Human CD274 Protein, Flag Tag_天津卡梅德科技发展有限公司

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Human CD274 Protein, Flag Tag

Human CD274 Protein, Flag Tag

产品编号

KMP2355

别名

程序性死亡蛋白配体-1, programmed cell death 1 ligand 1, CD274

规格

50ug
100ug
200ug

DATASHEET MSDS

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产品介绍

Alias	程序性死亡蛋白配体-1, programmed cell death 1 ligand 1, CD274
Catalog Number	KMP2355
Product Description	The Human CD274 Protein(KMP2355) is produced in HEK293 Cells and the target gene encoding Phe19-Thr239 is expressed with a Flag tag at the C-terminus.
Molecular Name	CD274
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	20mM PB, 150mM NaCl, pH7.4
Background	CD274, also known as B7-H1 or programmed death ligand 1(PD-L1), is a 40 kD type I transmembrane protein and a member of the B7 family within the immunoglobulin receptor superfamily. Programmed death-1 ligand-1(PD-L1, CD274, B7-H1) has been identified as the ligand for the immunoinhibitory receptor programmed death-1(PD1/PDCD1) and has been demonstrated to play a role in the regulation of immune responses and peripheral tolerance. By binding to PD1 on activated T-cells and B-cells, PD-L1 may inhibit ongoing T-cell responses by inducing apoptosis and arresting cell-cycle progression. Accordingly, it leads to growth of immunogenic tumor growth by increasing apoptosis of antigen specific T cells and may contribute to immune evasion by cancers. PD-L1 thus is regarded as promising therapeutic target for human autoimmune disease and malignant cancers.
SDS-PAGE
Predicted Molecular Weight	26.29 kDa
Storage Condition	Aliquot and store at -20℃ to -80℃. Avoid repeated freezing and thawing cycles.
Shipping Condition	In general, the proteins are provided as lyophilized powder which are shipped at ambient temperature. They are shipped out in dry ice if supplied in liquid form.
Uniprot ID	Q15116
References	1.Ann. N. Y. Acad. Sci. 1217:45-59 (2011) 2.Gene 638:20-25 (2018)
Function	Inhibitory receptor on antigen activated T-cells that plays a critical role in induction and maintenance of immune tolerance to self. Delivers inhibitory signals upon binding to ligands CD274/PDCD1L1 and CD273/PDCD1LG2 . Following T-cell receptor (TCR) engagement, PDCD1 associates with CD3-TCR in the immunological synapse and directly inhibits T-cell activation. Suppresses T-cell activation through the recruitment of PTPN11/SHP-2: following ligand-binding, PDCD1 is phosphorylated within the ITSM motif, leading to the recruitment of the protein tyrosine phosphatase PTPN11/SHP-2 that mediates dephosphorylation of key TCR proximal signaling molecules, such as ZAP70, PRKCQ/PKCtheta and CD247/CD3zeta. The PDCD1-mediated inhibitory pathway is exploited by tumors to attenuate anti-tumor immunity and escape destruction by the immune system, thereby facilitating tumor survival . The interaction with CD274/PDCD1L1 inhibits cytotoxic T lymphocytes (CTLs) effector function . The blockage of the PDCD1-mediated pathway results in the reversal of the exhausted T-cell phenotype and the normalization of the anti-tumor response, providing a rationale for cancer immunotherapy .

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