CD274 / PD-L1 (programmed death ligand-1), also known as B7-H1, is a member of the B7 family of regulatory proteins. It can act as both costimulatory and coinhibitory molecule for T cells. Interaction with its ligand CD279 (PD1) appears to be important in the maintenance of peripheral tolerance and in prevention of tumor rejection. Even pathogens (e.g. Schistosoma) may exploit CD274 to evade an immune response. Besides CD279, existence of other receptor(s) for CD274 is likely.
Purified by protein-A affinity chromatography
> 95% (by SDS-PAGE)
Store at 2-8°C. Do not freeze. Do not use after expiration date stamped on vial label.
Substrate / Buffer
Phosphate buffered saline (PBS) with 15 mM sodium azide, approx. pH 7.4
The mouse monoclonal antibody 29E.2A3 recognizes CD274 / PD-L1 (also known as B7-H1), a 40 kDa type I transmembrane protein expressed by dendritic cells, activated T cells, activated monocytes, and in various tissues, above all in heart and skeletal muscle, placenta and lung, and in many cancer cells, including T cell lymphomas, melanomas, and glioblastomas.
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