TSP-HM202 | 价格

TSP-HM202-100μg / 询价

TSP-HM202-500μg / 询价

TSP-HM202-500μgx2 / 询价

Human TSLP (R127A, R130A) Protein

产品信息(Product Info)
表达区间及表达系统(Source)

Recombinant Human TSLP (R127A, R130A) Protein is expressed from HEK293 with His tag at the C-terminus.
It contains Tyr29-Gln159 (R127A, R130A) [Accession | Q969D9-1].

分子量大小(Molecular Weight)

The protein has a predicted MW of 16.37 kDa. Due to glycosylation, the protein migrates to 28-38 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 0.1 EU per μg by the LAL method.

制剂(Formulation)

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

重构方法(Reconstitution)

Dissolve the lyophilized protein in distilled water. Please refer to the Certificate of Analysis for detailed instructions.

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 TSLP (R127A, R130A) on Bis-Tris PAGE under reduced condition. The purity is greater than 95%.
SEC-HPLC
The purity of Human TSLP (R127A, R130A) is greater than 95% as determined by SEC-HPLC.
ELISA Data
Immobilized Human TSLP (R127A, R130A), His Tag at 1μg/ml (100μl/well) on the plate. Dose response curve for Human TSLPR, hFc Tag with the EC50 of 5.2ng/ml determined by ELISA. (QC Test)
 
Immobilized Human TSLP (R127A, R130A), His Tag at 0.5μg/ml (100μl/well) on the plate. Dose response curve for Anti-TSLP Antibody, hFc Tag with the EC50 of 4.6ng/ml determined by ELISA.
BLI Data
Loaded Human TSLPR, hFc Tag on ProA-Biosensor can bind Human TSLP (R127A, R130A), His Tag with an affinity constant of 12.70 nM as determined in BLI assay.
 
Loaded Anti-TSLP Antibody, hFc Tag on ProA-Biosensor can bind Human TSLP (R127A, R130A), His Tag with an affinity constant of 0.41 nM as determined in BLI assay.
背景(Background)

Thymic Stromal Lymphopoietin (TSLP) was originally identified as an activity from the conditioned medium of a mouse thymic stromal cell line that promoted the development of B cells. Cytokine that induces the release of T-cell-attracting chemokines from monocytes and, in particular, enhances the maturation of CD11c dendritic cells. Can induce allergic inflammation by directly activating mast cells.

分子别名(Synonyms)

thymic stromal lymphopoietin; TSLP

文献(References)

(1)Corren J , Parnes J R , Wang L , et al. Tezepelumab in Adults with Uncontrolled Asthma[J]. New England Journal of Medicine, 2017, 377(10):936-946.

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