Recombinant Human Thiamine transporter 2 (SLC19A3), partial

Code CSB-EP866333HU
Size $306
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  • (Tris-Glycine gel) Discontinuous SDS-PAGE (reduced) with 5% enrichment gel and 15% separation gel.
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Product Details

Greater than 90% as determined by SDS-PAGE.
Target Names
Uniprot No.
Research Area
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.
Mol. Weight
11.4 kDa
Protein Length
Tag Info
N-terminal 6xHis-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.
If the delivery form is liquid, the default storage buffer is Tris/PBS-based buffer, 5%-50% glycerol. If the delivery form is lyophilized powder, the buffer before lyophilization is Tris/PBS-based buffer, 6% Trehalose, pH 8.0.
We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Please reconstitute protein in deionized sterile water to a concentration of 0.1-1.0 mg/mL.We recommend to add 5-50% of glycerol (final concentration) and aliquot for long-term storage at -20℃/-80℃. Our default final concentration of glycerol is 50%. Customers could use it as reference.
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
13-23 business days
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

Mediates high affinity thiamine uptake, probably via a proton anti-port mechanism. Has no folate transport activity.
Gene References into Functions
  1. two siblings who received a refined diagnosis of BTBGD following whole-genome sequencing. Both children inherited compound heterozygous mutations from unaffected parents; a missense single-nucleotide variant (p.G23V) in the first transmembrane domain of the protein, and a 4808-bp deletion in exon 1 encompassing the 5' UTR and minimal promoter region. PMID: 28696212
  2. Using aggregated exome sequencing data, we calculate the carrier frequency of mutations in SLC19A3 as 1 in 232 individuals in the general population, for an estimated prevalence of the disease of approximately 1 in 215,000 individuals. The disease is thus more frequent than previously recognized PMID: 28402605
  3. Genetic variations in SLC19A3 play an important role in the pathogenesis of severe diabetic retinopathy and nephropathy and may explain why some individuals with type 1 diabetes are less prone than others to develop microvascular complications. PMID: 26718501
  4. Genetic screening of SLC19A3 mutation is crucial to diagnosis autosomal recessive biotin-thiamine-responsive basal ganglia disease in asymptomatic relatives presenting with unexplained subacute encephalopathy and abnormal movements. PMID: 27749535
  5. The direct binding and activation of SLC19A3 expression by HIF-1alpha during hypoxic stress PMID: 27743994
  6. The mutation of SLC19A3 is related to Biotin-thiamine-responsive basal ganglia disease. PMID: 27905264
  7. Species differences in the substrate specificity of THTR-2 between human and mouse orthologues were observed. PMID: 26528626
  8. large genomic deletions occur in the regulatory region of SLC19A3 in Biotin-Thiamine-Responsive Basal Ganglia Encephalopathy PMID: 26863430
  9. Genetic variation in the SLC19A3 thiamine transporter at 2:228563818T/C may make a modest contribution towards the genetic susceptibility to alcohol dependence syndrome. PMID: 24667528
  10. This study provided evidence that biotin-thiamine-responsive basal ganglia disease is the result of SLC19A2 mutation. PMID: 24372704
  11. TM4SF4 interacts with hTHTR-2 and influences the physiological function of the thiamine transporter in human intestinal epithelial cells. PMID: 24282057
  12. These studies demonstrate that the human intestinal thiamine uptake is adaptively regulated by the extracellular substrate level via transcriptional regulation of the THTR-2 system, and that SP1 transcriptional factor is involved in this regulation. PMID: 23989004
  13. Glucose-induced decreased expression of thiamine transporters in the tubular epithelium may mediate renal mishandling of thiamine in diabetes. PMID: 23285265
  14. A new, severe phenotype of SLC19A3 is identified in early-infantile, lethal encephalopathy characterized by subtotal brain degeneration. PMID: 23482991
  15. Our data shows that SLC19A3 is a new candidate for mutation screening in patients with Leigh syndrome PMID: 23423671
  16. Two Spanish siblings with a biotin-responsive basal ganglia disease phenotype and mutations in SLC19A3 presented with acute episodes of generalized dystonia PMID: 22777947
  17. These results suggested that aberrant SLC19A3 promoter hypermethylation in plasma may be a novel biomarker for breast and gastric cancer diagnosis. PMID: 21789241
  18. The attenuated increase in SLC19A3 expression after HIF-1alpha knockdown suggests a role for HIF-1alpha mediated pathways regulating SLC19A3 gene expression. PMID: 20930543
  19. these cases broaden the phenotypic spectrum of disorders associated with SLC19A3 mutations and highlight the potential benefit of biotin and/or thiamin treatments and the need to assess the clinical efficacy of these treatments. PMID: 21176162
  20. Results suggest that methylation of SLC19A3 promoter could be a novel biomarker for early gastric cancer development. PMID: 19816091
  21. thiamine transporter THTR2 gene expression is down-regulated in breast cancer PMID: 12861052
  22. characterization of the SLC19A3 promoter in vitro and in vivo and demonstrate the importance of an SP1 cis-regulatory element in regulating promoter activity of this important human gene. PMID: 15217784
  23. One of the genes up-regulated by SLC19A3 protein (THTR2) transfection was down-regulated by thiamine depletion (CYP4B1) PMID: 15328374
  24. Expression of SLC19A3 in leukocytes is a relatively sensitive indicator of marginal biotin deficiency. PMID: 15623830
  25. In this segment, each family displayed one of two different missense mutations that altered the coding sequence of SLC19A3, the gene for a transporter related to the reduced-folate (encoded by SLC19A1) and thiamin (encoded by SLC19A2) transporters. PMID: 15871139
  26. differentiation of intestinal epithelial cells is associated with an up-regulation in thiamin uptake process which is mediated via transcriptional regulatory mechanisms that involve the SLC19A2 and SLC19A3 genes PMID: 16055442
  27. analysis of targeting and trafficking of hTHTR1 and hTHTR2 in epithelial cells PMID: 16371350
  28. Thiamine uptake by HEK-293 cells is mediated via a specific pH-dependent process, which involves both the hTHTR-1 and hTHTR-2. PMID: 16705148
  29. hTHTR2 mutants (G23V, T422A) both abrogate thiamine transport activity rather than targeting of hTHTR2 to the cell surface. PMID: 16790503
  30. THTR2 is involved in thiamine transport by reginal pigment epithelium. PMID: 17463047
  31. Pancreatic beta cells and islets take up thiamine by a regulated THTR1/2-mediated process. PMID: 19423748

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Involvement in disease
Thiamine metabolism dysfunction syndrome 2, biotin- or thiamine-responsive type (THMD2)
Subcellular Location
Membrane; Multi-pass membrane protein.
Protein Families
Reduced folate carrier (RFC) transporter (TC 2.A.48) family
Tissue Specificity
Widely expressed but most abundant in placenta, kidney and liver.
Database Links

HGNC: 16266

OMIM: 606152

KEGG: hsa:80704

STRING: 9606.ENSP00000258403

UniGene: Hs.221597

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