Human CD66b Protein, His Tag, Avi Tag_天津卡梅德科技发展有限公司

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Human CD66b Protein, His Tag, Avi Tag

Human CD66b Protein, His Tag, Avi Tag

产品编号

KMP2924

别名

CEA 细胞粘附分子 8, Human CD66b Protein, His Tag, Avi Tag, CD66b

规格

50ug
100ug
200ug

DATASHEET MSDS

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产品介绍

Alias	CEA 细胞粘附分子 8, Human CD66b Protein, His Tag, Avi Tag, CD66b
Catalog Number	KMP2924
Product Description	The Human CD66b Protein(KMP2924) is produced in HEK293 Cells. The target gene encoding the human CEACAM8 (NP_001807.2) (Met1-Ser319) is expressed with a c-terminal polyhistidine tagged Avi tag at the C-terminus. The expressed protein is biotinylated in vivo by the Biotin-Protein ligase (BirA enzyme) which is co-expressed.
Molecular Name	CD66b
Species	Human
Host	HEK293 Cells
Size	50ug, 100ug, 200ug
Purity	>95% as determined by SDS-PAGE
Purification	Affinity purification
Endotoxin	<1.0 EU/ug determined by the LAL method
Formulation	PBS, pH7.4
Background	CEACAM8, also known as CD66b or NCA-95, is a single chain, GPI-anchored, highly glycosylated protein belonging to the carcinoembryonic antigen family. There are four members in this family: CD66a, CD66b, CD66c, and CD66d. Members of CEACAM family are widely expressed especially on human neutrophils, and, depending on the tissue, capable of regulating diverse functions including tumor promotion, tumor suppression, angiogenesis, and neutrophil activation. Abnormal overexpression and downregulation of some CEACAMs have been described in tumor cells. Monoclonal antibodies grouped in the CD66 cluster recognize CEACAM members. Ectopic CD66 expression is commonly detected in B-cell lineage acute lymphoblastic leukemia (ALL). CEACAM8(CD66b) is also an activation marker for human granulocytes. However, its biological functions are largely unknown in eosinophils. It has been reported that CD66b is highly expressed on the surface of human peripheral blood eosinophils isolated from healthy individuals. Engagement of CD66b by mAb or a natural ligand, galectin-3, activated a Src kinase family molecule, hemopoietic cell kinase (Hck), and induced cellular adhesion, superoxide production, and degranulation of eosinophils. CD66b molecules were localized in lipid rafts, and disruption of lipid rafts or removal of the GPI anchor inhibited the adhesion and activation of eosinophils. Importantly, CD66b was constitutively and physically associated with a beta2 integrin, CD11b, and cross-linking of CD66b induced a striking clustering of CD11b molecules. Thus, CD66b molecules are involved in regulating adhesion and activation of eosinophils, possibly through their localization in lipid rafts and interaction with other cell surface molecules, such as CD11b. Binding of exogenous or endogenous carbohydrate ligands(s) to CD66b may be important in the release of proinflammatory mediators by human eosinophils.
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	34.7 kDa

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