranei | 256 – 276 | Helical; Name=6Sequence analysisAdd BLAST | 21 | |
Topological domaini | 277 – 288 | CytoplasmicSequence analysisAdd BLAST | 12 | |
Transmembranei | 289 – 309 | Helical; Name=7Sequence analysisAdd BLAST | 21 | |
Topological domaini | 310 – 397 | ExtracellularSequence analysisAdd BLAST | 88 | |
Transmembranei | 398 – 418 | Helical; Name=8Sequence analysisAdd BLAST | 21 | |
Topological domaini | 419 – 441 | CytoplasmicSequence analysisAdd BLAST | 23 | |
Transmembranei | 442 – 462 | Helical; Name=9Sequence analysisAdd BLAST | 21 | |
Topological domaini | 463 – 472 | ExtracellularSequence analysis | 10 | |
Transmembranei | 473 – 493 | Helical; Name=10Sequence analysisAdd BLAST | 21 | |
Topological domaini | 494 – 520 | CytoplasmicSequence analysisAdd BLAST | 27 | |
Transmembranei | 521 – 541 | Helical; Name=11Sequence analysisAdd BLAST | 21 | |
Topological domaini | 542 – 570 | ExtracellularSequence analysisAdd BLAST | 29 | |
Transmembranei | 571 – 591 | Helical; Name=12Sequence analysisAdd BLAST | 21 | |
Topological domaini | 592 – 615 | CytoplasmicSequence analysisAdd BLAST | 24 |
Keywords - Cellular componenti
Cell membrane, MembranePathology & Biotechi
Disruption phenotypei
Mutagenesis
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Mutagenesisi | 21 | D → N: No effect on protein abundance. Increases localization to the cell membrane. Increases alanine uptake activity. 1 Publication | 1 | |
Mutagenesisi | 25 | Q → D: No effect on protein abundance. Almost complete loss of cell surface localization. Decreases alanine uptake activity. 1 Publication | 1 | |
Mutagenesisi | 25 | Q → V: No effect on protein abundance. Strong decrease of cell surface localization. Decreases alanine uptake. 1 Publication | 1 | |
Mutagenesisi | 50 | H → Y: No effect on protein abundance. No effect on cell surface localization. Increases alanine uptake activity. 1 Publication | 1 | |
Mutagenesisi | 72 | Y → H: No effect on protein abundance. No effect on cell surface localization. No effect on alanine uptake activity. 1 Publication | 1 | |
Mutagenesisi | 78 | G → S: No effect on protein abundance. No effect on cell surface expression. Decreases alanine uptake activity. 1 Publication | 1 | |
Mutagenesisi | 90 | K → T: No effect on protein abundance. No effect on cell surface localization. No effect on alanine uptake activity. 1 Publication | 1 | |
Mutagenesisi | 158 | S → D: No effect on protein abundance. No effect on cell surface localization. No effect on alanine uptake activity. 1 Publication | 1 | |
Mutagenesisi | 213 | L → W: No effect on protein abundance. No effect on cell surface localization. Decreases alanine uptake activity. 1 Publication | 1 | |
Mutagenesisi | 225 | R → T: No effect on protein abundance. Strong decreases of cell surface localization. Decreases alanine uptake. 1 Publication | 1 | |
Mutagenesisi | 283 | N → D: No effect on protein abundance. Strong decreases of cell surface localization. Decreases alanine uptake. 1 Publication | 1 | |
Mutagenesisi | 287 | D → K: No effect on protein abundance. Strong decreases of cell surface localization. Decreases alanine uptake. 1 Publication | 1 | |
Mutagenesisi | 287 | D → N: No effect on protein abundance. Strong decreases of cell surface localization. Decreases alanine uptake activity. 1 Publication | 1 | |
Mutagenesisi | 296 | S → R: No effect on protein abundance. Strong decreases of cell surface localization. Decreases alanine uptake activity. 1 Publication | 1 | |
Mutagenesisi | 297 | M → C: No effect on protein abundance. No effect on cell surface localization. No effect on alanine uptake activity. 1 Publication | 1 | |
Mutagenesisi | 297 | M → S: No effect on protein abundance. No effect on cell surface localization. No effect on alanine uptake activity. 1 Publication | 1 | |
Mutagenesisi | 456 | I → T: No effect on protein abundance. No effect on cell surface localization. No effect on alanine uptake activity. 1 Publication | 1 | |
Mutagenesisi | 464 | G → N: No effect on protein abundance. No effect on cell surface localization. No effect on alanine uptake activity. 1 Publication | 1 | |
Mutagenesisi | 477 | L → P: No effect on protein abundance. No effect on cell surface localization. No effect on alanine uptake activity. 1 Publication | 1 | |
Mutagenesisi | 495 | G → R: No effect on protein abundance. Strong decreases of cell surface localization. Decreases alanine uptake activity. 1 Publication | 1 | |
Mutagenesisi | 502 | D → N: Decreases protein abundance. Strong decreases of cell surface localization. Strong decreases on alanine uptake activity. 1 Publication | 1 | |
Mutagenesisi | 568 | Q → R: No effect on protein abundance. No effect on cell surface localization. No effect on alanine uptake activity. 1 Publication | 1 |
PTM / Processingi
Molecule processing
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
ChainiPRO_0000214807 | 1 – 615 | Sodium-dependent neutral amino acid transporter B(0)AT3Add BLAST | 615 |
Amino acid modifications
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Glycosylationi | 353 | N-linked (GlcNAc...) asparagineSequence analysis | 1 |
Keywords - PTMi
GlycoproteinProteomic databases
jPOSTi | O88576 |
PaxDbi | O88576 |
PRIDEi | O88576 |
PTM databases
iPTMneti | O88576 |
PhosphoSitePlusi | O88576 |
Expressioni
Tissue specificityi
Gene expression databases
Bgeei | ENSMUSG00000021612 Expressed in 69 organ(s), highest expression level in adult mammalian kidney |
ExpressionAtlasi | O88576 baseline and differential |
Genevisiblei | O88576 MM |
Interactioni
Subunit structurei
Interacts with CLTRN; this interaction regulates the trafficking of SLC6A18 to the cell membrane and its activity.
2 PublicationsProtein-protein interaction databases
DIPi | DIP-60421N |
IntActi | O88576, 1 interactor |
STRINGi | 10090.ENSMUSP00000022105 |
Family & Domainsi
Sequence similaritiesi
Keywords - Domaini
Transmembrane, Transmembrane helixPhylogenomic databases
eggNOGi | KOG3659 Eukaryota COG0733 LUCA |
GeneTreei | ENSGT00940000158906 |
InParanoidi | O88576 |
KOi | K05048 |
OMAi | VAWVLWY |
OrthoDBi | 547281at2759 |
PhylomeDBi | O88576 |
TreeFami | TF343812 |
Family and domain databases
CDDi | cd11517 SLC6sbd_B0AT3, 1 hit |
InterProi | View protein in InterPro IPR042701 B0AT3_SLC6sbd IPR000175 Na/ntran_symport IPR002438 Neutral_aa_SLC6 IPR037272 SNS_sf |
PANTHERi | PTHR11616 PTHR11616, 1 hit |
Pfami | View protein in Pfam PF00209 SNF, 1 hit |
PRINTSi | PR00176 NANEUSMPORT PR01206 ORPHTRNSPORT |
SUPFAMi | SSF161070 SSF161070, 1 hit |
PROSITEi | View protein in PROSITE PS00610 NA_NEUROTRAN_SYMP_1, 1 hit PS00754 NA_NEUROTRAN_SYMP_2, 1 hit PS50267 NA_NEUROTRAN_SYMP_3, 1 hit |
s (6+)i Sequence
Sequence statusi: Complete.
This entry describes 6 produced by isoformsialternative splicing. AlignAdd to basketThis entry has 6 described isoforms and 4 potential isoforms that are computationally mapped.Show allAlign All
This isoform has been chosen as the sequence. All positional information in this entry refers to it. This is also the sequence that appears in the downloadable versions of the entry. canonicali
10 20 30 40 50
MAQASGMDPL VDIEDERPKW DNKLQYLLSC IGFAVGLGNI WRFPYLCQTH
60 70 80 90 100
GGGAFLIPYF IALVFEGIPL FYIELAIGQR LRRGSIGVWK TISPYLGGVG
110 120 130 140 150
LGCFSVSFLV SLYYNTVLLW VLWFFLNSFQ HPLPWSTCPL DLNRTGFVQE
160 170 180 190 200
CQSSGTVSYF WYRQTLNITS DISNTGTIQW KLFLCLVACW STVYLCVIRG
210 220 230 240 250
IESTGKVIYF TALFPYLVLT IFLIRGLTLP GATEGLIYLF TPNMKTLQNP
260 270 280 290 300
RVWLDAATQI FFSLSLAFGG HIAFASYNPP RNNCEKDAVI IALVNSMTSL
310 320 330 340 350
YASIAIFSVM GFKASNDYGR CLDRNILSLI NEFDLPELSI SRDEYPSVLM
360 370 380 390 400
YLNATQTARV AQLPLKTCHL EDFLDKSASG PGLAFIVFTE AVLHMPGASV
410 420 430 440 450
WSVLFFGMLF TLGLSSMFGN MEGVITPLLD MGILPKGIPK EVMTGVICFA
460 470 480 490 500
CFLSAICFTL QSGGYWLEIF DSFAASLNLI IFAFMEVVGV IHIYGMKRFC
510 520 530 540 550
DDIEWMTGRR PGLYWQVTWR VVSPMLLFGI FLSYIVLLIQ TPPSYKAWNP
560 570 580 590 600
QYEHFPSREE KFYPGWVQVT CVLLSFLPSL WVPGVALAQL LSQYKQRWKA
610
THLESGLKLQ ESRGC
The sequence of this isoform differs from the canonical sequence as follows:
377-444: SASGPGLAFI...PKGIPKEVMT → PTWKQISGARVLGEGCARLTSRVCEASVLP
499-552: FCDDIEWMTG...PSYKAWNPQY → NIFPQERRSS...GGRLRIWKVV
553-615: Missing.
Computationally mapped potential isoform sequencesi
There are 4 potential isoforms mapped to this entry.BLASTAlignShow allAdd to basketA0A217FL56 | A0A217FL56_MOUSE | Transporter | Slc6a18 mCG_20942 | 542 | Annotation score: | ||
A0A1Y7VJ53 | A0A1Y7VJ53_MOUSE | Transporter | Slc6a18 | 109 | Annotation score: | ||
A0A1Y7VJY3 | A0A1Y7VJY3_MOUSE | Transporter | Slc6a18 | 211 | Annotation score: | ||
A0A1Y7VMA5 | A0A1Y7VMA5_MOUSE | Sodium-dependent neutral amino acid... | Slc6a18 | 26 | Annotation score: |
Alternative sequence
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Alternative sequenceiVSP_050364 | 377 – 444 | SASGP…KEVMT → PTWKQISGARVLGEGCARLT SRVCEASVLP in isoform 3 and isoform 5. 2 PublicationsAdd BLAST | 68 | |
Alternative sequenceiVSP_050363 | 377 – 422 | SASGP…FGNME → VLLCGLCSSLGCCLPWVCPP CLGTWRVSLHHYWTWGSYPK VYPRRS in isoform 6. 1 PublicationAdd BLAST | 46 | |
Alternative sequenceiVSP_050697 | 423 – 615 | Missing in isoform 6. 1 PublicationAdd BLAST | 193 | |
Alternative sequenceiVSP_050365 | 445 – 454 | Missing in isoform 2. 1 Publication | 10 | |
Alternative sequenceiVSP_050366 | 499 – 552 | FCDDI…WNPQY → NIFPQERRSSTQAGCRSPVC SCPSCPHCGSLELLWLSYCP STNRGGRLRIWKVV in isoform 4 and isoform 5. 1 PublicationAdd BLAST | 54 | |
Alternative sequenceiVSP_050367 | 553 – 615 | Missing in isoform 4 and isoform 5. 1 PublicationAdd BLAST | 63 |
Sequence databases
Select the link destinations: EMBLi GenBanki DDBJi Links Updated | AF075262 mRNA Translation: AAC27757.1 AF075263 mRNA Translation: AAC27758.1 AF075264 mRNA Translation: AAC27759.1 AF075265 mRNA Translation: AAC27760.1 AF075266 mRNA Translation: AAC27761.1 AF075267 mRNA Translation: AAC27762.1 BC010748 mRNA Translation: AAH10748.1 |
CCDSi | CCDS36727.1 [O88576-1] CCDS49311.1 [O88576-3] CCDS49312.1 [O88576-4] |
RefSeqi | NP_001035782.1, NM_001040692.3 [O88576-1] NP_001129559.1, NM_001136087.2 [O88576-3] NP_001162115.1, NM_001168644.1 [O88576-4] NP_001162116.1, NM_001168645.1 [O88576-5] NP_001162117.1, NM_001168646.1 [O88576-2] |
Genome annotation databases
Ensembli | ENSMUST00000109679; ENSMUSP00000105301; ENSMUSG00000021612 [O88576-4] ENSMUST00000109680; ENSMUSP00000105302; ENSMUSG00000021612 [O88576-3] ENSMUST00000220650; ENSMUSP00000152403; ENSMUSG00000021612 [O88576-5] ENSMUST00000222029; ENSMUSP00000152525; ENSMUSG00000021612 [O88576-1] ENSMUST00000223026; ENSMUSP00000152516; ENSMUSG00000021612 [O88576-6] ENSMUST00000223074; ENSMUSP00000152146; ENSMUSG00000021612 [O88576-2] |
GeneIDi | 22598 |
KEGGi | mmu:22598 |
UCSCi | uc007rds.2 mouse [O88576-1] uc007rdt.2 mouse [O88576-2] uc007rdu.2 mouse [O88576-3] uc007rdv.2 mouse [O88576-4] uc007rdw.2 mouse [O88576-5] |
Keywords - Coding sequence diversityi
Alternative splicingSimilar proteinsi
Cross-referencesi
Sequence databases
Select the link destinations: EMBLi GenBanki DDBJi Links Updated | AF075262 mRNA Translation: AAC27757.1 AF075263 mRNA Translation: AAC27758.1 AF075264 mRNA Translation: AAC27759.1 AF075265 mRNA Translation: AAC27760.1 AF075266 mRNA Translation: AAC27761.1 AF075267 mRNA Translation: AAC27762.1 BC010748 mRNA Translation: AAH10748.1 |
CCDSi | CCDS36727.1 [O88576-1] CCDS49311.1 [O88576-3] CCDS49312.1 [O88576-4] |
RefSeqi | NP_001035782.1, NM_001040692.3 [O88576-1] NP_001129559.1, NM_001136087.2 [O88576-3] NP_001162115.1, NM_001168644.1 [O88576-4] NP_001162116.1, NM_001168645.1 [O88576-5] NP_001162117.1, NM_001168646.1 [O88576-2] |
3D structure databases
ModBasei | Search... |
SWISS-MODEL-Workspacei | Submit a new modelling project... |
Protein-protein interaction databases
DIPi | DIP-60421N |
IntActi | O88576, 1 interactor |
STRINGi | 10090.ENSMUSP00000022105 |
PTM databases
iPTMneti | O88576 |
PhosphoSitePlusi | O88576 |
Proteomic databases
jPOSTi | O88576 |
PaxDbi | O88576 |
PRIDEi | O88576 |
Genome annotation databases
Ensembli | ENSMUST00000109679; ENSMUSP00000105301; ENSMUSG00000021612 [O88576-4] ENSMUST00000109680; ENSMUSP00000105302; ENSMUSG00000021612 [O88576-3] ENSMUST00000220650; ENSMUSP00000152403; ENSMUSG00000021612 [O88576-5] ENSMUST00000222029; ENSMUSP00000152525; ENSMUSG00000021612 [O88576-1] ENSMUST00000223026; ENSMUSP00000152516; ENSMUSG00000021612 [O88576-6] ENSMUST00000223074; ENSMUSP00000152146; ENSMUSG00000021612 [O88576-2] |
GeneIDi | 22598 |
KEGGi | mmu:22598 |
UCSCi | uc007rds.2 mouse [O88576-1] uc007rdt.2 mouse [O88576-2] uc007rdu.2 mouse [O88576-3] uc007rdv.2 mouse [O88576-4] uc007rdw.2 mouse [O88576-5] |
Organism-specific databases
CTDi | 348932 |
MGIi | MGI:1336892 Slc6a18 |
Phylogenomic databases
eggNOGi | KOG3659 Eukaryota COG0733 LUCA |
GeneTreei | ENSGT00940000158906 |
InParanoidi | O88576 |
KOi | K05048 |
OMAi | VAWVLWY |
OrthoDBi | 547281at2759 |
PhylomeDBi | O88576 |
TreeFami | TF343812 |
Enzyme and pathway databases
Reactomei | R-MMU-352230 Amino acid transport across the plasma membrane R-MMU-442660 Na+/Cl- dependent neurotransmitter transporters |
Miscellaneous databases
ChiTaRSi | Slc6a18 mouse |
PROi | PR:O88576 |
SOURCEi | Search... |
Gene expression databases
Bgeei | ENSMUSG00000021612 Expressed in 69 organ(s), highest expression level in adult mammalian kidney |
ExpressionAtlasi | O88576 baseline and differential |
Genevisiblei | O88576 MM |
Family and domain databases
CDDi | cd11517 SLC6sbd_B0AT3, 1 hit |
InterProi | View protein in InterPro IPR042701 B0AT3_SLC6sbd IPR000175 Na/ntran_symport IPR002438 Neutral_aa_SLC6 IPR037272 SNS_sf |
PANTHERi | PTHR11616 PTHR11616, 1 hit |
Pfami | View protein in Pfam PF00209 SNF, 1 hit |
PRINTSi | PR00176 NANEUSMPORT PR01206 ORPHTRNSPORT |
SUPFAMi | SSF161070 SSF161070, 1 hit |
PROSITEi | View protein in PROSITE PS00610 NA_NEUROTRAN_SYMP_1, 1 hit PS00754 NA_NEUROTRAN_SYMP_2, 1 hit PS50267 NA_NEUROTRAN_SYMP_3, 1 hit |
ProtoNeti | Search... |
MobiDBi | Search... |
Entry informationi
Entry namei | S6A18_MOUSE | |
Accessioni | O88576Primary (citable) accession number: O88576 Secondary accession number(s): O88577 Q91XG6 | |
Entry historyi | Integrated into UniProtKB/Swiss-Prot: | March 29, 2004 |
Last sequence update: | November 1, 1998 | |
Last modified: | October 16, 2019 | |
This is version 135 of the entry and version 1 of the sequence. See complete history. | ||
Entry statusi | Reviewed (UniProtKB/Swiss-Prot) | |
Annotation program | Chordata Protein Annotation Program |
Miscellaneousi
Keywords - Technical termi
Complete proteome, Reference proteomeDocuments
- SIMILARITY comments
Index of protein domains and families - MGD cross-references
Mouse Genome Database (MGD) cross-references in UniProtKB/Swiss-Prot