Product Description |
Recombinant Human IL-31 Protein is expressed from HEK293 with His tag at the N-Terminus.It contains Ser24-Thr164. |
Product 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. |
Product Category |
Recombinant Protein |
Target |
IL-31 |
Synonyms |
Interleukin-31； IL-31；IL31 |
Accession |
|
Species |
Human |
Biotinylated |
no |
Amino Acid Range |
Ser24-Thr164 |
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. |
Activity |
Immobilized Human IL-31, His Tag at 5ug/ml (100ul/Well) on the plate. Dose response curve for Human IL-31 RA, hFc Tag with the EC50 of 1.53ug/ml determined by ELISA (QC Test). The affinity constant of 1.97 nM as determined in SPR assay (Biacore T200). See testing image for detail. |
Product Tag |
N-His |
Express System |
HEK293 |
Purity |
> 95% as determined by Bis-Tris PAGE;> 95% as determined by HPLC |
Endotoxin |
Less than 1EU per ug by the LAL method. |
Form |
Lyophilized |
Shipping |
Shipped at ambient temperature. |
Formulation |
Lyophilized from 0.22um filtered solution in PBS (pH 7.4). Normally 8% trehalose is added as protectant before lyophilization. |
Reconstitution |
Centrifuge the tube before opening. Reconstituting to a concentration more than 100 ug/ml is recommended. Dissolve the lyophilized protein in distilled water. |
Stability And Storage |
Reconstituted protein stable at -80°C for 12 months, 4°C for 1 week. Use a manual defrost freezer and avoid repeated freeze-thaw cycles. |
|
|
Human IL-31 RA, hFc Tag captured on CM5 Chip via Protein A can bind Human IL-31, His Tag with an affinity constant of 1.97 nM as determined in SPR assay (Biacore T200). |
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|
Immobilized Human IL-31, His Tag at 5ug/ml (100ul/Well) on the plate. Dose response curve for Human IL-31 RA, hFc Tag with the EC50 of 1.53ug/ml determined by ELISA (QC Test). |
|
|
Human IL-31 on Bis-Tris PAGE under reduced condition. The purity is greater than 95%. |
|
|
The purity of Human IL-31 is greater than 95% as determined by SEC-HPLC. |
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