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- 产品名称：重组人白细胞介素-9蛋白
- 产品型号：rHuIL-9
- 产品展商：KALANG
- 产品文档：无相关文档
- 发布时间：2018-06-18
- 在线询价
简单介绍
重组人白细胞介素-9蛋白与其它公司提供的重组蛋白不同，rHuIL-9蛋白产品为采用CFS的无细胞麦胚蛋白合成系统表达出来的重组蛋白，可表达出对细胞有毒性、易被蛋白酶降解的蛋白；并获得具有良好的可溶性，并有翻译后修饰、从而部分具有功能的蛋白.同时独有的全自动蛋白纯化技术则简便高效，将蛋白纯化过程中对蛋白的损伤降低到*小程度.重组人白细胞介素-9蛋白（全长序列）产品可用于Western Blot验证、抗体制备、蛋白检测、ELISA等试验中.
产品描述
重组人白细胞介素-9蛋白
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Synonyms
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Cytokine P40, T-cell Growth Factor P40
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Species
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Human
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Accession
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P15248
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GeneID
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3578
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Source
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Escherichia coli.
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Molecular Weight
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重组人白细胞介素-9蛋白Approximately 14.1 kDa, a single non-glycosylated polypeptide chain containing 126 amino acids.
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Quantity
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2µg/10µg/1000µg
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AA Sequence
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QGCPTLAGIL DINFLINKMQ EDPASKCHCS ANVTSCLCLG IPSDNCTRPC FSERLSQMTN TTMQTRYPLI FSRVKKSVEV LKNNKCPYFS CEQPCNQTTA GNALTFLKSL LEIFQKEKMR GMRGKI
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Purity
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> 95 % by SDS-PAGE and HPLC analyses.
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Biological Activity
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重组人白细胞介素-9蛋白Fully biologically active when compared to standard. The ED50 as determined by a cell proliferation assay using human MO7e cells is less than 0.2 ng/ml, corresponding to a specific activity of > 5.0 × 106 IU/mg.
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Physical Appearance
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Sterile Filtered White lyophilized (freeze-dried) powder.
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Formulation
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Lyophilized from a 0.2 µm filtered concentrated solution in PBS, pH 7.4.
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Endotoxin
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重组人白细胞介素-9蛋白Less than 1 EU/µg of rHuIL-9 as determined by LAL method.
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Reconstitution
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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.
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Storage
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This lyophilized preparation is stable at 2-8 °C, but should be kept at -20 °C for long term storage, preferably desiccated. Upon reconstitution, the preparation is stable for up to one week at 2-8 °C. For maximal stability, apportion the reconstituted preparation into working aliquots and store at -20 °C to -70 °C. Avoid repeated freeze/thaw cycles.
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重组人白细胞介素-9蛋白
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SDS-PAGE
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Reference
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1. Renauld JC, Goethals A, Houssiau F, et al. 1990. J Immunol. 144:4235-41.
2. Kelleher K, Bean K, Clark SC, et al. 1991. Blood. 77:1436-41.
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Background
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Interleukin-9 (IL-9) is encoded by the IL9 gene and produced by T-cells and specifically by CD4+ helper cells. IL-9 was originally identified as a cytokine found in the conditioned medium of a human T cell leukemia virus type I (HTLVI) transformed T cell line. It functions through the IL-9 receptor, which activates different signal transducer and activator (STAT) proteins and thus connects this cytokine to various biological processes. IL-9 can support the growth of IL-2 independent and IL-4 independent helper T-cells. Human IL-9 has approximately 56 % amino acid sequence identity with murine IL-9. The gene encoding this cytokine has been identified as a candidate gene for asthma. Genetic studies on a mouse model of asthma demonstrated that this cytokine is a determining factor in the pathogenesis of bronchial hyper-responsiveness.
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