IL-5 Protein, Human, Recombinant

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IL-5 Protein, Human, Recombinant: Product Information

Purity
> 95 % as determined by SDS-PAGE
Endotoxin
Please contact us for more information.
Activity
Measured in a cell proliferation assay using TF-1 human erythroleukemic cells.
The ED50 for this effect is typically 0.2-1.5 ng/ml.
Protein Construction
A DNA sequence encoding the human IL5 (P05113) (Ile20-Ser134) was expressed.
Accession#
Expressed Host
E. coli
Species
Human
Predicted N Terminal
Ile 20
Molecule Mass
The recombinant human IL5 consists of 115 amino acids and predicts a molecular mass of 13.1 KDa. It migrates as an approximately 27 KDa band in SDS-PAGE under non-reducing conditions.
Formulation
Lyophilized from sterile PBS, pH 7.4.
Please contact us for any concerns or special requirements.
Normally 5 % - 8 % trehalose, mannitol and 0.01% Tween80 are added as protectants before lyophilization.
Please refer to the specific buffer information in the hard copy of CoA.
Shipping
In general, recombinant proteins are provided as lyophilized powder which are shipped at ambient temperature.
Bulk packages of recombinant proteins are provided as frozen liquid. They are shipped out with blue ice unless customers require otherwise.
Stability & Storage
Samples are stable for up to twelve months from date of receipt at -20℃ to -80℃
Store it under sterile conditions at -20℃ to -80℃. It is recommended that the protein be aliquoted for optimal storage. Avoid repeated freeze-thaw cycles.
Reconstitution
A hardcopy of COA with reconstitution instruction is sent along with the products. Please refer to it for detailed information.

IL-5 Protein, Human, Recombinant: Images

Measured in a cell proliferation assay using TF-1 human erythroleukemic cells. The ED50 for this effect is typically 0.2-1.5 ng/ml.

IL-5 Protein, Human, Recombinant: Alternative Names

EDF Protein, Human; IL-5 Protein, Human; Interleukin 5 Protein, Human; TRF Protein, Human

IL-5 Background Information

Interleukin 5 (IL-5) is a member of the interleukin family with length of 115 amino acids. Interleukins are a group of cytokines (secreted proteins / signaling molecules) that were first seen to be expressed by white blood cells (leukocytes) and has been found in a wide variety of body cells. Interleukin 5 or IL-5 is produced by T helper-2 cells and mast cells. It helps to stimulate B cell growth and increase immunoglobulin secretion and is considered as a key mediator in eosinophil activation. Interleukin 5 (IL-5) has long been associated with several allergic diseases, including allergic rhinitis and asthma. Growth in the number of circulating, airway tissue, and induced sputum eosinophils have been observed in patients with these diseases. IL-5 also had something with the terminally differentiated granulocyte eosinophils. IL-5 was originally found as an eosinophil colony stimulating factor. It has been proved to be a major regulator of eosinophil accumulation in tissues, and can modulate eosinophil behavior at every stage from maturation to survival.
Full Name
interleukin 5
References
  • Milburn MV, et al. (1993) A novel dimer configuration revealed by the crystal structure at 2.4 A resolution of human interleukin-5. Nature. 363(6425): 172-176.
  • Lee JS, et al. (1989) The IL-4 and IL-5 genes are closely linked and are part of a cytokine gene cluster on mouse chromosome 11. Somat Cell Mol Genet. 15(2): 143-152.
  • Woodcock JM, et al. (1994) Three residues in the common beta chain of the human GM-CSF, IL-3 and IL-5 receptors are essential for GM-CSF and IL-5 but not IL-3 high affinity binding and interact with Glu21 of GM-CSF. EMBO J. 13 (21): 5176-85.
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