IL-4

Recombinant Human Interleukin-4
- Product Type
- Recombinant Protein
- Specificity
- IL-4
Interleukin-4, also known as B-cell stimulatory factor 1, is a pleiotropic cytokine which interacts with multiple cell lineages, including T cells, fibroblasts and haematopoietic cells, and is one of the most important factors involved in B cell IgG1 and IgE class switching. Excessive secretion of IL-4 by Th2 helper cells, has been linked with allergy and elevated IgE levels. |
- Target Species
- Human
- Product Form
- Purified recombinant protein - lyophilized
- Reconstitution
- Pack Size: 5 µgReconstitute with 50 ul distilled water
Care should be taken during reconstitution as the protein may appear as a film at the bottom of the vial. Bio-Rad recommend that the vial is gently mixed after reconstitution.
For extended storage it is recommended to further dilute in a buffer containing 0.1% BSA.Pack Size: 20 µgReconstitute with 200 ul distilled water
Care should be taken during reconstitution as the protein may appear as a film at the bottom of the vial. Bio-Rad recommend that the vial is gently mixed after reconstitution. - Preparation
- Purified recombinant IL-4 expressed in E. coli
- Source
- E.coli
- Preservative Stabilisers
- None present
- Carrier Free
- Yes
- Activity
- The ED50 as determined by the dose-dependent stimulation of human TF-1 cells is ≤ 0.2 ng/ml, corresponding to a specific activity of ≥ 5 x 106 units/mg.
- Purity
- >98% by SDS PAGE and HPLC
- Approx. Protein Concentrations
- 0.1 mg/ml after reconstitution
- Protein Molecular Weight
- 14.9 kDa (129 amino acid residues)
- Endotoxin Level
- < 1.0 EU/ug
- Regulatory
- For research purposes only
- Guarantee
- Guaranteed for 3 months from the date of reconstitution or until the date of expiry, whichever comes first. Please see label for expiry date.
This product should be stored undiluted.
Storage in frost-free freezers is not recommended. Avoid repeated freezing and thawing as this may denature the protein. Should this product contain a precipitate we recommend microcentrifugation before use.
Application Name | Verified | Min Dilution | Max Dilution |
---|---|---|---|
ELISA | ![]() |
0.2 | 0.4ng/well |
Functional Assays | ![]() |
0.1 | 10.00ng/ml |
Western Blotting | ![]() |
1.5 | 3.0ng/lane |
- UniProt
- P05112
- Entrez Gene
- IL4
- GO Terms
- GO:0005125 cytokine activity
- GO:0005136 interleukin-4 receptor binding
- GO:0005615 extracellular space
- GO:0006935 chemotaxis
- GO:0006968 cellular defense response
- GO:0008083 growth factor activity
- GO:0008203 cholesterol metabolic process
- GO:0016563 transcription activator activity
- GO:0016564 transcription repressor activity
- View More GO Terms
- GO:0030183 B cell differentiation
- GO:0030890 positive regulation of B cell proliferation
- GO:0042092 type 2 immune response
- GO:0043066 negative regulation of apoptosis
- GO:0045189 connective tissue growth factor biosynthetic process
- GO:0045348 positive regulation of MHC class II biosynthetic process
- GO:0045671 negative regulation of osteoclast differentiation
- GO:0045944 positive regulation of transcription from RNA polymerase II promoter
- GO:0048295 positive regulation of isotype switching to IgE isotypes
- GO:0048304 positive regulation of isotype switching to IgG isotypes
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PHP234

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Please Note: All Products are "FOR RESEARCH PURPOSES ONLY"
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