Active Recombinant Human IL4 Protein

• Cat.No.: IL4-067H
• Product Overview: The mature recombinant human IL-4 protein consists of 129 amino acids without tag was expressed in E. coli.

Specification

• Species: Human
• Source: E.coli
• 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. Two alternatively spliced transcript variants of this gene encoding distinct isoforms have been reported.
• Bio-activity: The ED50 as determined by the dose-dependant stimulation of TF-1 cells is < 0.2 ng/mL, corresponding to a Specific Activity of 5,000,000 IU/mg.
• Molecular Mass: 15 kDa
• Endotoxin: < 0.1 EU/μg of the protein as determined by the LAL method
• Purity: > 95 % as determined by SDS-PAGE
• Storage: At -80 centigrade. Avoid repeated freeze-thaw cycles.
• Storage Buffer: PBS

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; Names; 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