重组大鼠白细胞介素-33蛋白 rRtIL-33 上海康朗生物科技有限公司

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产品名称：重组大鼠白细胞介素-33蛋白
产品型号：rRtIL-33
产品展商：KALANG
产品文档：无相关文档
发布时间：2018-07-16
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简单介绍

重组大鼠白细胞介素-33蛋白与其它公司提供的重组蛋白不同，rRtIL-33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.重组大鼠白细胞介素-33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

重组大鼠白细胞介素-33蛋白

Synonyms	IL-33
Species	Rat
Accession	Q66H70
GeneID	361749
Source	Escherichia coli.
Molecular Weight	重组大鼠白细胞介素-33蛋白Approximately 17.4 kDa, a single non-glycosylated polypeptide chain containing 156 amino acids.
Quantity	2µg/10µg/1000µg
AA Sequence	SIQGTSLLTE SCALSTYNDQ SVSFVLENGC YVINVEDCGK NQEKDKVLLR YYESSFPAQS GDGVDGKKLM VNMSPIKDTD IWLNANDKDY SVELQKGDVS PPDQAFFVLH KKSSDFVSFE CKNLPGTYIG VKDNQLALVE ENDESCNNIM FKLSKM
Purity	> 95 % by SDS-PAGE and HPLC analyses.
Biological Activity	重组大鼠白细胞介素-33蛋白Fully biologically active when compared to standard. The ED₅₀ as determined by a cell proliferation assay using murine D10S cells is less than 0.5 ng/ml, corresponding to a specific activity of > 2.0 × 10⁶ IU/mg.
Physical Appearance	Sterile Filtered White lyophilized (freeze-dried) powder.
Formulation	Lyophilized from a 0.2 µm filtered concentrated solution in 20 mM Tris, 300 mM NaCl, pH 8.5.
Endotoxin	Less than 1 EU/µg of rRtIL-33 as determined by LAL method.
Reconstitution	重组大鼠白细胞介素-33蛋白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.
Storage	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.
重组大鼠白细胞介素-33蛋白
Reference	1. Lingel A, Weiss TM, Niebuhr M, et al. 2009. Structure. 17:1398-410. 2. Baekkevold ES, Roussigne M, Yamanaka T, et al. 2003. Am J Pathol. 163:69-79. 3. Onda H, Kasuya H, Takakura K, et al. 1999. J Cereb Blood Flow Metab. 19:1279-88. 4. Black RA, Kronheim SR, Merriam JE, et al. 1989. J Biol Chem. 264:5323-6.
Background	Interleukin-33 (IL-33), also known as NF-HEV and DVS 27, is a cytokine belonging to the IL-1 superfamily. It is also a proinflammatory protein that may regulate gene transcription and it induces helper T cells, mast cells, eosinophils and basophils to produce type 2 cytokines. The induction of type 2 cytokines by IL-33 in vivo is believed to induce the severe pathological changes observed in mucosal organs following administration of IL-33. IL-33 is constitutively expressed in smooth muscle and airway epithelia and it binds to a high-affinity receptor family member ST2. In vivo administration of mature IL-33 promotes increased production of IL-5, IL-13, IgE, and IgA, as well as splenomegaly and inflammatory infiltration of mucosal tissues. Recombinant rat IL-3 contains 156 amino acid residues and it shares 59 % a.a. and 90 % sequence identity with human and murine IL-33.