Human IL-4 Protein_天津卡梅德科技发展有限公司

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Human IL-4 Protein

Human IL-4 Protein

产品编号

KMP2935

别名

白细胞介素 4, Human IL-4 Protein, IL-4

规格

50ug
100ug
200ug

DATASHEET MSDS

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产品介绍

Alias	白细胞介素 4, Human IL-4 Protein, IL-4
Catalog Number	KMP2935
Product Description	The Human IL-4 Protein(KMP2935) is produced in E. coli. The target gene encoding the IL4 (P05112-1) (His25-Ser153) is expressed with a N-terminal Met. The purified protein is biotinylated in vitro.
Molecular Name	IL-4
Species	Human
Host	E. coli
Size	50ug, 100ug, 200ug
Purity	>90% as determined by SDS-PAGE
Purification	Affinity purification
Endotoxin	<1.0 EU/ug determined by the LAL method
Formulation	PBS
Background	Interleukin-4, also known as IL4, is a secreted protein that belongs to the IL-4 / IL-13 family. Interleukin-4 / IL4 has many biological roles, including the stimulation of activated B-cell and T-cell proliferation. It enhances both secretion and cell surface expression of IgE and IgG1. Interleukin-4 / IL4 also regulates the expression of the low-affinity Fc receptor for IgE (CD23) on both lymphocytes and monocytes. Interleukin-4 is essential for the switching of B cells to IgE antibody production and the maturation of T helper (Th) cells toward the Th2 phenotype. It participates in at least several B-cell activation processes as well as other cell types. However, studies show that double mutant (Q116D, Y119D) of the murine IL4 protein (QY), both glutamine 116 and tyrosine 119, which binds to the IL4 receptor alpha, completely inhibits in a dose-dependent manner the IL4-induced proliferation of lipopolysaccharide-stimulated murine splenic B-cells, of the murine T cell line CTLL-2, and the murine pre-B-cell line BA/F3. QY also inhibited the IL4-stimulated up-regulation of CD23 expression by lipopolysaccharide-stimulated murine splenic B-cells and abolished tyrosine phosphorylation of the transcription factor Stat6 and the tyrosine kinase Jak3 in IL4-stimulated BA/F3 cells.
Storage Condition	Aliquot and store at -20℃ to -80℃. Avoid repeated freezing and thawing cycles.
Shipping Condition	In general, recombinant proteins are provided as lyophilized powder which are shipped at ambient temperature. If supplied as liquid, the proteins will be shipped with dry ice.
Molecular Weight	15.1 kDa

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