Key features and details
- Expression system: Baculovirus infected insect cells
- Purity: > 95% SDS-PAGE
- Endotoxin level: < 1.000 Eu/µg
- Active: Yes
- Tags: His tag C-Terminus
- Suitable for: SDS-PAGE, Functional Studies
Product nameRecombinant human EPO-R protein (Active)
See all EPO-R proteins and peptides
Measured by its ability to inhibit EPO dependent proliferation using TF-1 human erythroleukemic cells. The ED50 for this effect is less or equal to 70ng/ml.
Purity> 95 % SDS-PAGE.
ab219430 was purified using conventional chromatography techniques.
Endotoxin level< 1.000 Eu/µg
Expression systemBaculovirus infected insect cells
Protein lengthProtein fragment
SequenceAPPPNLPDPKFESKAALLAARGPEELLCFTERLEDLVCFWEEAASAGVGP GNYSFSYQLEDEPWKLCRLHQAPTARGAVRFWCSLPTADTSSFVPLELRV TAASGAPRYHRVIHINEVVLLDAPVGLVARLADESGHVVLRWLPPPETPM TSHIRYEVDVSAGNGAGSVQRVEILEGRTECVLSNLRGRTRYTFAVRARM AEPSFGGFWSAWSEPVSLLTPSDLDPHHHHHH
Predicted molecular weight26 kDa including tags
Amino acids25 to 250
TagsHis tag C-Terminus
Additional sequence informationExtracellular domain (NP_000112.1).
Our Abpromise guarantee covers the use of ab219430 in the following tested applications.
The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.
Previously labelled as EPO Receptor.
Concentration information loading...
Preparation and Storage
Stability and Storage
Shipped at 4°C. Store at +4°C short term (1-2 weeks). Upon delivery aliquot. Store at -20°C or -80°C. Avoid freeze / thaw cycle.
Constituents: 10% Glycerol (glycerin, glycerine), 90% PBS
This product is an active protein and may elicit a biological response in vivo, handle with caution.
- EPO R
- EPO Receptor
FunctionReceptor for erythropoietin. Mediates erythropoietin-induced erythroblast proliferation and differentiation. Upon EPO stimulation, EPOR dimerizes triggering the JAK2/STAT5 signaling cascade. In some cell types, can also activate STAT1 and STAT3. May also activate the LYN tyrosine kinase.
Isoform EPOR-T acts as a dominant-negative receptor of EPOR-mediated signaling.
Tissue specificityErythroid cells and erythroid progenitor cells. Isoform EPOR-F is the most abundant form in EPO-dependent erythroleukemia cells and in late-stage erythroid progenitors. Isoform EPOR-S and isoform EPOR-T are the predominant forms in bone marrow. Isoform EPOR-T is the most abundant from in early-stage erythroid progenitor cells.
Involvement in diseaseDefects in EPOR are the cause of erythrocytosis familial type 1 (ECYT1) [MIM:133100]. ECYT1 is an autosomal dominant disorder characterized by increased serum red blood cell mass, elevated hemoglobin and hematocrit, hypersensitivity of erythroid progenitors to erythropoietin, erythropoietin low serum levels, and no increase in platelets nor leukocytes. It has a relatively benign course and does not progress to leukemia.
Sequence similaritiesBelongs to the type I cytokine receptor family. Type 1 subfamily.
Contains 1 fibronectin type-III domain.
DomainThe WSXWS motif appears to be necessary for proper protein folding and thereby efficient intracellular transport and cell-surface receptor binding.
The box 1 motif is required for JAK interaction and/or activation.
Contains 1 copy of a cytoplasmic motif that is referred to as the immunoreceptor tyrosine-based inhibitor motif (ITIM). This motif is involved in modulation of cellular responses. The phosphorylated ITIM motif can bind the SH2 domain of several SH2-containing phosphatases.
modificationsOn EPO stimulation, phosphorylated on C-terminal tyrosine residues by JAK2. The phosphotyrosine motifs are also recruitment sites for several SH2-containing proteins and adapter proteins which mediate cell proliferation. Phosphorylation on Tyr-454 is required for PTPN6 interaction, Tyr-426 for PTPN11. Tyr-426 is also required for SOCS3 binding, but Tyr-454/Tyr-456 motif is the preferred binding site.
Ubiquitinated by NOSIP; appears to be either multi-monoubiquitinated or polyubiquitinated. Ubiquitination mediates proliferation and survival of EPO-dependent cells.
Cellular localizationCell membrane and Secreted. Secreted and located to the cell surface.
- Information by UniProt
To our knowledge, customised protocols are not required for this product. Please try the standard protocols listed below and let us know how you get on.
ab219430 has not yet been referenced specifically in any publications.