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Biotinylated Human FOLR1 Protein 4745



  • Expression: HEK293
  • Functional: Yes (ELISA)
  • Amino Acid Range: Arg25-Met233
SKU: 4745parent Categories: , Tags: , , ,
Weight1 lbs
Dimensions9 × 5 × 2 in
product tag

C-His-Avi, also biotinylated

Biotinylated Human FOLR1 Protein 4745

Size and concentration
100, 500µg and lyophilized
Storage Instructions
Valid for 12 months from date of receipt when stored at -80°C. Recommend to aliquot the protein into smaller quantities for optimal storage. Please minimize freeze-thaw cycles.
Storage buffer
Shipped at ambient temperature.
> 95% as determined by Tris-Bis PAGE
target relevance
Folate Receptor 1 (FOLR1), also known as Folate Receptor alpha and Folate Binding Protein (FBP), is a 37 - 42 kDa protein that mediates the cellular uptake of folic acid and reduced folates. Dietary folates are required for many key metabolic processes including nucleotide and methionine synthesis, the interconversion of glycine and serine, and histidine breakdown. FOLR1 binds to folate and reduced folic acid derivatives and mediates delivery of 5-methyltetrahydrofolate and folate analogs into the interior of cells. Has high affinity for folate and folic acid analogs at neutral pH.
Protein names
Folate receptor alpha (FR-alpha) (Adult folate-binding protein) (FBP) (Folate receptor 1) (Folate receptor, adult) (KB cells FBP) (Ovarian tumor-associated antigen MOv18)
Gene names
Protein family
Folate receptor family
FUNCTION: Binds to folate and reduced folic acid derivatives and mediates delivery of 5-methyltetrahydrofolate and folate analogs into the interior of cells (PubMed:19074442, PubMed:23851396, PubMed:23934049, PubMed:2527252, PubMed:8033114, PubMed:8567728). Has high affinity for folate and folic acid analogs at neutral pH (PubMed:23851396, PubMed:23934049, PubMed:2527252, PubMed:8033114, PubMed:8567728). Exposure to slightly acidic pH after receptor endocytosis triggers a conformation change that strongly reduces its affinity for folates and mediates their release (PubMed:8567728). Required for normal embryonic development and normal cell proliferation (By similarity). {ECO:0000250|UniProtKB:P35846, ECO:0000269|PubMed:19074442, ECO:0000269|PubMed:23851396, ECO:0000269|PubMed:23934049, ECO:0000269|PubMed:2527252, ECO:0000269|PubMed:8033114, ECO:0000269|PubMed:8567728}.
Catalytic activity
BINDING 103; /ligand="folate"; /ligand_id="ChEBI:CHEBI:62501"; /evidence="ECO:0000269|PubMed:23851396"; BINDING 107; /ligand="folate"; /ligand_id="ChEBI:CHEBI:62501"; /evidence="ECO:0000269|PubMed:23851396"; BINDING 124..128; /ligand="folate"; /ligand_id="ChEBI:CHEBI:62501"; /evidence="ECO:0000269|PubMed:23851396"; BINDING 157..162; /ligand="folate"; /ligand_id="ChEBI:CHEBI:62501"; /evidence="ECO:0000269|PubMed:23851396"; BINDING 196; /ligand="folate"; /ligand_id="ChEBI:CHEBI:62501"; /evidence="ECO:0000269|PubMed:23851396"
Subellular location
SUBCELLULAR LOCATION: Cell membrane {ECO:0000269|PubMed:2527252, ECO:0000269|PubMed:8033114, ECO:0000269|PubMed:8567728}; Lipid-anchor, GPI-anchor {ECO:0000269|PubMed:17566972, ECO:0000269|PubMed:7578066}. Apical cell membrane {ECO:0000269|PubMed:10787414}; Lipid-anchor, GPI-anchor {ECO:0000269|PubMed:17566972, ECO:0000269|PubMed:7578066}. Basolateral cell membrane {ECO:0000269|PubMed:10787414}; Lipid-anchor, GPI-like-anchor {ECO:0000269|PubMed:17566972, ECO:0000269|PubMed:7578066}. Secreted {ECO:0000305|PubMed:3476960}. Cytoplasmic vesicle {ECO:0000269|PubMed:8567728}. Cytoplasmic vesicle, clathrin-coated vesicle {ECO:0000269|PubMed:8567728}. Endosome {ECO:0000269|PubMed:8567728}. Note=Endocytosed into cytoplasmic vesicles and then recycled to the cell membrane. {ECO:0000269|PubMed:8567728}.
TISSUE SPECIFICITY: Primarily expressed in tissues of epithelial origin. Expression is increased in malignant tissues. Expressed in kidney, lung and cerebellum. Detected in placenta and thymus epithelium. {ECO:0000269|PubMed:2527252, ECO:0000269|PubMed:2768245, ECO:0000269|PubMed:9063895}.
Post-translational modification
PTM: The secreted form is derived from the membrane-bound form either by cleavage of the GPI anchor, or/and by proteolysis catalyzed by a metalloprotease. {ECO:0000305|PubMed:3476960}.
Target Relevance information above includes information from UniProt accession : P15328
The UniProt Consortium


ELISA with Biotinylated Human FOLR1 Protein
Immobilized Anti-FOLR1 Antibody, hFc Tag at 0.5µg/ml (100µl/Well) on the plate. Dose response curve for Biotinylated Human FOLR1, His Tag with the EC50 of 13.9ng/ml determined by ELISA.
HPLC of Biotinylated Human FOLR1 Protein
The purity of Biotinylated Human FOLR1 is greater than 95% as determined by SEC-HPLC.
SDS-PAGE gel of Biotinylated Human FOLR1 Protein
Biotinylated Human FOLR1 on Tris-Bis PAGE under reduced condition. The purity is greater than 95%.


Published literature highly relevant to the biological target of this product and referencing this antibody or clone are retrieved from PubMed database provided by The United States National Library of Medicine at the National Institutes of Health.



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