IL-4 蛋白
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北京 101111
Quick Overview for IL-4 蛋白 (ABIN1305126)
抗原
See all IL-4 (IL4) 蛋白蛋白类型
生物活性
宿主
资源
应用范围
纯度
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特异性
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Biological Activity: The activity range is measured in a proliferation assay using TF-1 indicator cells
Specific Activity: 0.4 - 5.0 x 10^8 Units /mg
ED50: 20 - 250 pg/ml
Observed dose response relationship: 100 fold A Unit is defined as the amount of material required to stimulate a half-maximal response at cytokine saturation. Since applications vary, each investigator should titrate the reagent to obtain optimal results. -
产品特性
- Recombinant human IL-4 is supplied as a frozen liquid comprised of 0.22 µm sterile-filtered aqueous buffered solution, pH 7.2, and containing biotechnology grade, low endotoxin bovine serum albumin, with no preservatives. The human IL-4 was purified by immunoaffinity chromatography and was found to be > 95% pure by SDS-PAGE analysis, and an absorbance assay based on the Beers-Lambert law.
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纯化方法
- Immunoaffinity Chromatography
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过滤
- 0.22 μm filtered
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内毒素水平
- The endotoxin level is ≤ 0.1 ng per µg of human IL-4, as measured in a chromogenic LAL assay.
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Interleukin 4 (IL4) (AA 25-153) protein (His tag)
IL4 宿主: Cynomolgus 宿主: HEK-293 Cells Recombinant > 95 % as determined by Tris-Bis PAGE,> 95 % as determined by HPLC
Interleukin 4 (IL4) (AA 25-153) protein (His-Avi Tag,Biotin)IL4 宿主: 人 宿主: HEK-293 Cells Recombinant > 95 % as determined by Tris-Bis PAGE
Interleukin 4 (IL4) (AA 25-153) protein (His-Avi Tag)IL4 宿主: 人 宿主: HEK-293 Cells Recombinant > 95 % as determined by Tris-Bis PAGE
Interleukin 4 (IL4) (AA 23-140) (Active) proteinIL4 宿主: 小鼠 宿主: CHO Cells Recombinant > 95 % as analyzed by SDS-PAGE and HPLC. Active
Interleukin 4 (IL4) (AA 25-153) (Active) proteinIL4 宿主: 人 宿主: CHO Cells Recombinant > 95 % as analyzed by SDS-PAGE and HPLC. Active
Interleukin 4 (IL4) (AA 25-153) (Active) protein (His tag,AVI tag,Biotin)IL4 宿主: 人 宿主: HEK-293 Cells Recombinant >95 % as determined by SDS-PAGE. Active
Interleukin 4 (IL4) protein (His tag)IL4 宿主: 小鼠 宿主: 人细胞 Recombinant > 95 % as determined by SDS-PAGE
Interleukin 4 (IL4) (AA 25-153) (Active) protein (His tag)IL4 宿主: 人 宿主: 大肠杆菌（E. Coli） Recombinant Greater than 90 % as determined by SDS-PAGE. WB, ELISA Active
Interleukin 4 (IL4) (AA 63-153) protein (GST tag)IL4 宿主: 人 宿主: 小麦胚 Recombinant WB, ELISA, AA, AP
Interleukin 4 (IL4) (AA 25-153) protein (mFc Tag)IL4 宿主: 人 宿主: Mammalian Cells Recombinant The purity of the protein is greater than 95 % as determined by SDS-PAGE and Coomassie blue staining.
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应用备注
- ELISA Standard: Human IL-4, Cat. No. 554605, is useful as a quantitative standard for measuring human IL-4 protein levels in an IL-4 specific sandwich ELISA with the purified 8D4-8 antibody (Cat. No. 554515) as a capture antibody and the biotinylated MP4-25D2 (Cat. No. 554483) as the detection antibody. To obtain linear standard curves, doubling dilutions of this human IL-4 standard from ~1000 to 8 pg/ml should be included in each ELISA plate.
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说明
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BD Pharmingen™ Recombinant Human IL-4 - Reactivity Hu
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限制
- 仅限研究用
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状态
- Liquid
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浓度
- 100 μg/mL
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缓冲液
- Frozen aqueous buffered solution containing BSA.
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储存液
- Azide free
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注意事项
- This preparation contains no preservatives, thus it should be handled under aseptic conditions. Rapidly thaw and quick-spin product prior to use. Upon initial thawing, the product should be aliquoted into polypropylene microtubes and frozen at -80°C for future use. Alternatively, the product can be diluted in sterile neutral buffer containing not less than 0.5 - 10 mg/ml carrier protein such as human or bovine albumin, aliquoted and stored at -80°C. For in vitro biological assay use, we recommend carrier-protein concentrations of 1 - 2 mg/ml. For use as an ELISA standard we recommend carrier-protein concentrations of 5 - 10 mg/ml. Failure to add carrier protein or store at indicated temperatures may result in a loss of activity. The product should not be diluted to less than 50 µg/ml for long term storage. Carrier proteins should be pre-screened for possible effects in an appropriate experimental system. Carrier proteins may effect experimental results due to toxicity, high endotoxin levels or possible blocking activity.
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储存条件
- -80 °C
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储存方法
- Store product at -80°C prior to use or for long term storage of stock solutions. Rapidly thaw and quick-spin product prior to use. Avoid multiple freeze-thaws of product. This preparation contains no preservatives, thus it should be handled under aseptic conditions.
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: "Interleukin-4: a prototypic immunoregulatory lymphokine." in: Blood, Vol. 77, Issue 9, pp. 1859-70, (1991) (PubMed).
: "Isolation and characterization of a human interleukin cDNA clone, homologous to mouse B-cell stimulatory factor 1, that expresses B-cell- and T-cell-stimulating activities." in: Proceedings of the National Academy of Sciences of the United States of America, Vol. 83, Issue 16, pp. 5894-8, (1986) (PubMed).
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: "Interleukin-4: a prototypic immunoregulatory lymphokine." in: Blood, Vol. 77, Issue 9, pp. 1859-70, (1991) (PubMed).
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- IL-4 (IL4) (Interleukin 4 (IL4))
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别名
- IL-4
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背景
- Interleukin-4 (IL-4) is a potent multifunctional cytokine which can stimulate the growth, differentiation and maintain the viability of certain subsets of B cells and T cells. Human IL-4 is a 15 kD protein containing 129 amino acid residues. Recombinant human IL-4 (Cat No. 554605) is supplied as a frozen liquid comprised of 0.22 μm sterile-filtered aqueous buffered solution, containing bovine serum albumin, with no preservatives. Recombinant human IL-4 is ≥ 95 % pure as determined by SDS-PAGE, and an absorbance assay based on the Beers-Lambert law. The endotoxin level is ≤0.1 ng per μg of human IL-4, as measured in a chromogenic LAL assay.
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途径
- JAK/STAT Signaling, Regulation of Leukocyte Mediated Immunity, Positive Regulation of Immune Effector Process, Production of Molecular Mediator of Immune Response, Proton Transport, Activated T Cell Proliferation
抗原
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