Biotinylated Mouse FOLR1, His Tag (FO1-M82E9) is expressed from human 293 cells (HEK293). It contains AA Thr 25 - Ser 232 (Accession # P35846-1).
Predicted N-terminus: Thr 25
This protein carries a polyhistidine tag at the C-terminus, followed by an Avi tag (Avitag™).
The protein has a calculated MW of 26.9 kDa. The protein migrates as 36 kDa and 44 kDa under reducing (R) condition (SDS-PAGE) due to glycosylation.
Biotinylation of this product is performed using Avitag™ technology. Briefly, the single lysine residue in the Avitag is enzymatically labeled with biotin.
The biotin to protein ratio is 0.5-1 as determined by the HABA assay.
Less than 1.0 EU per μg by the LAL method.
>95% as determined by SDS-PAGE.
Lyophilized from 0.22 μm filtered solution in PBS, pH7.4. Normally trehalose is added as protectant before lyophilization.
Contact us for customized product form or formulation.
Please see Certificate of Analysis for specific instructions.
For best performance, we strongly recommend you to follow the reconstitution protocol provided in the CoA.
For long term storage, the product should be stored at lyophilized state at -20°C or lower.
Please avoid repeated freeze-thaw cycles.
No activity loss is observed after storage at:
- 4-8°C for 12 months in lyophilized state;
- -70°C for 3 months under sterile conditions after reconstitution.
Biotinylated Mouse FOLR1, His Tag on SDS-PAGE under reducing (R) condition. The gel was stained overnight with Coomassie Blue. The purity of the protein is greater than 95%.
Immobilized Folic acid-BSA at 5 μg/mL (100 μL/well) can bind Biotinylated Mouse FOLR1, His Tag (Catalog # FO1-M82E9) with a linear range of 0.008-0.222 μg/mL.
Folate Receptor 1 (FOLR1) is also known as Folate receptor alpha, Folate Binding Protein (FBP), FOLR, and is a member of the folate receptor (FOLR) family. Members of this gene family have a high affinity for folic acid and for several reduced folic acid derivatives, and mediate delivery of 5-methyltetrahydrofolate to the interior of cells. Mature FOLR1 is an N-glycosylated protein that is anchored to the cell surface by a GPI linkage. FOLR1 is predominantly expressed on epithelial cells and is dramatically upregulated on many carcinomas. FOLR1 is internalized to the endosomal system where it dissociates from its ligand before recycling to the cell surface. A soluble form of FOLR1 can be proteolytically shed from the cell surface into the serum and breast milk. Defects in FOLR1 are the cause of neurodegeneration due to cerebral folate transport deficiency (NCFTD). NCFTD is an autosomal recessive disorder resulting from brain-specific folate deficiency early in life.
- (1) Lacey SW, et al., 1989, J. Clin. Invest. 84 (2): 715–20.
- (2) Elwood PC, 1989, J. Biol. Chem. 264 (25): 14893–901.
- (3) Rijnboutt, S. et al., 1996, J. Cell Biol. 132:35.
- (4) Parker, N. et al., 2005, Anal. Biochem. 338:284.
- (5) Paulos C M, et al., 2004, Mol Pharmacol. 2004;66:1406–1414.
- (6) Elwood PC., et al., 1991, J Biol Chem., 266(4): 2346-2353.
- (7) Dainty,L.A. et al., 2007, Gynecol Oncol. 105 (3):563-70.
Please contact us via TechSupport@acrobiosystems.com if you have any question on this product.
Limited Use License
The Biotin AviTag technology is covered by U.S. Pat. No: 5,874,239 and includes any and all materials, methods, kits and related derivatives claimed by this patent. The purchase of the Acrobiosystems’s Avitag™ proteins confers to the purchaser the limited right to use the Avitag™ technology for non-commercial, or research use, or for purposes of evaluating the Avitag™ technology.
Commercial use of the Avitag™ technology to manufacture a commercial product, or use of the Avitag™ technology to facilitate or advance research which will be applied to the development of a commercial product requires a license from Avidity, LLC. Examples of Commercial use include, but are not limited to biosensors, diagnostics, therapeutic applications, proximity assays, and drug screening assays.