IL-5R alpha/CD125 Protein, Human, Recombinant (aa 21-335, His） is expressed in HEK293 mammalian cells with C-6xHis tag. The predicted molecular weight is 45-60 KDa and the accession number is Q01344.
| 説明 |
IL-5R alpha/CD125 Protein, Human, Recombinant (aa 21-335, His） is expressed in HEK293 mammalian cells with C-6xHis tag. The predicted molecular weight is 45-60 KDa and the accession number is Q01344. |
| Species |
Human
|
| Expression Host |
HEK293 Cells
|
| Tag |
C-6xHis
|
| Accession Number |
Q01344
|
| 別名 |
IL-5R subunit alpha, IL5RA, CD125, IL-5 receptor subunit α, Interleukin-5 receptor subunit alpha, IL-5R-alpha, CDw125, IL-5 receptor subunit alpha, IL-5R subunit α, IL5R, IL-5RA, IL-5R-α, Interleukin-5 receptor subunit α
|
| Amino Acid |
Asp21-Glu335
|
| Construction |
Asp21-Glu335
|
| Protein Purity |
Greater than 95% as determined by reducing SDS-PAGE. Greater than 95% as determined by SEC-HPLC.
|
| 分子量 |
45-60 KDa, reducing conditions
|
| Endotoxin |
< 0.1 ng/µg (1 EU/µg) as determined by LAL test.
|
| Formulation |
Lyophilized from a solution filtered through a 0.22 μm filter, containing PBS, pH 7.4.
|
| Reconstitution |
Reconstitute the lyophilized protein in distilled water. The product concentration should not be less than 100 μg/ml. Before opening, centrifuge the tube to collect powder at the bottom. After adding the reconstitution buffer, avoid vortexing or pipetting for mixing.
|
| Stability & Storage |
Lyophilized powders can be stably stored for over 12 months, while liquid products can be stored for 6-12 months at-80℃. For reconstituted proteinsolutions, the solution can be stored at -20°c to -80'c for at least 3 months. Please avoid multiple freeze-thaw cycles and store products in aliquots.
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| Shipping |
In general, Lyophilized powders are shipping with blue ice. Solutions are shipping with dry ice.
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| Research Background |
Interleukin-5 Receptor alpha (IL-5Rα, CD125) is a 60 kDa hematopoietin receptor that plays a dominant role in eosinophil biology. Mature human IL-5 Rα consists of a 322 aa extracellular domain (ECD) with a WSxWS motif and a four cysteine motif, a 20 aa transmembrane segment, and a 58 aa cytoplasmic domain. Within the ECD, human IL-5Rα shares 71% aa sequence identity with mouse and rat IL-5 Rα. Alternate splicing of human IL-5 Rα generates soluble secreted forms which function as IL-5 antagonists. The high affinity receptor for IL-5 is a complex that consists of the ligand binding IL-5 Rα and the transmembrane common β chain (βc/CD131) which is shared with the receptor complexes for IL-3 and GMCSF. IL-5 Rα binds IL-5 at low affinity and then associates with preformed βc oligomers to form the signaling competent receptor complex. IL-5 stimulation of CD34+ hematopoietic progenitor cells induces the up-regulation of transmembrane IL-5Rα followed by eosinophilic differentiation and activation.
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