IL-27 Protein, Human, Recombinant (His Tag)

IL-27 protein is a member of the IL-6 superfamily, which is expressed on monocytes, endothelial cells, and dendritic cells. IL-27 protein is also referred to as the IL-12 p35-related protein, p28, is one subunit of a heterodimeric cytokine complex, and associates with another subunit EBI3 (EBV-induced gene 3), and IL-12 p40-related protein (IL-27B) . IL-27 protein is an early product of activated antigen-presenting cells and drives the rapid clonal expansion of naive CD4 (+) T cells and plays a role in the early regulation of Th1 cells initiation which drives efficient adaptive immune response. IL-27 protein has an antiproliferative activity on melanomas through WSX-1/STAT1 signaling. Thus, IL-27 protein may be an attractive candidate as an antitumor agent applicable to cancer immunotherapy.

A DNA sequence encoding the IL27 complex composed of IL27B subunit (NP_005746.2) (Met 1-Lys 229) and the N-terminally truncated IL27p28 (IL27A) subunit (NP_663634.2) (Phe 29-Pro 243) linked by an polypeptide linker was fused with a polyhistidine tag at the C-terminus.

1. Measured by its binding ability in a functional ELISA. Immobilized human IL27-His at 10 μg/ml (100 μl/well) can bind human IL27RA-Fc (Cat:PH50852M4), The ECof human IL27RA-Fc (Cat:PH50852M4) is 0.2-0.46 μg/ml. 2. Measured in antiviral assays using HepG2 cells infected with vesicular stomatitisvirus (VSV) . The EDfor this effect is typically 23-92 ng/mL.

Lyophilized from sterile 20mM MOPS,150mM NaCl, 0.05% CHAPS, PH7.0 Please contact us for any concerns or special requirements. Normally 5 % - 8 % trehalose, mannitol and 0.01% Tween 80 are added as protectants before lyophilization. Please refer to the specific buffer information in the hard copy of CoA.

The recombinant human IL27 complex (IL27B & IL27A) consists of 450 amino acids after removal of the signal peptide and has a calculated molecular mass of 56 KDa as estimated in SDS-PAGE under reducing conditions.

In general, recombinant proteins are provided as lyophilized powder which are shipped at ambient temperature. Bulk packages of recombinant proteins are provided as frozen liquid. They are shipped out with blue ice unless customers require otherwise. Stable for 1 year at -20°C or below from date of shipment. For maximum recovery of product, centrifuge the original vial after thawing and opening the cap. For long-term storage, aliquot and store at -20°C or below. Avoid repeated freeze-thaw cycles.