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Invitrogen
Bovine IL-4 Recombinant Protein
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Product Details
RBOIL4I
Product Specifications
Species
Bovine
Expression System
P. pastoris
Amino acid sequence
aa 25-135
Molecular weight
12.6 kDa
Class
Recombinant
Type
Protein
Activity
ED50 = 0.44 - 0.67 ng/mL; determined by the dose-dependent proliferation of human TF-1 cells.
Conjugate
Form
Lyophilized
Amount
20 µg
Purification
purified
Storage buffer
PBS
Contains
no preservative
Storage conditions
4°C
Shipping conditions
Wet ice
Product Specific Information
For dilution, use a buffer containing carrier protein, e.g. PBS with 1% BSA or a neutral media containing 10% FCS and freeze in aliquots at -70°C.
Activity: The biological activity of recombinant bovine IL-4 was determined by measuring the proliferation of the factor-dependent human T-helper cell line, TF-1 (Kitamura, T. et al. (1989) J. Cell Physiol. 140:323). The ED50 (or 1 unit of activity) for this effect in our laboratories typically falls into the range of 0.44 - 0.67 ng/mL.
Expression: Mature bovine IL-4 was expressed in Pichia pastoris, X-33. GenBank® Accession # P30367, amino acids 25 - 135. For protein verification, the expressed protein was N-terminal sequenced and begins with the following 10 amino acids: HKCDITLAEI.
Reconstitute with 0.5 mL of distilled water.
Target Information
Interleukin-4 (IL-4) is a pleiotropic, immune-modulatory cytokine produced by activated T cells, and serves as a ligand for interleukin 4 receptor. IL-4 has been found to have the broadest range of actions. The interleukin 4 receptor also binds to IL13, which may contribute to many overlapping functions of this cytokine and IL13. STAT6, a signal transducer and activator of transcription, has been shown to play an important role in mediating the immune regulatory signal of IL-4. The IL-4 gene, IL-3, IL-5, IL-13, and CSF2 form a cytokine gene cluster on chromosome 5q. In particular, IL-4 is located in close proximity to IL13 on the chromosome. Further, the IL-4 gene, IL13 and IL5 are found to be coordinated by several long-range regulatory elements over a 120 kilobase range on the chromosome. IL-4 delta 2 is a known splice variant of IL-4.
For Research Use Only. Not for use in diagnostic procedures. Not for resale without express authorization.
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Bioinformatics
Protein Aliases: B-cell stimulatory factor 1; BSF-1; H-IL-4; IL-4; ILN; Interleukin; Interleukin-4; Interleukin4; Lymphocyte stimulatory factor 1; M-IL-4; MGC79402
Gene Aliases: BSF-1; IL-4; IL4
UniProt ID: (Bovine) P30367
Entrez Gene ID: (Bovine) 280824
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