内毒素:Less than 1.0 EU per μg by the LAL method.
纯度:>95% as determined by SDS-PAGE.
活性:Measured by its binding ability in a functional ELISA. Immobilized Human ICOS (C136S, C137S), His Tag (Cat. No. ICS-H52H6) at 5 μg/mL (100 μL/well) can bind Human B7-H2, Fc Tag (Cat. No. B72-H5254) with a linear range of 0.3-5 ng/mL (QC tested).
产品背景:ICOS ligand (ICOSLG) is also known as B7 homolog 2 (B7-H2), B7-related protein 1 (B7RP-1) and CD antigen CD275, which belongs to the immunoglobulin superfamily and BTN/MOG family. ICOSLG contains one Ig-like C2-type (immunoglobulin-like) domain and one Ig-like V-type (immunoglobulin-like) domain. Isoform 1 is widely expressed, while isoform 2 is detected only in lymph nodes, leukocytes and spleen. B7-H2 is ligand for the T-cell-specific cell surface receptor ICOS. B7-H2 acts as a costimulatory signal for T-cell proliferation and cytokine secretion and induces also B-cell proliferation and differentiation into plasma cells. B7-H2 could play an important role in mediating local tissue responses to inflammatory conditions, as well as in modulating the secondary immune response by co-stimulating memory T-cell function.
产品描述:This protein carries a human IgG1 Fc tag at the C-terminus. The protein has a calculated MW of 53.1 kDa. The protein migrates as 66-90 kDa under reducing (R) condition (SDS-PAGE) due to glycosylation.
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