Recombinant Human FOLR2 Protein, CF

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Product Details

Summary
Reactivity HuSpecies Glossary
Applications Binding Activity
Format
Carrier-Free

Order Details

Recombinant Human FOLR2 Protein, CF Summary

Details of Functionality
Measured by its binding ability in a functional ELISA. When Folic Acid-Bovine Serum Albumin was coated at 5 μg/mL (100 μL/well), the concentration of Recombinant Human FOLR-2 that produces 50% of the optimal binding response was found to be <1 nM.
Source
Chinese Hamster Ovary cell line, CHO-derived human FOLR2 protein
Gln22-His228, with a C-terminal 6-His tag
Accession #
N-terminal Sequence
No results obtained: Gln22 predicted
Protein/Peptide Type
Recombinant Proteins
Gene
FOLR2
Purity
>95%, by SDS-PAGE under reducing conditions and visualized by silver stain.
Endotoxin Note
<0.01 EU per 1 μg of the protein by the LAL method.

Applications/Dilutions

Dilutions
  • Binding Activity
Theoretical MW
25.4 kDa.
Disclaimer note: The observed molecular weight of the protein may vary from the listed predicted molecular weight due to post translational modifications, post translation cleavages, relative charges, and other experimental factors.
SDS-PAGE
25-40 kDa, reducing conditions

Packaging, Storage & Formulations

Storage
Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
  • 12 months from date of receipt, -20 to -70 °C as supplied.
  • 1 month, 2 to 8 °C under sterile conditions after reconstitution.
  • 3 months, -20 to -70 °C under sterile conditions after reconstitution.
Buffer
Lyophilized from a 0.2 μm filtered solution in PBS.
Purity
>95%, by SDS-PAGE under reducing conditions and visualized by silver stain.
Reconstitution Instructions
Reconstitute at 100 μg/mL in PBS.

Notes

This product is produced by and ships from R&D Systems, Inc., a Bio-Techne brand.

Alternate Names for Recombinant Human FOLR2 Protein, CF

  • beta-HFR
  • FBP
  • FBP/PL-1
  • folate receptor 2 (fetal)
  • Folate receptor 2
  • folate receptor beta
  • folate receptor, beta
  • Folate receptor, fetal/placental
  • folate-binding protein, fetal/placental
  • FOLR2
  • FR-beta
  • FR-P3
  • Placental folate-binding protein

Background

Folate Receptor 2 (FOLR2), also known as Folate Receptor beta, is a 38 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 (1, 2). Mature FOLR2 is an N-glycosylated protein that is anchored to the cell surface by a GPI linkage (3, 4). Human FOLR2 shares 83% amino acid sequence identity with mouse and rat FOLR2. FOLR2 is predominantly expressed in placenta, cells of the neutrophilic lineage, and some CD34+ hematopoietic progenitor cells (4 - 6). It is upregulated on myeloid  leukemias, head and neck squamous cell carcinomas, and several nonepithelial cancers (3, 5, 7). It is also upregulated on macrophages and monocytes at chronic inflammatory sites including rheumatoid arthritis synovium and glioblastoma (8 - 10). FOLR2 knockout mice do not show gross morphological defects, but they exhibit increased sensitivity to arsenate-induced teratogenicity (11, 12).
  1. Fowler, B. et al. (2001) Kidney Int. 59:S-221.
  2. Kelemen, L.E. (2006) Int. J. Cancer 119:243.
  3. Shen, F. et al. (1994) Biochemistry 33:1209.
  4. Ratnam, M. et al. (1989) Biochemistry 28:8249.
  5. Ross, J.F. et al. (1999) Cancer 85:348.
  6. Reddy, J.A. et al. (1999) Blood 93:3940.
  7. Ross, J.F. et al. (1994) Cancer 73:2432.
  8. Nakashima-Matsushita, N. et al. (1999) Arthritis Rheum. 42:1609.
  9. van der Heijden, J.W. et al. (2009) Arthritis Rheum. 60:12.
  10. Nagai, T. et al. (2009) Cancer Immunol. Immunother. Feb 24 epub.
  11. Piedrahita, J.A. et al. (1999) Nat. Genet. 23:228.
  12. Wlodarczyk, B. et al. (2001) Toxicol. Appl. Pharmacol. 177:238.

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Bioinformatics

Gene Symbol FOLR2
Uniprot