ICOS ligand Protein, Mouse, Recombinant (His Tag)

Inducible co-stimulator ligand (ICOSL), also known as B7-H2, is a member of the B7 family of co-stimulatory molecules related to B7-1 and B7-2. It is a transmembrane glycoprotein with extracellular IgV and IgC domains and binds to ICOS on activated T cells, thus delivers a positive costimulatory signal for optimal T cell function. The structural features of ICOSL are crucial for its costimulatory function. The present study shows that ICOSL displays a marked oligomerization potential, resembling more like B7-1 than B7-2. B7-H2-dependent signaling may play an active role in a proliferative response rather than in cytokine and chemokine production. The CD28/B7 and ICOS/B7-H2 pathways are both critical for costimulating T cell immune responses. Deficiency in either pathway results in defective T cell activation, cytokine production, and germinal center formation.

B7-H2 Protein, Mouse; B7h Protein, Mouse; B7RP-1 Protein, Mouse; GI50 Protein, Mouse; GL50 Protein, Mouse; GL50-B Protein, Mouse; ICOS-L Protein, Mouse; Icoslg Protein, Mouse; LICOS Protein, Mouse

Measured by its binding ability in a functional ELISA. Immobilized mouse B7-H2 at 1 μg/ml (100 μl/well) can bind human ICOS with a linear range of 40-1000 ng/ml.

Lyophilized from sterile PBS, pH 7.4. 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 mouse B7-H2 comprises 244 amino acids with a predicted molecular mass of 27.8 kDa. As a result of glycosylation, the apparent molecular mass of rmB7-H2 is approximately 45-55 kDa 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.