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CYT-273

重组小鼠白介素-1β（rmIL-1β）

2μg/10μg/1mg

Prospec

Background:
	A soluble factor produced by monocytes, macrophages, and other cells which activates T-lymphocytes and potentiates their response to mitogens or antigens. Murine macrophages display a transition from IL-1 beta to IL-1 alpha production during maturation of monocytes into inflammatory macrophages The synthesis of IL-1 can be induced by other cytokines including TNF-alpha , IFN-alpha , IFN-beta and IFN-g and also by bacterial endotoxins , viruses, mitogens, and antigens. In human skin fibroblasts IL-1 alpha and TNF-alpha induce the synthesis of IL-1beta . In pheochromocytoma cells, NGF induces the synthesis of IL-1.
	Description :
	Recombinant Murine IL-1 produced in E.Coli is a non-glycosylated, Polypeptide chain containing 153 amino acids and having a molecular mass of 17500 Dalton. Murine IL-1 beta is purified by proprietary chromatographic techniques.
	Physical Appearance:
	Sterile Filtered White lyophilized （freeze-dried） powder.
	Formulation:
	Murine IL-1b was lyophilized from a concentrated （1mg/ml） sterile solution containing 5mM Tris pH=8. monobasic & 0.32mg sodium phosphate dibasic）.
	Solubility:
	It is recommended to reconstitute the lyophilized Murine IL-1b in sterile 18MΩ-cm H2O not less than 100µg/ml, which can then be further diluted to other aqueous solutions.
	Stability:
	Lyophilized Murine IL-1 beta although stable at room temperature for 3 weeks, should be stored desiccated below -18 C. Upon reconstitution Murine IL-1b should be stored at 4 C between 2-7 days and for future use below -18 C. For long term storage it is recommended to add a carrier protein （0.1% HSA or BSA）. Please avoid freeze-thaw cycles.
	Purity:
	Greater than 98.0% as determined by: （a） Analysis by RP-HPLC. （b） Anion-exchange FPLC. （c） Analysis by reducing and non-reducing SDS-PAGE Silver Stained gel.
	Amino acid sequence:
	The sequence of the first five N-terminal amino acids was determined and was found to be Met-Val-Pro-Ile-Arg.
	Dimers and aggregates:
	Less than 1% as determined by silver-stained SDS-PAGE gel analysis.
	Biological Activity:
	ProSpec's Murine Interleukin-1 beta is fully biologically active when compared to standard. The ED50 as determined by the dose-dependant stimulation of murine D10S cells is less then 0.002 ng/ml, corresponding to a Specific Activity of 5 x10⁹ IU/mg.
	Endotoxin:
	Less than 0.1 ng/µg （IEU/µg） of Murine IL-1 beta.
	Protein content:
	Protein quantitation was carried out by two independent methods: 1. UV spectroscopy at 280 nm 2. Analysis by RP-HPLC, using a standard solution of Murine IL-1 beta as a Reference Standard.
	Usage:
	Prospec's products are furnished for LABORATORY RESEARCH USE ONLY. The product may not be used as drugs, agricultural or pesticidal products, food additives or household chemicals.

佰易聚生物商城提供美国光谱医学透析袋，wako生化试剂，amresco生化试剂，sigma生化试剂，优质的分子生物学试剂和试剂盒、培养基本和培养耗材、细胞因子和细胞分离液、抗体和elisa试剂盒及常用生物试剂等,大量现货火爆*,欢迎登录 www.ebioeasy.com或者,，洽谈选购！

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