Recombinant Human IL-5 Protein Summary
Description |
A disulfide-linked homodimeric protein containing two 116 amino acid chains corresponding to IL-5 Source: E. coli Uniprot ID: P05113 Amino Acid Sequence: MIPTEIPTSA LVKETLALLS THRTLLIANE TLRIPVPVHK NHQLCTEEIF QGIGTLESQT VQGGTVERLF KNLSLIKKYI DGQKKKCGEE RRRVNQFLDY LQEFLGVMNT EWIIES |
Details of Functionality |
IL5 Protein is fully biologically active when compared to standard. The ED50 as determined by a cell proliferation assay using human TF-1 cells is less than 0.1 ng/ml, corresponding to a specific activity of > 1.0 x 10^7 IU/mg. |
Source |
E. coli |
Protein/Peptide Type |
Recombinant Protein |
Gene |
IL5 |
Purity |
> 98 % pure by SDS-PAGE and HPLC |
Endotoxin Note |
Less than 1 EU/ug of IL-5 as determined by LAL method. |
Applications/Dilutions
Dilutions |
|
Theoretical MW |
26.5 kDa. Disclaimer note: The observed molecular weight of the protein may vary from the listed predicted molecular weight due to post translational modifications, post translation cleavages, relative charges, and other experimental factors. |
Packaging, Storage & Formulations
Storage |
Store at -20 to -70C as supplied. After reconstitution, store at 2 to 8C for 1 month and at -20 to -70C for long term storage. Avoid repeated freeze-thaw cycles. |
Buffer |
Lyophilized from a 0.2 um filtered concentrated solution in 20mM PB, pH 7.5, 3 % trehalose, 0.1 % Tween-80. |
Preservative |
Trehalose |
Concentration |
LYOPH |
Purity |
> 98 % pure by SDS-PAGE and HPLC |
Reconstitution Instructions |
Recommended to centrifuge prior to opening. Reconstitute in sterile distilled water or aqueous buffer containing 0.1% BSA to a concentration of 0.1-1.0mg/mL. Apportion stock solutions into working aliquots and store at <-20C. |
Notes
This lyophilized preparation is stable for 12 months from date of receipt at -20 to -70 degrees C, preferably desiccated. Upon reconstitution, the preparation can be stored for 1 month at 2-8 degrees C under sterile conditions, and for 3 months at -20 degrees C to -70 degrees C. Use a manual defrost freezer and avoid repeated freeze-thaw cycles. Stock solutions should be aliquoted and stored at < -20 degrees C. Further dilutions should be made in appropriate buffered solutions
Alternate Names for Recombinant Human IL-5 Protein
Background
The IL-5 gene is located on chromosome 5 in humans, in close proximity to the genes encoding IL-3, IL-4, and granulocytemacrophage colony-stimulating factor (GM-CSF), which are often co-expressed in TH2 cells. Through binding to the IL-5 receptor, IL-5 stimulates B cell growth and increases immunroglobulin secretion. It is also a key mediator in eosinophil activation. Interleukin-5 has long been associated with the cause of several allergic diseases including allergic rhinitis and asthma. IL-5 is a 115-amino acid (in human, 133 in the mouse) -long TH2 cytokine that is part of the hematopoietic family. Unlike other members of this cytokine family (namely IL-3 and GM-CSF), this glycoprotein in its active form is a homodimer.
Limitations
This product is for research use only and is not approved for use in humans or in clinical diagnosis. Peptides and proteins are
guaranteed for 3 months from date of receipt.
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