Q9UM01 (YLAT1_HUMAN) Reviewed, UniProtKB/Swiss-Prot
Last modified
May 1, 2013.
Version 124.
History...
Names·Attributes·General annotation·Ontologies·Sequence annotation·Sequences·References·Web links·Cross-refs·Entry info·DocumentsCustomize order
Names·Attributes·General annotation·Ontologies·Sequence annotation·Sequences·References·Web links·Cross-refs·Entry info·DocumentsCustomize orderNames and origin
| Protein names | Recommended name: Y+L amino acid transporter 1 Alternative name(s): Monocyte amino acid permease 2 Short name=MOP-2 Solute carrier family 7 member 7 y(+)L-type amino acid transporter 1 Short name=Y+LAT1 Short name=y+LAT-1 | ||
| Gene names |
| ||
| Organism | Homo sapiens (Human) [Reference proteome] | ||
| Taxonomic identifier | 9606 [NCBI] | ||
| Taxonomic lineage | Eukaryota › Metazoa › Chordata › Craniata › Vertebrata › Euteleostomi › Mammalia › Eutheria › Euarchontoglires › Primates › Haplorrhini › Catarrhini › Hominidae › Homo![]() |
Protein attributes
| Sequence length | 511 AA. |
| Sequence status | Complete. |
| Protein existence | Evidence at protein level |
General annotation (Comments)
| Function | Involved in the sodium-independent uptake of dibasic amino acids and sodium-dependent uptake of some neutral amino acids. Requires coexpression with SLC3A2/4F2hc to mediate the uptake of arginine, leucine and glutamine. Plays a role in nitric oxide synthesis in human umbilical vein endothelial cells (HUVECs) via transport of L-arginine. Involved in the transport of L-arginine in monocytes. Ref.1 Ref.2 Ref.13 Ref.14 Ref.15 |
| Enzyme regulation | Arginine transport is inhibited by protein kinase C (PKC) and treatment with phorbol-12-myristate-13-acetate (PMA). |
| Subunit structure | Disulfide-linked heterodimer with the amino acid transport protein SLC3A2/4F2hc. Ref.1 Ref.2 |
| Subcellular location | Basolateral cell membrane; Multi-pass membrane protein Ref.21. |
| Tissue specificity | Highest expression in kidney and peripheral blood leukocytes. Weaker expression is observed in lung, heart, placenta, spleen, testis and small intestine. Expressed in normal fibroblasts and those from LPI patients. Also expressed in HUVECs, monocytes, retinal pigment epithelial cells, and various carcinoma cell lines, with highest expression in a colon-carcinoma cell line. Ref.1 Ref.3 Ref.11 Ref.12 Ref.14 Ref.15 Ref.16 |
| Induction | Expression is stimulated and enhanced by IFNG/IFN-gamma. Ref.14 |
| Involvement in disease | Lysinuric protein intolerance (LPI) [MIM:222700]: A metabolic disorder characterized by increased renal excretion of cationic amino acid (CAA), reduced CAA absorption from intestine, and orotic aciduria. On a normal diet, LPI patients present poor feeding, vomiting, diarrhea, episodes of hyperammoniaemic coma and growth retardation. Hepatosplenomegaly, osteoporosis and a life-threatening pulmonary involvement (alveolar proteinosis) are also seen. Biochemically LPI is characterized by defective transport of dibasic amino acids at the basolateral membrane of epithelial cells in kidney and intestine. |
| Sequence similarities | Belongs to the amino acid-polyamine-organocation (APC) superfamily. L-type amino acid transporter (LAT) (TC 2.A.3.8) family. [View classification] |
| Biophysicochemical properties | Kinetic parameters: KM=31.7 µM for L-leucine (in the presence of 0.1 M NaCl) Ref.2 KM=16.2 µM for L-leucine (in the presence of 0.1 M LiCl) |
| Sequence caution | The sequence BAA95120.1 differs from that shown. Reason: Erroneous gene model prediction. The sequence CAD62619.1 differs from that shown. Reason: Erroneous initiation. |
Ontologies
Sequence annotation (Features)
| Feature key | Position(s) | Length | Description | Graphical view | Feature identifier | ||||
Molecule processing | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Chain | 1 – 511 | 511 | Y+L amino acid transporter 1 | PRO_0000054281 | |||||
Regions | |||||||||
| Transmembrane | 37 – 57 | 21 | Helical; Potential | ||||||
| Transmembrane | 69 – 89 | 21 | Helical; Potential | ||||||
| Transmembrane | 107 – 127 | 21 | Helical; Potential | ||||||
| Transmembrane | 133 – 153 | 21 | Helical; Potential | ||||||
| Transmembrane | 160 – 180 | 21 | Helical; Potential | ||||||
| Transmembrane | 186 – 206 | 21 | Helical; Potential | ||||||
| Transmembrane | 222 – 242 | 21 | Helical; Potential | ||||||
| Transmembrane | 259 – 279 | 21 | Helical; Potential | ||||||
| Transmembrane | 304 – 324 | 21 | Helical; Potential | ||||||
| Transmembrane | 383 – 403 | 21 | Helical; Potential | ||||||
| Transmembrane | 416 – 436 | 21 | Helical; Potential | ||||||
| Transmembrane | 441 – 461 | 21 | Helical; Potential | ||||||
Amino acid modifications | |||||||||
| Glycosylation | 325 | 1 | N-linked (GlcNAc...) Potential | ||||||
Natural variations | |||||||||
| Natural variant | 5 | 1 | T → I in LPI. Ref.24 | VAR_039092 | |||||
| Natural variant | 36 | 1 | Missing in LPI; failed to induce cationic amino acid transport activity. Ref.24 | VAR_039093 | |||||
| Natural variant | 50 | 1 | M → K in LPI; failed to induce cationic amino acid transport activity. Ref.22 Ref.24 | VAR_030595 | |||||
| Natural variant | 53 | 1 | S → L in LPI. Ref.24 | VAR_039094 | |||||
| Natural variant | 54 | 1 | G → V in LPI; failed to induce cationic amino acid transport activity. Ref.19 Ref.24 | VAR_010261 | |||||
| Natural variant | 91 | 1 | A → V. Ref.6 Corresponds to variant rs11568438 [ dbSNP | Ensembl ]. | VAR_039095 | |||||
| Natural variant | 124 | 1 | L → P in LPI. Ref.24 | VAR_039096 | |||||
| Natural variant | 140 | 1 | A → P in LPI. Ref.24 | VAR_039097 | |||||
| Natural variant | 152 | 1 | F → L in LPI; moderately reduced cationic amino acid transport activity. Ref.21 Ref.24 | VAR_039098 | |||||
| Natural variant | 159 | 1 | R → C. Corresponds to variant rs11568437 [ dbSNP | Ensembl ]. | VAR_039099 | |||||
| Natural variant | 188 | 1 | T → I in LPI; failed to induce cationic amino acid transport activity. Ref.22 Ref.24 | VAR_030596 | |||||
| Natural variant | 191 | 1 | K → E in LPI. Ref.24 | VAR_039100 | |||||
| Natural variant | 238 | 1 | S → F in LPI. Ref.20 Ref.24 | VAR_030597 | |||||
| Natural variant | 251 | 1 | E → D in LPI. Ref.24 | VAR_039101 | |||||
| Natural variant | 261 | 1 | L → P in LPI. Ref.24 | VAR_039102 | |||||
| Natural variant | 333 | 1 | R → M in LPI. Ref.22 Ref.24 | VAR_030598 | |||||
| Natural variant | 334 | 1 | L → R in LPI; failed to induce cationic amino acid transport activity. Ref.1 Ref.17 Ref.19 Ref.24 | VAR_010262 | |||||
| Natural variant | 338 | 1 | G → D in LPI. Ref.19 Ref.24 | VAR_010999 | |||||
| Natural variant | 365 | 1 | N → Y in LPI. Ref.24 | VAR_039103 | |||||
| Natural variant | 386 | 1 | S → R in LPI; failed to induce cationic amino acid transport activity. Ref.18 Ref.22 Ref.24 | VAR_011000 | |||||
| Natural variant | 413 | 1 | P → S in a breast cancer sample; somatic mutation. Ref.23 | VAR_036609 | |||||
| Natural variant | 489 | 1 | S → P in LPI. Ref.20 Ref.24 | VAR_030599 | |||||
Sequences
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References
| « Hide 'large scale' references | |
| [1] | "Identification and characterization of a membrane protein (y+L amino acid transporter-1) that associates with 4F2hc to encode the amino acid transport activity y+L. A candidate gene for lysinuric protein intolerance." Torrents D., Estevez R., Pineda M., Fernandez E., Lloberas J., Shi Y.-B., Zorzano A., Palacin M. J. Biol. Chem. 273:32437-32445(1998) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [MRNA], FUNCTION, SUBUNIT, TISSUE SPECIFICITY, VARIANT LPI ARG-334. |
| [2] | "Amino acid transport of y+L-type by heterodimers of 4F2hc/CD98 and members of the glycoprotein-associated amino acid transporter family." Pfeiffer R., Rossier G., Spindler B., Meier C., Kuehn L.C., Verrey F. EMBO J. 18:49-57(1999) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [MRNA], FUNCTION, BIOPHYSICOCHEMICAL PROPERTIES, SUBUNIT. Tissue: Testis. |
| [3] | "SLC7A7, encoding a putative permease-related protein, is mutated in patients with lysinuric protein intolerance." Borsani G., Bassi M.T., Sperandeo M.P., De Grandi A., Buoninconti A., Riboni M., Manzoni M., Incerti B., Pepe A., Andria G., Ballabio A., Sebastio G. Nat. Genet. 21:297-301(1999) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [MRNA], TISSUE SPECIFICITY. Tissue: Placenta. |
| [4] | "SLC7A7 genomic structure and novel variants in three Japanese lysinuric protein intolerance families." Noguchi A., Shoji Y., Koizumi A., Takahashi T., Shoji Y., Matsumori M., Kayo T., Ohata T., Wada Y., Yoshimura I., Maisawa S., Konishi M., Takasago Y., Takada G. Hum. Mutat. 15:367-372(2000) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA]. |
| [5] | "Molecular and biological characterization of a novel monocyte amino acid permease, MOP-2." Takayama K., Yoshimoto M. Submitted (FEB-1998) to the EMBL/GenBank/DDBJ databases Cited for: NUCLEOTIDE SEQUENCE [MRNA]. |
| [6] | "Characterization of a human system y+L amino acid transporter." Fukasawa Y., Segawa H., Endou H., Kanai Y. Submitted (NOV-1998) to the EMBL/GenBank/DDBJ databases Cited for: NUCLEOTIDE SEQUENCE [MRNA], VARIANT VAL-91. Tissue: Kidney. |
| [7] | "Full-length cDNA libraries and normalization." Li W.B., Gruber C., Jessee J., Polayes D. Submitted (FEB-2003) to the EMBL/GenBank/DDBJ databases Cited for: NUCLEOTIDE SEQUENCE [MRNA]. Tissue: B-cell and Placenta. |
| [8] | "Complete sequencing and characterization of 21,243 full-length human cDNAs." Ota T., Suzuki Y., Nishikawa T., Otsuki T., Sugiyama T., Irie R., Wakamatsu A., Hayashi K., Sato H., Nagai K., Kimura K., Makita H., Sekine M., Obayashi M., Nishi T., Shibahara T., Tanaka T., Ishii S. Sugano S.Nat. Genet. 36:40-45(2004) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA]. Tissue: Umbilical cord blood. |
| [9] | Mural R.J., Istrail S., Sutton G.G., Florea L., Halpern A.L., Mobarry C.M., Lippert R., Walenz B., Shatkay H., Dew I., Miller J.R., Flanigan M.J., Edwards N.J., Bolanos R., Fasulo D., Halldorsson B.V., Hannenhalli S., Turner R. Venter J.C.Submitted (SEP-2005) to the EMBL/GenBank/DDBJ databases Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. |
| [10] | "The status, quality, and expansion of the NIH full-length cDNA project: the Mammalian Gene Collection (MGC)." The MGC Project Team Genome Res. 14:2121-2127(2004) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA]. Tissue: Placenta. |
| [11] | "Arginine transport through system y(+)L in cultured human fibroblasts: normal phenotype of cells from LPI subjects." Dall'Asta V., Bussolati O., Sala R., Rotoli B.M., Sebastio G., Sperandeo M.P., Andria G., Gazzola G.C. Am. J. Physiol. 279:C1829-C1837(2000) [PubMed] [Europe PMC] [Abstract] Cited for: TISSUE SPECIFICITY. |
| [12] | "Two-way arginine transport in human endothelial cells: TNF-alpha stimulation is restricted to system y(+)." Sala R., Rotoli B.M., Colla E., Visigalli R., Parolari A., Bussolati O., Gazzola G.C., Dall'Asta V. Am. J. Physiol. 282:C134-C143(2002) [PubMed] [Europe PMC] [Abstract] Cited for: TISSUE SPECIFICITY. |
| [13] | "Nitric oxide synthesis requires activity of the cationic and neutral amino acid transport system y+L in human umbilical vein endothelium." Arancibia-Garavilla Y., Toledo F., Casanello P., Sobrevia L. Exp. Physiol. 88:699-710(2003) [PubMed] [Europe PMC] [Abstract] Cited for: FUNCTION. |
| [14] | "INFgamma stimulates arginine transport through system y+L in human monocytes." Rotoli B.M., Bussolati O., Sala R., Barilli A., Talarico E., Gazzola G.C., Dall'Asta V. FEBS Lett. 571:177-181(2004) [PubMed] [Europe PMC] [Abstract] Cited for: FUNCTION, TISSUE SPECIFICITY, INDUCTION. |
| [15] | "Activation of classical protein kinase C decreases transport via systems y+ and y+L." Rotmann A., Simon A., Martine U., Habermeier A., Closs E.I. Am. J. Physiol. 292:C2259-C2268(2007) [PubMed] [Europe PMC] [Abstract] Cited for: FUNCTION, TISSUE SPECIFICITY, INHIBITION. |
| [16] | "Ornithine transport via cationic amino acid transporter-1 is involved in ornithine cytotoxicity in retinal pigment epithelial cells." Kaneko S., Ando A., Okuda-Ashitaka E., Maeda M., Furuta K., Suzuki M., Matsumura M., Ito S. Invest. Ophthalmol. Vis. Sci. 48:464-471(2007) [PubMed] [Europe PMC] [Abstract] Cited for: TISSUE SPECIFICITY. |
| [17] | "Identification of SLC7A7, encoding y+LAT-1, as the lysinuric protein intolerance gene." Torrents D., Mykkaenen J., Pineda M., Feliubadalo L., Estevez R., de Cid R., Sanjurjo P., Zorzano A., Nunes V., Huoponen K., Reinikainen A., Simell O., Savontaus M.-L., Aula P., Palacin M. Nat. Genet. 21:293-296(1999) [PubMed] [Europe PMC] [Abstract] Cited for: VARIANT LPI ARG-334, CHARACTERIZATION OF VARIANT LPI ARG-334. |
| [18] | "Structure of the SLC7A7 gene and mutational analysis of patients affected by lysinuric protein intolerance." Sperandeo M.P., Bassi M.T., Riboni M., Parenti G., Buoninconti A., Manzoni M., Incerti B., Larocca M.R., Di Rocco M., Strisciuglio P., Dianzani I., Parini R., Candito M., Endo F., Ballabio A., Andria G., Sebastio G., Borsani G. Am. J. Hum. Genet. 66:92-99(2000) [PubMed] [Europe PMC] [Abstract] Cited for: VARIANT LPI ARG-386. |
| [19] | "Functional analysis of novel mutations in y+LAT-1 amino acid transporter gene causing lysinuric protein intolerance (LPI)." Mykkaenen J., Torrents D., Pineda M., Camps M., Yoldi M.E., Horelli-Kuitunen N., Huoponen K., Heinonen M., Oksanen J., Simell O., Savontaus M.-L., Zorzano A., Palacin M., Aula P. Hum. Mol. Genet. 9:431-438(2000) [PubMed] [Europe PMC] [Abstract] Cited for: VARIANTS LPI VAL-54 AND ASP-338, CHARACTERIZATION OF VARIANTS LPI VAL-54 AND ARG-334. |
| [20] | "Five novel SLC7A7 variants and y+L gene-expression pattern in cultured lymphoblasts from Japanese patients with lysinuric protein intolerance." Shoji Y., Noguchi A., Shoji Y., Matsumori M., Takasago Y., Takayanagi M., Yoshida Y., Ihara K., Hara T., Yamaguchi S., Yoshino M., Kaji M., Yamamoto S., Nakai A., Koizumi A., Hokezu Y., Nagamatsu K., Mikami H., Kitajima I., Takada G. Hum. Mutat. 20:375-381(2002) [PubMed] [Europe PMC] [Abstract] Cited for: VARIANTS LPI PHE-238 AND PRO-489. |
| [21] | "A y(+)LAT-1 mutant protein interferes with y(+)LAT-2 activity: implications for the molecular pathogenesis of lysinuric protein intolerance." Sperandeo M.P., Paladino S., Maiuri L., Maroupulos G.D., Zurzolo C., Taglialatela M., Andria G., Sebastio G. Eur. J. Hum. Genet. 13:628-634(2005) [PubMed] [Europe PMC] [Abstract] Cited for: CHARACTERIZATION OF VARIANTS LPI LEU-36 DEL AND LEU-152, SUBCELLULAR LOCATION. |
| [22] | "Lysinuric protein intolerance: identification and functional analysis of mutations of the SLC7A7 gene." Sperandeo M.P., Annunziata P., Ammendola V., Fiorito V., Pepe A., Soldovieri M.V., Taglialatela M., Andria G., Sebastio G. Hum. Mutat. 25:410-410(2005) [PubMed] [Europe PMC] [Abstract] Cited for: VARIANTS LPI LYS-50; ILE-188 AND MET-333, CHARACTERIZATION OF VARIANTS LPI LYS-50; ILE-188 AND ARG-386. |
| [23] | "The consensus coding sequences of human breast and colorectal cancers." Sjoeblom T., Jones S., Wood L.D., Parsons D.W., Lin J., Barber T.D., Mandelker D., Leary R.J., Ptak J., Silliman N., Szabo S., Buckhaults P., Farrell C., Meeh P., Markowitz S.D., Willis J., Dawson D., Willson J.K.V. Velculescu V.E.Science 314:268-274(2006) [PubMed] [Europe PMC] [Abstract] Cited for: VARIANT [LARGE SCALE ANALYSIS] SER-413. |
| [24] | "Lysinuric protein intolerance: update and extended mutation analysis of the SLC7A7 gene." Sperandeo M.P., Andria G., Sebastio G. Hum. Mutat. 29:14-21(2008) [PubMed] [Europe PMC] [Abstract] Cited for: VARIANTS LPI ILE-5; GLU-36 DEL; LYS-50; LEU-53; VAL-54; PRO-124; PRO-140; LEU-152; ILE-188; GLU-191; PHE-238; ASP-251; PRO-261; MET-333; ARG-334; ASP-338; TYR-365; ARG-386 AND PRO-489. |
| + | Additional computationally mapped references. |
Web resources
Cross-references
Sequence databases | |
|---|---|
| EMBL GenBank DDBJ | AF092032 mRNA. Translation: AAC83706.1. AJ130718 mRNA. Translation: CAA10198.1. Y18474 mRNA. Translation: CAB40136.1. AB031537 Genomic DNA. Translation: BAA95120.1. Sequence problems. AB011263 mRNA. Translation: BAB11849.1. AB020532 mRNA. Translation: BAA87623.1. BX161519 mRNA. Translation: CAD61952.1. BX248291 mRNA. Translation: CAD62619.1. Different initiation. AK314351 mRNA. Translation: BAG36987.1. CH471078 Genomic DNA. Translation: EAW66245.1. CH471078 Genomic DNA. Translation: EAW66246.1. CH471078 Genomic DNA. Translation: EAW66247.1. CH471078 Genomic DNA. Translation: EAW66248.1. BC003062 mRNA. Translation: AAH03062.1. BC010107 mRNA. Translation: AAH10107.1. |
| IPI | IPI00549477. |
| RefSeq | NP_001119577.1. NM_001126105.2. NP_001119578.1. NM_001126106.2. |
| UniGene | Hs.513147. Hs.732349. |
3D structure databases | |
| ProteinModelPortal | Q9UM01. |
| ModBase | Search... |
Protein-protein interaction databases | |
| IntAct | Q9UM01. 1 interaction. |
| STRING | 9606.ENSP00000285850. |
PTM databases | |
| PhosphoSite | Q9UM01. |
Polymorphism databases | |
| DMDM | 12643378. |
Proteomic databases | |
| PaxDb | Q9UM01. |
| PRIDE | Q9UM01. |
Protocols and materials databases | |
| DNASU | 9056. |
| StructuralBiologyKnowledgebase | Search... |
Genome annotation databases | |
| Ensembl | ENST00000285850; ENSP00000285850; ENSG00000155465. ENST00000397528; ENSP00000380662; ENSG00000155465. ENST00000397529; ENSP00000380663; ENSG00000155465. ENST00000397532; ENSP00000380666; ENSG00000155465. ENST00000555702; ENSP00000451881; ENSG00000155465. |
| GeneID | 9056. |
| KEGG | hsa:9056. |
| UCSC | uc001wgr.4. human. |
Organism-specific databases | |
| CTD | 9056. |
| GeneCards | GC14M023242. |
| HGNC | HGNC:11065. SLC7A7. |
| HPA | HPA036227. |
| MIM | 222700. phenotype. 603593. gene. |
| neXtProt | NX_Q9UM01. |
| Orphanet | 470. Lysinuric protein intolerance. |
| PharmGKB | PA35925. |
| GenAtlas | Search... |
Phylogenomic databases | |
| eggNOG | COG0531. |
| HOVERGEN | HBG000476. |
| InParanoid | Q9UM01. |
| KO | K13867. |
| OMA | IVASATW. |
| OrthoDB | EOG4255SN. |
| PhylomeDB | Q9UM01. |
Enzyme and pathway databases | |
| Reactome | REACT_15518. Transmembrane transport of small molecules. REACT_19419. Amino acid and oligopeptide SLC transporters. REACT_604. Hemostasis. |
Gene expression databases | |
| ArrayExpress | Q9UM01. |
| Bgee | Q9UM01. |
| CleanEx | HS_SLC7A7. |
| Genevestigator | Q9UM01. |
| GermOnline | ENSG00000155465. Homo sapiens. |
Family and domain databases | |
| InterPro | IPR002293. AA/rel_permease1. [Graphical view] |
| PANTHER | PTHR11785. PTHR11785. 1 hit. |
| PIRSF | PIRSF006060. AA_transporter. 1 hit. |
| PROSITE | PS00218. AMINO_ACID_PERMEASE_1. False negative. [Graphical view] |
| ProtoNet | Search... |
Other | |
| GenomeRNAi | 9056. |
| NextBio | 33935. |
| SOURCE | Search... |
Entry information
| Entry name | YLAT1_HUMAN | ||||||||
| Accession | Primary (citable) accession number: Q9UM01 Secondary accession number(s): B2RAU0 Q9P2V5 | ||||||||
| Entry history |
| ||||||||
| Entry status | Reviewed (UniProtKB/Swiss-Prot) | ||||||||
| Annotation program | Chordata Protein Annotation Program | ||||||||
| Disclaimer | Any medical or genetic information present in this entry is provided for research, educational and informational purposes only. It is not in any way intended to be used as a substitute for professional medical advice, diagnosis, treatment or care. | ||||||||
Relevant documents
| Human chromosome 14 Human chromosome 14: entries, gene names and cross-references to MIM |
| Human entries with polymorphisms or disease mutations List of human entries with polymorphisms or disease mutations |
| Human polymorphisms and disease mutations Index of human polymorphisms and disease mutations |
| MIM cross-references Online Mendelian Inheritance in Man (MIM) cross-references in UniProtKB/Swiss-Prot |
| SIMILARITY comments Index of protein domains and families |

Clusters with
