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Symbol SLC7A1 contributors: mct/npt - updated : 13-01-2016
HGNC name solute carrier family 7 (cationic amino acid transporter, y+ system), member 1
HGNC id 11057
Location 13q12.3      Physical location : 30.083.551 - 30.169.825
Synonym name
  • ecotropic retroviral receptor
  • amino acid transporter, cationic 1
  • system Y+ basic amino acid transporter
  • Synonym symbol(s) ATRC1, MERR, CAT-1, HCAT1, ERR, REC1L, CTR1
    TYPE functioning gene
    STRUCTURE 86.28 kb     13 Exon(s)
    10 Kb 5' upstream gene genomic sequence study
    regulatory sequence Promoter
    text structure
  • bifunctional INE (intronic element) within the first intron of the SLC7A1 gene was identified, and act as a transcriptional enhancer in unstressed cells by binding the transcription factor, purine-rich element binding protein A (Pur alpha)
  • MAPPING cloned Y linked Y status provisional
    Physical map
    USP12 5q33-q34 ubiquitin specific protease 12 RPL21 13pter-p13 ribosomal protein L21 LOC254109 13q12.2 similar to MGC53580 protein GTF3A 13q12.3-q13.1 general transcription factor IIIA MTIF3 13q12.2 mitochondrial translational initiation factor 3 PDZRN1 13q12.2 PDZ domain containing ring finger 1 MGC9850 13q12.2 hypothetical protein MGC9850 POLR1D 13q12.2 polymerase (RNA) 1 polypeptide D, 16kDa GSH1 13q12.13 GS homeobox 1 IPF1 13q12.1 insulin promoter factor 1, homeodomain transcription factor LOC387915 13 hypothetical gene supported by AK000246 CDX2 13q12-q13 caudal type homeo box transcription factor 2 FLT3 13q12 fms-related tyrosine kinase 3 LOC390390 13 similar to chromosome 7 open reading frame 17 protein; 16.7kD protein LOC390391 13 similar to Elongation factor 1-alpha 1 (EF-1-alpha-1) (Elongation factor 1 A-1) (eEF1A-1) (Elongation factor Tu) (EF-Tu) PAN3 13q12.2 PABP1-dependent poly A-specific ribonuclease subunit PAN3 FLT1 13q12 fms-related tyrosine kinase 1 (vascular endothelial growth factor/vascular permeability factor receptor) LOC341784 13q12.3 similar to eukaryotic translation initiation factor 4A1; initiation factor eIF-4A long form C13orf12 13q12.13 chromosome 13 open reading frame 12 LOC283537 13q12.3 hypothetical protein LOC283537 CYP51P2 13 hypothetical protein LOC283537 KIAA0774 13q12.13-q12.2 hypothetical protein LOC283537 SLC7A1 13q12.3 solute carrier family 7 (cationic amino acid transporter, y+ system), member 1 UBL3 13q12-q13 ubiquitin-like 3 MGC2599 13q12.3 hypothetical protein MGC2599 similar to katanin p60 subunit A 1 2599 PRDX2P1 13p12 peroxiredoxin 2 pseudogene 1 UBCH7N2 13q12.3 ubiquitin-conjugating enzyme-like HMGB1 13q12 high-mobility group box 1 LOC390392 13 similar to Protein-tyrosine phosphatase, non-receptor type 2 (T-cell protein-tyrosine phosphatase) (TCPTP) D13S106E 13q12-q14 highly charged protein ALOX5AP 13q12 arachidonate 5-lipoxygenase-activating protein LOC387917 13 LOC387917 FLJ14834 13q12.3 hypothetical protein FLJ14834 MGC40178 13q12.3 hypothetical protein MGC40178 HSPH1 13q12.3 heat shock 105kDa/110kDa protein 1 B3GTL 13q12.3 beta 3-glycosyltransferase-like GREAT 13q12.3 beta 3-glycosyltransferase-like LOC196549 13q12.3 similar to hypothetical protein FLJ20897
    TRANSCRIPTS type messenger
    identificationnb exonstypebpproduct
    ProteinkDaAAspecific expressionYearPubmed
    13 - 7357 67.5 629 - Kamath (1999)
    Type ubiquitous
       expressed in (based on citations)
    SystemOrgan level 1Organ level 2Organ level 3Organ level 4LevelPubmedSpeciesStageRna symbol
    Digestiveintestinelarge intestinecolon highly
    Nervousbraindiencephalonhypothalamus   Homo sapiens
     brainbasal nucleicaudate nucleus   Homo sapiens
     brainforebraincerebral cortexfrontal cortexhighly Homo sapiens
     braindiencephalonthalamus   Homo sapiens
    Reproductivefemale systemuteruscervix highly
    SystemTissueTissue level 1Tissue level 2LevelPubmedSpeciesStageRna symbol
    cell lineage
    cell lines
    at STAGE
    physiological period pregnancy
    Text placenta
  • twelve transmembrane (12TM) segments
  • cytoplasmic N and C termini
  • conjugated GlycoP
    intraspecies homolog to SLC7A2
  • solute carrier family 7
  • amino acid-polyamine-organocation (APC) superfamily
  • cationic amino acid transporter (CAT) family
  • CATEGORY transport carrier
    SUBCELLULAR LOCALIZATION     plasma membrane
    basic FUNCTION
  • high-affinity, low capacity permease involved in the transport of the cationic amino acids (arginine, lysine and ornithine) in non-hepatic tissues
  • may also function as an ecotropic retroviral leukemia receptor
  • SLC7A1 mediated L-arginine influx, is essential for both inducible nitric oxide synthase and arginase enzyme activities, which in turn modulate proliferation and differentiation of human epidermal skin cells (Schnorr 2003)
  • SLC7A1, SLC7A3 mediate influences of NMDA receptor activation on the MTOR pathway that regulates neuronal processes
  • directly involved in erythropoiesis through supplying arginine to the blood cells (Maeda 2008)
  • its expression is highly induced in proliferating and stressed cells via mechanisms that include transcriptional activation
  • is responsible for the bulk of the uptake of cationic amino acids in most mammalian cells
  • endothelial SLC7A1 overexpression can counter the ability of oxidative stress to augment pressor responses to behavioural stress
  • involvement in L-ornithine transport at the luminal and abluminal sides of the inner blood-retinal barrier (BRB) and the basal side of the outer BRB
    metabolism aminoacid
    a component
    small molecule
  • PTBP1 and HNRNPL are positive regulators of SLC7A1 mRNA translation via the internal ribosome entry site (IRES) under stress conditions that cause a global decrease of protein synthesis
  • activation of protein kinase C (PKC) leads to down-regulation of the cell surface SLC7A1
  • estradiol augments while progesterone inhibits arginine transport in human endothelial cells through modulation of SLC7A1
  • cell & other
    corresponding disease(s)
    Other morbid association(s)
    TypeGene ModificationChromosome rearrangementProtein expressionProtein Function
    constitutional     --low  
    decreased, especially in the stratum granulosum of psoriatic skin (Jaeger 2008)
    Susceptibility to essential hypertension
    Variant & Polymorphism other functionally active polymorphism in the 3'UTR that may account for the apparent link between altered endothelial function, L-arginine, and nitric oxide metabolism and predisposition to essential hypertension (Yang 2007)
    Candidate gene
    Therapy target