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Synonyms
EPOR, Erythropoietin Receptor.
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Alternative_names
EPOR, Erythropoietin Receptor.
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Description
A major glycoprotein hormone regulator of mammalian erythropoiesis
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Recombinant
Yes
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Source
HEK293 cells
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Purity by SDS PAGE
≥92%
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Assay
SDS-PAGE
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Biological activity
Measured by its ability to inhibit Epo-dependent proliferation of TF‑1 human erythroleukemic cells. The ED50 for this effect is typically 2 - 6 ng/ml in the presence of 0.2 U/ml of rhEpo-Fc.
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Results
Measured by its ability to inhibit Epo-dependent proliferation of TF‑1 human erythroleukemic cells. The ED50 for this effect is typically 2 - 6 ng/ml in the presence of 0.2 U/ml of rhEpo-Fc.
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Molecular Weight
This protein is fused with Fc fragment of human IgG1 at the C-terminus, has a calculated MW of 50.1 kDa. The predicted N-terminus is Ala 25. DTT-reduced Protein migrates as 55-60 kDa due to glycosylation.
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Storage Temp
-20°C
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Shipping
Gel Pack
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Shelf Life
12 months
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Appearance
Lyophilized
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Physical form description
Lyophilized from 0.22 um filtered solution in 50 mM tris, 100 mM glycine, pH 7.0. Normally Mannitol or Trehalose is added as protectants before lyophilization.
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Reconstitution Instructions
Centrifuge the vial prior to opening. Reconstitute in sterile PBS, pH 7.4 to a concentration of 50 µg/ml. Do not vortex. This solution can be stored at 2-8°C for up to 1 month. For extended storage, it is recommended to store at -20°C.
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Background Information
Erythropoietin (EPO) is the major glycoprotein hormone regulator of mammalian erythropoiesis, and is produced by kidney and liver in an oxygen-dependent manner. The biological effects of EPO are mediated by the specific erythropoietin receptor (EPOR) on bone marrow erythroblasts, which transmits signals important for both proliferation and differentiation along the erythroid lineage. EPOR is a type 1 single-transmembrane cytokine receptor, and belongs to the homodimerizing subclass which functions as ligand-induced or ligand-stabilized homodimers. EPOR pre-exists as dimers which upon binding of a 34 kDa ligand erythropoietin (EPO), changes its homodimerized state. These conformational changes result in the autophosphorylation of Jak2 kinases that are pre-associated with the receptor. Erythropoietin is necessary to maintain endothelial cells and to promote tumor angiogenesis, hence the dysregulation of EpoR may affect the growth of certain tumors. EpoR signaling prevents neuronal death and ischemic injury.
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Handling
Centrifuge the vial prior to opening.
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Usage
For Research Use Only! Not to be used in humans
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Properties
Human proteins, cDNA and human recombinants are used in human reactive ELISA kits and to produce anti-human mono and polyclonal antibodies. Modern humans (Homo sapiens, primarily ssp. Homo sapiens sapiens). Depending on the epitopes used human ELISA kits can be cross reactive to many other species. Mainly analyzed are human serum, plasma, urine, saliva, human cell culture supernatants and biological samples.
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Additional description
The receptors are ligand binding factors of type 1, 2 or 3 and protein-molecules that receive chemical-signals from outside a cell. When such chemical-signals couple or bind to a receptor, they cause some form of cellular/tissue-response, e.g. a change in the electrical-activity of a cell. In this sense, am olfactory receptor is a protein-molecule that recognizes and responds to endogenous-chemical signals, chemokinesor cytokines e.g. an acetylcholine-receptor recognizes and responds to its endogenous-ligand, acetylcholine. However, sometimes in pharmacology, the term is also used to include other proteins that are drug-targets, such as enzymes, transporters and ion-channels.
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Additional source
Recombinants or rec. proteins
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Group
recombinants