Reactivity | HuSpecies Glossary |
Applications | ELISA |
Conjugate | HRP |
Background | The Quantikine Human FOLR1 Immunoassay is a 4.5 hour solid-phase ELISA designed to measure human FOLR1 in cell culture supernates, serum, plasma, saliva, urine, and human milk. It contains CHO cell-expressed recombinant human FOLR1 and has been shown to accurately quantitate the recombinant factor. Results obtained using natural human FOLR1 showed linear curves that were parallel to the stan...dard curves obtained using the Quantikine kit standards. These results indicate that this kit can be used to determine relative mass values for naturally occurring human FOLR1. Show More |
Specificity | Natural and recombinant human FOLR1. This assay recognizes recombinant human FOLR1 in the presence of folic acid. |
Source | N/A |
Assay Type | Solid Phase Sandwich ELISA |
Inter-Assay | See PDF Datasheet for details |
Intra-Assay | See PDF Datasheet for details |
Spike Recovery | See PDF Datasheet for details |
Sample Volume | See PDF Datasheet for details |
Gene | FOLR1 |
Dilutions |
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Application Notes | No significant interference observed with available related molecules. |
Storage | Store the unopened product at 2 - 8 °C. Do not use past expiration date. |
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. Mature FOLR1 is an N-glycosylated protein that is anchored to the cell surface by a GPI linkage. Human FOLR1 shares 83 percent amino acid sequence identity with mouse and rat FOLR1. FOLR1 is predominantly expressed on epithelial cells and is dramatically up-regulated on many carcinomas. It is critically required during early embryogenesis as shown in knockout mice which die in utero with gross morphological defects. 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.
Gene Symbol | FOLR1 |