Recombinant Human Amino acid transporter heavy chain SLC3A2 (SLC3A2)

Code CSB-CF021640HU
Size Pls inquire
Source in vitro E.coli expression system
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Product Details

Target Names
Uniprot No.
Alternative Names
SLC3A2; MDU1; 4F2 cell-surface antigen heavy chain; 4F2hc; 4F2 heavy chain antigen; Lymphocyte activation antigen 4F2 large subunit; Solute carrier family 3 member 2; CD antigen CD98
Homo sapiens (Human)
Expression Region
Target Protein Sequence
Note: The complete sequence including tag sequence, target protein sequence and linker sequence could be provided upon request.
Protein Length
full length protein
Tag Info
N-terminal 10xHis-tagged
Liquid or Lyophilized powder
Note: We will preferentially ship the format that we have in stock, however, if you have any special requirement for the format, please remark your requirement when placing the order, we will prepare according to your demand.
Lyophilized from Tris/PBS-based buffer, 6% Trehalose, pH 8.0
Troubleshooting and FAQs
Storage Condition
Store at -20°C/-80°C upon receipt, aliquoting is necessary for mutiple use. Avoid repeated freeze-thaw cycles.
Shelf Life
The shelf life is related to many factors, storage state, buffer ingredients, storage temperature and the stability of the protein itself.
Generally, the shelf life of liquid form is 6 months at -20°C/-80°C. The shelf life of lyophilized form is 12 months at -20°C/-80°C.
Lead Time
Basically, we can dispatch the products out in 1-3 working days after receiving your orders. Delivery time may differ from different purchasing way or location, please kindly consult your local distributors for specific delivery time.
Note: All of our proteins are default shipped with normal blue ice packs, if you request to ship with dry ice, please communicate with us in advance and extra fees will be charged.
Repeated freezing and thawing is not recommended. Store working aliquots at 4°C for up to one week.
Datasheet & COA
Please contact us to get it.

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Target Background

Component of several heterodimeric complexes involved in amino acid transport. The precise substrate specificity depends on the other subunit in the heterodimer. The complexes function as amino acid exchangers. The homodimer functions as sodium-independent, high-affinity transporter that mediates uptake of large neutral amino acids such as phenylalanine, tyrosine, L-DOPA, leucine, histidine, methionine and tryptophan. The heterodimer formed by SLC3A2 and SLC7A6 or SLC3A2 and SLC7A7 mediates the uptake of dibasic amino acids. The heterodimer with SLC7A5/LAT1 mediates the transport of thyroid hormones triiodothyronine (T3) and thyroxine (T4) across the cell membrane. The heterodimer with SLC7A5/LAT1 is involved in the uptake of toxic methylmercury (MeHg) when administered as the L-cysteine or D,L-homocysteine complexes. The heterodimer with SLC7A5/LAT1 is involved in the uptake of leucine. When associated with LAPTM4B, the heterodimer with SLC7A5/LAT1 is recruited to lysosomes to promote leucine uptake into these organelles, and thereby mediates mTORC1 activation. The heterodimer with SLC7A5/LAT1 may play a role in the transport of L-DOPA across the blood-brain barrier. The heterodimer formed by SLC3A2 and SLC7A5/LAT1 or SLC3A2 and SLC7A8/LAT2 is involved in the cellular activity of small molecular weight nitrosothiols, via the stereoselective transport of L-nitrosocysteine (L-CNSO) across the transmembrane. Together with ICAM1, regulates the transport activity of SLC7A8/LAT2 in polarized intestinal cells by generating and delivering intracellular signals. Required for targeting of SLC7A5/LAT1 and SLC7A8/LAT2 to the plasma membrane and for channel activity. Plays a role in nitric oxide synthesis in human umbilical vein endothelial cells (HUVECs) via transport of L-arginine. May mediate blood-to-retina L-leucine transport across the inner blood-retinal barrier.; (Microbial infection) In case of hepatitis C virus/HCV infection, the complex formed by SLC3A2 and SLC7A5/LAT1 plays a role in HCV propagation by facilitating viral entry into host cell and increasing L-leucine uptake-mediated mTORC1 signaling activation, thereby contributing to HCV-mediated pathogenesis.
Gene References into Functions
  1. Data suggest that SLC3A2-NRG1 should be considered a therapeutic target for patients with invasive mucinous adenocarcinoma of the lung (IMA). PMID: 27626312
  2. These results demonstrate a novel fundamental role of LAT1 to support the protein expression of 4F2hc via a chaperone-like function in chorionic trophoblasts. PMID: 28320871
  3. SLC3A2 is upregulated in osteosarcoma and plays a crucial role in tumor growth. PMID: 28350098
  4. Expression levels of CD98 and beta1-integrin-A (the activated form of beta1-integrin) were significantly increased in hepatocellular carcinoma (HCC) tissues relative to those of normal liver tissues. PMID: 27834933
  5. Data suggest that increased CD98 (4F2hc) expression plays an essential role in tumor aggressiveness and metastasis. PMID: 28179310
  6. Study demonstrated that the mRNA expression levels of the two system xc- subunits, SLC7A11 and SLC3A2, in peripheral white blood cells are lowered in patients with schizophrenia than healthy individuals PMID: 26540405
  7. ubiquitylation and the resulting downregulation of CD98 can limit cell proliferation and clonal expansion. PMID: 26493331
  8. exposure to diesel exhaust particle extract induces functional overexpression of the amino acid transporter LAT1/CD98hc in lung cells PMID: 26621329
  9. The detergent-induced stabilization of the purified human 4F2hc-LAT2 complex presented here paves the way towards its crystallization and structure determination at high-resolution PMID: 25299125
  10. HSV-1 recruited cellular fusion regulatory proteins CD98hc and beta1 integrin to the nuclear membrane for viral de-envelopment fusion. PMID: 25995262
  11. CD98-mediated phosphorylation of focal adhesion kinase may facilitate the assembly of pro-tumorigenic signaling complexes and the subsequent amplification of a positive feedback loop of CD98/integrins/FAK/RhoA/ROCK. PMID: 26172215
  12. data suggest that genetic variation of rs1059292 in CD98 gene may affect clinical outcome of NSCLC in Chinese population PMID: 24782339
  13. Studied and identified the eukaryotic protein CD98hc as a partner for Brucella T4SS subunit VirB2. PMID: 25505297
  14. CAP-D3 down-regulates transcription of genes that encode amino acid transporters (SLC7A5 and SLC3A2) to promote bacterial autophagy by colon epithelial cells. PMID: 25701737
  15. High CD98hc expression is associated with non-small cell lung cancer. PMID: 25084765
  16. observed a correlation between less differentiated and more aggressive clear cell renal cell cancer and CD98hc expression; found that CD98hc is not only a descriptive marker for aggressive cancers, but bears a major regulatory role of malignant cell function PMID: 24359579
  17. We detected elevated levels of antipeptide responses, but failed to detect reactivity against native CD98-expressing HeLa cells in sera of immunized mice. PMID: 24484217
  18. The extracellular domain of 4F2hc interacts with LAT2, almost completely covering its extracellular face and stabilizing the solubilized transporter. PMID: 24516142
  19. heteromerization of y+LAT1 and 4F2hc within the cell is not disrupted by any of the tested LPI mutations PMID: 23940088
  20. Although extracellular galectin-3 accumulates due to the decrease in MMP-2 activity, galectin-3 signaling events are blocked due to an impaired interaction with 4F2hc, inducing an increased degradation of beta-catenin. PMID: 23651923
  21. The interaction of galectin 3 and CD98 can induce Eos to release chemical mediators that contributes to the initiation of the intestinal inflammation. PMID: 23272174
  22. These findings demonstrate the importance of the extracellular loop of CD98 in the innate host defense response to intestinal infection by attaching and effacing (A/E) pathogens. PMID: 23297381
  23. [REVIEW] Rapid proliferation and resulting clonal expansion are dependent on CD98, a protein whose well-conserved orthologs appear restricted to vertebrates. PMID: 22499670
  24. Strategies targeting transgenic CD98 heavy-chain demonstrate clinical application for treating type 1 diabetes and other T cell-mediated autoimmune diseases. PMID: 22291182
  25. study revealed that LAT1 and CD98 expression are positively correlated with breast cancer proliferation and negatively correlated with ER and PgR status; show that LAT1 and CD98 expression are prognostic factors in triple negative breast cancer PMID: 22077314
  26. Results suggest that 4F2hc may play a significant role in tumor progression, hypoxic conditions and poor outcome in patients with pulmonary NE tumors. PMID: 21750865
  27. Compared with the adult cerebral cortex, mRNAs encoding OATP1A2, OATP1C1, OATP3A1 variant 2, OATP4A1, LAT2 and CD98 were reduced in fetal cortex at different gestational ages, whilst mRNAs encoding MCT8, MCT10, OATP3A1 variant 1 and LAT1 were similar. PMID: 21486766
  28. The integrin-binding domain of the CD98 heavy chain transgene is required for antigen-driven T cell clonal expansion in the pathogenesis of an autoimmune disease such as experimental type 1 diabetes. mellitus. PMID: 21670318
  29. Folding seems to be directed by the initial formation of hydrophobic clusters within the first strands of the beta-barrel of domain A followed by additional hydrophobic interactions in domain C. PMID: 21352957
  30. CD98hc is involved in integrin trafficking and by consequence, in keratinocyte adhesion and differentiation. PMID: 21282044
  31. CD98 expression was associated with the grade of malignancy and cell cycle control, and was useful for predicting poor outcome in thymic epithelial tumors PMID: 20811665
  32. High expression of 4F2HC is associated with high-grade gliomas. PMID: 20091333
  33. High CD98 expression is associated with non-small-cell lung cancer with lymph node metastases. PMID: 19777189
  34. CD98 expression is down-regulated in thyroid papillary carcinoma; this may relate to the better prognosis associated with many of these tumours. PMID: 19922591
  35. Data show that, in vitro, under physiological conditions, CD98 is constitutively associated with beta1 integrins regardless of activation status. PMID: 12181350
  36. the interaction of CD98/LAT2 with ICAM-1, found to be expressed to the basolateral domain, and the potential of such interaction on intracellular signal activation in Caco2-BBE cell monolayers PMID: 12716892
  37. Involved in process of cell fusion necessary for syncytiotrophoblast formation. During this physiologically important event, amino acid transport activity is also regulated through expression of this membrane protein. PMID: 12740424
  38. The heavy chain of the cell surface antigen 4F2 is induced by lysophosphatidylcholine, oxLDL and many oxidation products. It mediates increased cytokine production by endothelial cells. PMID: 15178563
  39. results explain how high expression of CD98hc antigen in human cancers contributes to transformation PMID: 15485886
  40. iRNA-induced reduction in CD98 expression suppresses cell fusion during syncytialization of placental cell line. PMID: 15556631
  41. CD98hc is an integrin-associated protein that mediates integrin-dependent signals, which promote tumorigenesis. PMID: 15625115
  42. CD98 is a scaffolding protein that interacts with basolaterally expressed amino acid transporters and beta1 integrins and can alter amino acid transport and cell adhesion, migration and branching morphogenesis PMID: 15713750
  43. The 15 carboxy-terminal residues of 4F2hc are required for the transport function of the heterodimer. Mutation of the conserved residue leucine 523 to glutamine in the carboxy terminus reduced the Vmax of arginine and leucine uptake. PMID: 16785209
  44. Results demonstrated that a reduction of Sp1 or NF-kappaB expression reduced CD98 protein expression. PMID: 17023546
  45. data suggest N-glycosylation of CD98 & subsequent interaction with galectin 3 is critical for aspects of placental cell biology, & provides rationale for observation that in mice truncation of CD98hc extracellular domain leads to early embryonic lethality PMID: 17451431
  46. CD98hc is a bridge between multidrug resistance phenotype and tumor metastasis PMID: 17611393
  47. The structure of human 4F2HC ectodomain provides a model for homodimerization and electrostatic interaction with plasma membrane. PMID: 17724034
  48. The transmembrane domain of CD98 heavy chain has an essential role in the stimulation of alpha(v)beta(3) integrin for cell adhesion and motility. PMID: 18032696
  49. Inhibition of system L (LAT1/CD98hc) reduces the growth of cultured human breast cancer cells. PMID: 18813831
  50. CD98 expression in primary and metastatic neoplasms is reported. PMID: 19018776

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Subcellular Location
Apical cell membrane. Cell membrane; Single-pass type II membrane protein. Cell junction. Lysosome membrane. Melanosome.
Protein Families
SLC3A transporter family
Tissue Specificity
Expressed ubiquitously in all tissues tested with highest levels detected in kidney, placenta and testis and weakest level in thymus. During gestation, expression in the placenta was significantly stronger at full-term than at the mid-trimester stage. Exp
Database Links

HGNC: 11026

OMIM: 158070

KEGG: hsa:6520

STRING: 9606.ENSP00000367123

UniGene: Hs.502769

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