BH7-HM272 | 价格

BH7-HM272-100μg / 询价

BH7-HM272-500μg / 询价

BH7-HM272-500μgx2 / 询价

Human B7-H2/ICOSLG Protein

产品信息(Product Info)
表达区间及表达系统(Source)

Recombinant Human B7-H2/ICOSLG Protein is expressed from HEK293 with hFc tag at the C-Terminus.
It contains Asp19-Ser258 [Accession | O75144-1].

分子量大小(Molecular Weight)

The protein has a predicted MW of 53.4 kDa. Due to glycosylation, the protein migrates to 75-100 kDa based on Bis-Tris PAGE result.

纯度(Purity)

> 95% as determined by Bis-Tris PAGE
> 95% as determined by HPLC

内毒素(Endotoxin)

Less than 1EU per μg by the LAL method.

制剂(Formulation)

Lyophilized from 0.22μm filtered solution in PBS (pH 7.4). Normally 8% trehalose is added as protectant before lyophilization.

重构方法(Reconstitution)

Centrifuge the tube before opening. Reconstituting to a concentration more than 100 μg/ml is recommended. Dissolve the lyophilized protein in distilled water.

存储(Storage)

-20 to -80°C for 12 months as supplied from date of receipt.
-80°C for 3 months after reconstitution.
Recommend to aliquot the protein into smaller quantities for optimal storage. Please minimize freeze-thaw cycles.

产品数据(Assay Data)
Bis-Tris PAGE

Human B7-H2 on Bis-Tris PAGE under reduced condition. The purity is greater than 95%.

SEC-HPLC

The purity of Human B7-H2 is greater than 95% as determined by SEC-HPLC.

ELISA Data

Immobilized Human ICOS, His Tag at 0.5μg/ml (100μl/Well) on the plate. Dose response curve for Human B7-H2, hFc Tag with the EC50 of 25.3ng/ml determined by ELISA (QC Test).

SPR Data

Human B7-H2 captured on Protein A chip, can bind Human ICOS (C136S,C137S) , His Tag with an affinity constant of 40.2nM as determined in a SPR assay (Biacore T200).

背景(Background)

B7-H2, also known as B7-related protein (B7RP1), ICOS Ligand, and CD275, is an approximately 60 kDa transmembrane glycoprotein in the B7 family of immune regulatory molecules. B7-H2 is a ligand for the T-cell-specific cell surface receptor ICOS. Acts as a costimulatory signal for T-cell proliferation and cytokine secretion; induces also B-cell proliferation and differentiation into plasma cells.

分子别名(Synonyms)

CD275; B7H2; B7-H2; B7RP-1; GL50; ICOSL; ICOS-L; ICOSLG; B7RP1; LICOS; ICOS ligand; B7-H2B7-related protein 1; B7RP-1; B7RP1B7-like protein Gl50

文献(References)

(1) Yao S , Zhu Y , Chen L. Advances in targeting cell surface signalling molecules for immune modulation[J]. Nature Reviews Drug Discovery, 2013, 12(2):130-146.

Note: HPLC results always come from liquid protein, due to absorption peak interference of trehalose in lyophilized powder.