विवरण
Interleukin-4 (IL-4), also known as B cell-stimulatory factor-1, is a monomeric, approximately 13 kDa-18 kDa Th2 cytokine that shows pleiotropic effects during immune responses. It is a glycosylated polypeptide that contains three intrachain disulfide bridges and adopts a bundled four alpha -helix structure. Rhesus IL-4 is synthesized with a 24 amino acid (aa) signal sequence. Mature rhesus IL-4 shares 97%, 93%, and 93% aa sequence identity with baboon, chimpanzee, and human IL-4, respectively, and 39% -50% aa sequence identity with bovine, mouse, and rat IL-4. IL-4 exerts its effects through two receptor complexes. The type I receptor, which is expressed on hematopoietic cells, is a heterodimer of the ligand binding IL-4 R alpha and the common gamma chain (a shared subunit of the receptors for IL-2, -7, -9, -15, and -21). The type II receptor on nonhematopoietic cells consists of IL-4 R alpha and IL-13 R alpha 1. The type II receptor also transduces IL-13 mediated signals. IL-4 is primarily expressed by Th2-biased CD4+ T cells, mast cells, basophils, and eosinophils. It promotes cell proliferation, survival, and immunoglobulin class switch to IgE in B cells, acquisition of the Th2 phenotype by naïve CD4+ T cells, priming and chemotaxis of mast cells, eosinophils, and basophils, and the proliferation and activation of epithelial cells. IL-4 plays a dominant role in the development of allergic inflammation and asthma .
Product Properties
|
Synonyms |
BSF-1, Lymphocyte Stimulatory Factor 1 |
|
Accession |
P51492 |
|
Unigene |
Mmu.3375. |
|
Source |
E.coli-derived Rhesus Macaque IL-4, His25-Ser153. |
|
Molecular Weight |
Approximately 14.9 kDa. |
|
AA Sequence |
HNCHIALREI IETLNSLTEQ KTLCTKLTIT DILAASKNTT EKETFCRAAT VLRQFYSHHE KDTRCLGATA QQFHRHKQLI RFLKRLDRNL WGLAGLNSCP VKEANQSTLE DFLERLKTIM REKYSKCSS |
|
Tag |
None |
|
Physical Appearance |
Sterile Filtered White lyophilized (freeze-dried) powder. |
|
Purity |
> 96% by SDS-PAGE and HPLC analyses. |
|
Biological Activity |
The ED50 as determined by a cell proliferation assay using human TF-1 cells is less than 1.0 ng/mL, corresponding to a specific activity of > 1.0 × 106 IU/mg. Fully biologically active when compared to standard. |
|
Endotoxin |
< 1.0 EU per 1 μg of the protein by the LAL method. |
|
Formulation |
Lyophilized from a 0.2 μm filtered concentrated solution in 2 × PBS, pH 7.4, 5% trehalose. |
|
Reconstitution |
We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Reconstitute in sterile distilled water or aqueous buffer containing 0.1% BSA to a concentration of 0.1-1.0 mg/mL. Stock solutions should be apportioned into working aliquots and stored at ≤ -20°C. Further dilutions should be made in appropriate buffered solutions. |
Shipping and Storage
The products are shipped with ice pack and can be stored at -20℃ to -80℃ for 1 year.
Recommend to aliquot the protein into smaller quantities when first used and avoid repeated freeze-thaw cycles.
Cautions
1. Avoid repeated freeze-thaw cycles.
2. For your safety and health, please wear lab coats and disposable gloves for operation.
3. For research use only!
भुगतान और सुरक्षा
आपकी भुगतान जानकारी सुरक्षित रूप से संसाधित की जाती है। हम क्रेडिट कार्ड के विवरण को संग्रहीत नहीं करते हैं और न ही आपके क्रेडिट कार्ड की जानकारी तक पहुंच है।
जाँच करना
आपको यह भी पसंद आ सकता हैं
उपवास
यह उत्पाद केवल शोध उद्देश्यों के लिए है और मनुष्यों या जानवरों में चिकित्सीय या नैदानिक उपयोग के लिए अभिप्रेत नहीं है। उत्पाद और सामग्री येसेन बायोटेक्नोलॉजी के स्वामित्व वाले पेटेंट, ट्रेडमार्क और कॉपीराइट द्वारा संरक्षित हैं। ट्रेडमार्क प्रतीक मूल देश को इंगित करते हैं, जरूरी नहीं कि सभी क्षेत्रों में पंजीकरण हो।
कुछ अनुप्रयोगों के लिए अतिरिक्त तृतीय-पक्ष बौद्धिक संपदा अधिकारों की आवश्यकता हो सकती है।
येसेन नैतिक विज्ञान के प्रति समर्पित हैं, उनका मानना है कि हमारे शोध में सुरक्षा और नैतिक मानकों को सुनिश्चित करते हुए महत्वपूर्ण प्रश्नों का समाधान किया जाना चाहिए।