IL3-HM101 | 价格

IL3-HM101-100μg / 询价

IL3-HM101-500μg / 询价

IL3-HM101-500μgx2 / 询价

Human IL-31 Protein

产品信息(Product Info)
表达区间及表达系统(Source)

Recombinant Human IL-31 Protein is expressed from HEK293 with His tag at the N-Terminus.
It contains Ser24-Thr164 [Accession | Q6EBC2-1].

分子量大小(Molecular Weight)

The protein has a predicted MW of 16.9 kDa. Due to glycosylation, the protein migrates to 20-25 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 IL-31 on Bis-Tris PAGE under reduced condition. The purity is greater than 95%.

SEC-HPLC

The purity of Human IL-31 is greater than 95% as determined by SEC-HPLC.

ELISA Data

Immobilized Human IL-31, His Tag at 5μg/ml (100μl/Well) on the plate. Dose response curve for Human IL-31 RA, hFc Tag with the EC50 of 1.53μg/ml determined by ELISA (QC Test).

SPR Data

Human IL-31, His Tag immobilized on CM5 Chip can bind Human IL-31 RA, His Tag with an affinity constant of 125.61 nM as determined in SPR assay (Biacore T200).

背景(Background)

Many autoimmune skin diseases, such as bullous pemphigoid (BP), psoriasis and certain types of chronic urticaria, are associated with intensive pruritus. While histamine and neuropeptides have previously been ascribed to play a role in itch that accompanies these diseases, recent evidence suggests that the pruritogenic cytokine interleukin (IL)-31 is a major driver of pruritic responses. IL-31 was originally shown to be produced by activated helper T cells, particularly Th2 cells, mast cells, macrophages and dendritic cells.

分子别名(Synonyms)

Interleukin-31; IL-31;IL31

文献(References)

(1) Gibbs BF, Patsinakidis N, Raap U. Role of the Pruritic Cytokine IL-31 in Autoimmune Skin Diseases. Front Immunol. 2019 Jun 21;10:1383. doi: 10.3389/fimmu.2019.01383. PMID: 31281316; PMCID: PMC6598004.

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