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Biotinylated Human TSLP Protein, His,Avitag™

分子别名(Synonym)

TSLP

表达区间及表达系统(Source)

Biotinylated Human TSLP, His,Avitag (TSP-H82Eb) is expressed from human 293 cells (HEK293). It contains AA Tyr 29 - Gln 159 (Accession # Q969D9-1).

Predicted N-terminus: Tyr 29

蛋白结构(Molecular Characterization)

Online(Tyr 29 - Gln 159) Q969D9-1

This protein carries a polyhistidine tag at the C-terminus, followed by an Avi tag.

The protein has a calculated MW of 18.6 kDa. As a result of glycosylation, the protein migrates as 11 kDa and 18-21 kDa under reducing (R) condition, and 22-28 kDa under non-reducing (NR) condition (SDS-PAGE).

标记(Biotinylation)

Biotinylation of this product is performed using Avitag™ technology. Briefly, the single lysine residue in the Avitag is enzymatically labeled with biotin.

蛋白标记度(Biotin:Protein Ratio)

The biotin to protein ratio is 0.5-1 as determined by the HABA assay.

内毒素(Endotoxin)

Less than 1.0 EU per μg by the LAL method.

纯度(Purity)

>85% as determined by SDS-PAGE.

制剂(Formulation)

Lyophilized from 0.22 μm filtered solution in PBS, pH7.4. Normally trehalose is added as protectant before lyophilization.

Contact us for customized product form or formulation.

重构方法(Reconstitution)

Please see Certificate of Analysis for specific instructions.

For best performance, we strongly recommend you to follow the reconstitution protocol provided in the CoA.

存储(Storage)

For long term storage, the product should be stored at lyophilized state at -20°C or lower.

Please avoid repeated freeze-thaw cycles.

This product is stable after storage at:

  1. -20°C to -70°C for 12 months in lyophilized state;
  2. -70°C for 3 months under sterile conditions after reconstitution.
 

电泳(SDS-PAGE)

Biotinylated Human TSLP, His,Avitag (Cat. No. TSP-H82Eb) SDS-PAGE gel

Biotinylated Human TSLP, His,Avitag on SDS-PAGE under reducing (R) and non-reducing (NR) conditions. The gel was stained overnight with Coomassie Blue. The purity of the protein is greater than 85%.

 

活性(Bioactivity)-ELISA

Biotinylated Human ELISA

Immobilized Human TSLP R, Fc Tag at 5 μg/mL (100 μL/well) can bind Biotinylated Human TSLP, His,Avitag (Cat. No. TSP-H82Eb) with a linear range of 4-31 ng/mL (QC tested).

Protocol

Biotinylated Human  ELISA

Immobilized Anti-TSLP MAb, Human IgG2 at 2 μg/mL (100 μL/well) can bind Biotinylated Human TSLP, His,Avitag (Cat. No. TSP-H82Eb) with a linear range of 0.1-2 ng/mL (Routinely tested).

Protocol

Biotinylated Human ELISA

Biotinylated Human TSLP (R127A, R130A), His,Avitag (Cat. No. TSP-H82E0) immobilized at 2 μg/mL (100 μL/well) via precoated 5 μg/mL (100 μL/well) of Human TSLP R, Fc Tag (Cat. No. TSR-H525a), can bind can bind Human IL-7 R alpha, Mouse IgG2a Fc Tag (Cat. No. IL7-H5258) with a linear range of 1-20 ng/mL (Routinely tested).

Protocol

活性(Bioactivity)-BLI

Biotinylated Human BLI

Loaded Biotinylated Human TSLP, His,Avitag (Cat. No. TSP-H82Eb) on SA Biosensor, can bind Monoclonal Anti-Human TSLP Antibody, Human IgG2 with an affinity constant of 15.2 pM as determined in BLI assay (ForteBio Octet Red96e) (Routinely tested).

Protocol

 

背景(Background)

Thymic stromal lymphopoietin (TSLP) is an epithelial cell-derived cytokine involved in the pathology of inflammatory skin diseases, and is widely expressed by epithelial cells. Human TSLP cDNA encodes a 159 amino acid (aa) residue precursor protein with a 28 aa signal sequence (4, 5). Human TSLP has been shown to developing nondeletional central tolerance, amplifying epithelium-induced class switching, inducing atopic diseases and maintaining intestinal noninflammatory environment. Among diverse cells responding to Human TSLP, CD11c+ dendritic cells are the most obviously characterized target cells.

 

前沿进展

 
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TSLP靶点信息
英文全称:Thymic stromal lymphopoietin
中文全称:胸腺基质淋巴细胞生成素
种类:Homo sapiens
上市药物数量:0详情
临床药物数量:1详情
最高研发阶段:临床三期
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