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*-5/IL 5 Human 產(chǎn)品編號(hào)：CYT-212

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*-5/IL 5 Human 產(chǎn)品編號(hào)：CYT-212
產(chǎn)品規(guī)格：2μg/10μg/1mg

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*-5/IL 5 Human

產(chǎn)品編號(hào)：CYT-212
產(chǎn)品規(guī)格：2μg/10μg/1mg

Catalogue Number	CYT-212
Synonyms	EDF, BCDFII, TRF, T-cell replacing factor, Eosinophil differentiation factor, B cell differentiation factor I, IL-5.
Introduction	The protein encoded by this gene is a cytokine that acts as a growth and differentiation factor for both B cells and eosinophils. This cytokine is a main regulator of eosinopoiesis, eosinophil maturation and activation. The elevated production of this cytokine is reported to be related to asthma or hypereosinophilic syndromes. The receptor of this cytokine is a heterodimer, whose beta subunit is shared with the receptors for interleukine 3 （IL3） and colony stimulating factor 2 （CSF2/GM-CSF）. This gene, together with those for interleukin 4 （IL4）, interleukin 13 （IL13）, and CSF2, form a cytokine gene cluster on chromosome 5. This cytokine, IL4, and IL13 are found to be regulated coordinay by long-range regulatory elements spread over 120 kilobases on chromosome 5q31.
Description	Interleukin-5 Human Recombinant produced in E.Coli is a dimeric, non-glycosylated polypeptide chain containing 132 amino acids and having a molecular mass of 26522.84 Dalton. The IL-5 is purified by proprietary chromatographic techniques.
Source	Escherichia Coli.
Physical Appearance	Sterile Filtered White lyophilized （freeze-dried） powder.
Formulation	Lyophilized from a concentrated （1mg/ml） solution in water containing no additives.
Solubility	It is recommended to reconstitute the lyophilized Interleikin-5 in sterile 18MΩ-cm H2O not less than 100μg/ml, which can then be further diluted to other aqueous solutions.
Stability	Lyophilized Interleukin-5 although stable at room temperature for 3 weeks, should be stored desiccated below -18°C. Upon reconstitution IL5 should be stored at 4°C between 2-7 days and for future use below -18°C. Please avoid freeze thaw cycles.
Purity	Greater than 98.0% as determined by: （a） Analysis by RP-HPLC. （b） Analysis by SDS-PAGE.
Amino acid sequence	The sequence of the first five N-terminal amino acids was determined and was found to be Met-Ile-Pro-Thr-Glu.
Biological Activity	The ED50 as determined by the dose-dependant stimulation of the proliferation of TF-1 cells was found to be < 0.15ng/ml, corresponding to a Specific Activity of 6 x 10⁶ IU/mg.
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.