IL 19 Mouse/重組小鼠白介素19

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IL 19 Mouse/重組小鼠白介素19 產品編號：CYT-411
產品規格：2μg/10μg/1mg

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IL 19 Mouse/重組小鼠白介素19

產品編號：CYT-411
產品規格：2μg/10μg/1mg

Synonyms	Melanoma differentiation association like protein, MDA1, NG.1, ZMDA1, IL-10C, IL-19.
Introduction	IL19 is a cytokine that belongs to the IL10 cytokine subfamily. IL-19 is found to be preferentially expressed in monocytes. It can bind the IL20 receptor complex and lead to the activation of the signal transducer and activator of transcription 3 （STAT3）. A similar cytokine in mouse is reported to up-regulate the expression of IL6 and TNF-alpha and induce apoptosis, which suggests a role of this cytokine in inflammatory responses. alternatively spliced transcript variants encoding the distinct isoforms have been described.
Description	Interleukin-19 Mouse Recombinant produced in E.Coli is a single, non-glycosylated polypeptide chain containing 152 amino acids and having a molecular mass of 17722 Dalton. The IL-19 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 Interleukin-19 in sterile 18MΩ-cm H2O not less than 100μg/ml, which can then be further diluted to other aqueous solutions.
Stability	Lyophilized Interleukin-19 although stable at room temperature for 3 weeks, should be stored desiccated below -18°C. Upon reconstitution IL19 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 prevent freeze-thaw cycles.
Purity	Greater than 95.0% 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- Leu-Arg-Arg-Cys.
Biological Activity	The biological activity was determined by measuring the dose-dependent activation of STAT3 in human epidermal keratinocytes （HEK2a cells）. Significant STAT3 activation is observed with >100ng/mL of IL-19 recombinant mouse.
Protein content	Protein quantitation was carried out by two independent methods1. UV spectroscopy at 280 nm using the absorbency value of 0.47 as the extinction coefficient for a 0.1% （1mg/ml） solution. This value is calculated by the PC GENE computer analysis program of protein sequences （InliGenetics）. 2. Analysis by RP-HPLC, using a standard solution of IL-19 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.