IL4 (Human) Recombinant Protein
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Specification
Product Description
Human IL4 (P05112, His 25 - Ser 153) partial recombinant protein expressed in Escherichia coli.
Host
Escherichia coli
Theoretical MW (kDa)
15
Form
Lyophilized
Preparation Method
Escherichia coli expression system
Purification
Ion exchange column and HPLC reverse phase column
Purity
> 90% by SDS-PAGE and HPLC
Endotoxin Level
< 0.1 ng/ug (1 EU/ug)
Activity
The ED50 was determined by the dose-dependent stimulation of the proliferation of human TF-1 cells is <= 0.1 ng/mL, corresponding to a specific activity of >1 x 107 units/mg.
Storage Buffer
Lyophilized from 2.5% glycine, 0.5% sucrose, 0.01% Tween 80, 5 mM Glutamic acid, pH 4.5
Storage Instruction
Store at -20°C on dry atmosphere for 2 years.
After reconstitution with deionized water, store at 4°C for 1 month or store at -20°C for 6 months.
Aliquot to avoid repeated freezing and thawing. -
Applications
Functional Study
SDS-PAGE
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Gene Info — IL4
Entrez GeneID
3565Protein Accession#
P05112Gene Name
IL4
Gene Alias
BCGF-1, BCGF1, BSF1, IL-4, MGC79402
Gene Description
interleukin 4
Omim ID
147780Gene Ontology
HyperlinkGene Summary
The protein encoded by this gene is a pleiotropic cytokine produced by activated T cells. This cytokine is a ligand for interleukin 4 receptor. 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 a central role in mediating the immune regulatory signal of this cytokine. This gene, IL3, IL5, IL13, and CSF2 form a cytokine gene cluster on chromosome 5q, with this gene particularly close to IL13. This gene, IL13 and IL5 are found to be regulated coordinately by several long-range regulatory elements in an over 120 kilobase range on the chromosome. Two alternatively spliced transcript variants of this gene encoding distinct isoforms have been reported. [provided by RefSeq
Other Designations
B cell growth factor 1|B_cell stimulatory factor 1|lymphocyte stimulatory factor 1
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