FOLR1 Protein, Human, Recombinant (ECD, His Tag)


FOLR1 Protein, Human, Recombinant (ECD, His Tag): Product Information

> 95 % as determined by SDS-PAGE
< 1.0 EU per μg of the protein as determined by the LAL method
Testing in progress
Protein Construction
A DNA sequence encoding the human FOLR1 (NP_057937.1) (Met 1-Met 233) without the pro peptide was expressed, with a polyhistidine tag at the C-terminus.
Expressed Host
HEK293 Cells
Predicted N Terminal
Arg 25
Molecule Mass
The secreted recombinant human FOLR1 consists of 220 amino acids and has a predicted molecular mass of 26 kDa. It migrates as an approximately 37 kDa band in SDS-PAGE under reducing conditions due to glycosylation.
Lyophilized from sterile PBS, pH 7.4
Please contact us for any concerns or special requirements.
Normally 5 % - 8 % trehalose, mannitol and 0.01% Tween80 are added as protectants before lyophilization.
Please refer to the specific buffer information in the hard copy of CoA.
In general, recombinant proteins are provided as lyophilized powder which are shipped at ambient temperature.
Bulk packages of recombinant proteins are provided as frozen liquid. They are shipped out with blue ice unless customers require otherwise.
Stability & Storage
Samples are stable for up to twelve months from date of receipt at -20℃ to -80℃
Store it under sterile conditions at -20℃ to -80℃. It is recommended that the protein be aliquoted for optimal storage. Avoid repeated freeze-thaw cycles.
A hardcopy of COA with reconstitution instruction is sent along with the products. Please refer to it for detailed information.

FOLR1 Protein, Human, Recombinant (ECD, His Tag): Images

FOLR1 Protein, Human, Recombinant (ECD, His Tag): Synonyms

FBP Protein, Human; Folate Binding Protein Protein, Human; FOLR Protein, Human

FOLR1 Background Information

The protein encoded by FOLR1 gene is a member of the folate receptor family. Members of this gene family bind folic acid and its reduced derivatives, and transport 5-methyltetrahydrofolate into cells. This gene product is a secreted protein that either anchors to membranes via a glycosyl-phosphatidylinositol linkage or exists in a soluble form. Mutations in this gene have been associated with neurodegeneration due to cerebral folate transport deficiency. Due to the presence of two promoters, multiple transcription start sites, and alternative splicing, multiple transcript variants encoding the same protein have been found for this gene.
Folate receptor α (FRα) is the most important subunit of Folate receptor and the alpha isoform has been shown to be selectively overexpressed in cancer types like breast and ovarian cancer compared to normal breast and ovarian epithelial cells. It was determined that Folate receptor α exhibits a limited expression on the apical surfaces of the epithelial cells of normal lung, breast, thyroid, parathyroid, and kidney tissues. For their uptake of folate, normal cells rely almost exclusively on the reduced folate carrier, whereas many carcinomas and myeloid leukemia cells overexpress a high-affinity FR on their surfaces, perhaps reflecting their increased need for folate to support rapid cell division.
Full Name
folate receptor 1 (adult)
  • Senol S, Ceyran AB, Aydin A, et al. Folate receptor α expression and significance in endometrioid endometrium carcinoma and endometrial hyperplasia. International Journal of Clinical and Experimental Pathology. 2015;8(5):5633-5641.
  • Folate Receptor Alpha Peptide Vaccine generates immunity in Breast and Ovarian Cancer Patients
    Kalli, KR;Block, MS;Kasi, PM;Erskine, CL;Hobday, TJ;Dietz, A;Padley, D;Gustafson, MP;Shreeder, B;Puglisi-Knutson, D;Visscher, DW;Mangskau, TK;Wilson, G;Knutson, KL;
    Clin. Cancer Res.
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