Recombinant Canine IL-4 Animal-Free Protein

SDS-Page: Recombinant Canine IL-4 Animal-Free Protein [NBP2-76291] - 1 ug in each lane (-) non-reducing conditions and (+) reducing conditions in a 4-20% Tris-Glycine gel.

Bioactivity: Recombinant Canine IL-4 Animal-Free Protein [NBP2-76291] - IL-4 induced proliferation of TF-1 cells.

Product Discontinued

Recombinant Canine IL-4 Animal-Free Protein Summary

• Description: For prolonged storage, dilute to working aliquots.
  
  Expiration Date:
  12 months from date of receipt when stored at -20C to-80C as supplied. 1 month when stored at 4C after reconstituting as directed. 3 months when stored at -20C to -80C after reconstituting as directed.
• Specificity: IL-4 is a monomer, 12.9 kDa (109 aa)
• Preparation Method: Protein is derived from genetically modified E. coli.
• Details of Functionality: TF-1 cell proliferation, >4.0 x 10^4 units/mg (ED50 acceptance criteria are <25 ng/mL).
• Source: E. coli
• Protein/Peptide Type: Recombinant Protein
• Gene: IL4
• Purity: >95%, by SDS-PAGE
• Endotoxin Note: Acceptance criteria for endotoxin levels are <1 EUs/ug protein (determined by Kinetic LAL Method).

Applications/Dilutions

• Dilutions:
  • Bioactivity
  • SDS-Page
• Application Notes: Lot Specific Information:
  Given endotoxin and ED50 values are acceptance criteria standards. For lot specific values, please contact technical support.
• Theoretical MW: 12.9 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 sterile (0.2 micron) filtered aqueous solution containing 0.1% Trifluoroacetic Acid (TFA)
• Preservative: No Preservative
• Concentration: LYOPH
• Purity: >95%, by SDS-PAGE
• Reconstitution Instructions: Sterile water at 0.1 mg/mL

Alternate Names for Recombinant Canine IL-4 Animal-Free Protein

• B cell growth factor 1
• BCDF
• B-cell stimulatory factor 1
• BCGF1
• BCGF-1
• binetrakin
• BSF1
• BSF-1
• IL4
• IL-4
• IL-4B_cell stimulatory factor 1
• IL4E12
• interleukin 4
• interleukin-4
• Lymphocyte stimulatory factor 1
• MGC79402
• pitrakinra

Background

IL-4 (Interleukin 4, B cell stimulatory factor) is a pleiotropic cytokine produced by activated T cells, mast cells and basophils. IL-4 has many different functions including promoting proliferation and differentiation of immunologically competent cells. One of its main functions is regulating differentiation of naive CD4+ T cells into helper Th2 cells, the other main function is regulating B cells IgE and IgG1 production. Human IL-4 shows 50% homology with mouse IL-4, but its activities are species-specific and human IL-4 shows no activity on murine and rat cells.

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.

Bioinformatics

• Gene Symbol: IL4