Active Recombinant Human IL4 Protein, His-tagged

• Cat.No.: IL4-001H
• Product Overview: Recombinant human IL-4, fused to His-tag at C-terminus, was expressed in HEK293 cell and purified by using conventional chromatography techniques.

Specification

• Species: Human
• Source: HEK293
• Tag: His
• Description: 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. IL4 is considered an important cytokine for tissue repair, counterbalancing the effects of proinflammatory type 1 cytokines, however, it also promotes allergic airway inflammation. Moreover, IL-4, a type 2 cytokine, mediates and regulates a variety of human host responses such as allergic, anti-parasitic, wound healing, and acute inflammation. This cytokine has been reported to promote resolution of neutrophil-mediated acute lung injury. In an allergic response, IL-4 has an essential role in the production of allergen-specific immunoglobin (Ig) E. This pro-inflammatory cytokine has been observed to be increased in COVID-19 (Coronavirus disease 2019) patients, but is not necessarily associated with severe COVID-19 pathology.
• Form: Liquid
• Bio-activity: Measured in a cell proliferation assay using TF-1 human erythroleukemic cell. The ED50 range ≤ 0.5 ng/mL.
• Molecular Mass: 16.1 kDa
• AA Sequence: HKCDITLQEIIKTLNSLTEQKTLCTELTVTDIFAASKNTTEKETFCRAATVLRQFYSHHEKDTRCLGATAQQFHRHKQLIRFLKRLDRNLWGLAGLNSCPVKEANQSTLENFLERLKTIMREKYSKCSS
• Endotoxin: < 1 EU/μg of protein (determined by LAL method)
• Purity: > 90% by SDS-PAGE
• Applications: SDS-PAGE, Bioactivity
• Storage: Can be stored at +2 to +8 centigrade for 1 week. For long term storage, aliquot and store at -20 to -80 centigrade. Avoid repeated freezing and thawing cycles.
• Concentration: 0.5 mg/mL (determined by Absorbance at 280nm)
• Storage Buffer: Phosphate-Buffered Saline (pH 7.4) containing 10% glycerol

Gene Information

• Gene Name: IL4 interleukin 4 [ Homo sapiens (human) ]
• Official Symbol: IL4
• Synonyms: IL4; interleukin 4; BSF1; IL-4; BCGF1; BSF-1; BCGF-1; interleukin-4; B cell growth factor 1; B_cell stimulatory factor 1; binetrakin; interleukin 4 variant 2; lymphocyte stimulatory factor 1; pitrakinra
• Gene ID: 3565
• mRNA Refseq: NM_000589
• Protein Refseq: NP_000580
• MIM: 147780
• UniProt ID: P05112