PD-L1 is involved in the costimulatory signal essential for T-cell proliferation and production of IL-10 and IFNgamma. Interaction with PD-1 inhibits T-cell proliferation and cytokine production, and down-regulates the immune response. PD
Immunogen Region
19-239
Tag
C-terminal Fc fusion (Human IgG1)
Description
Human secreted Programmed Cell Death 1 Ligand 1 (PD-L1)-Fc fusion protein, also known as CD274 and B7 homolog 1 (B7- H1), GenBank Accession No. NM_014143, amino acids 19-239, fused at the C-terminus to the Fc portion of human IgG1, expressed in a HEK293 cell expression system. MW = 52 kDa.
Formulation
8 mM phosphate, pH 7.4, 110 mM NaCl, 2.2 mM KCl, and 20% glycerol
Species
Human
Application
Useful for the study of protein-protein interaction and in vitro and in vivo protein function.
Notes
PD-L1 binding to PD-1 was tested following protocol for BPS Cat. #72005. Briefly, wells were coated with 10 ng of PD-L1 in PD-1 assay buffer. Varying concentrations of biotinylated PD-1 was added and wells were incubated at room temp. for 2 hours before adding strep-HRP, followed by chemiluminescent substrate. Luminescence was read on a chemiluminescent plate reader.
This protein runs at a higher M.W. by SDS-PAGE due to glycosylation. The aggregation state of this product has been confirmed to be<10%. Avoid freeze/thaw cycles. Protein may be diluted to>=100 ug/ml in PBS + glycerol and stored at -80°C.