The Recombinant Human B7-H1/PD-L1/CD274 Protein is a biologically active recombinant protein that plays a significant role in various cellular processes and signaling pathways in human biology. This protein is widely employed in immunological research, cell biology studies, protein-protein interaction analyses, and therapeutic development, providing researchers with a reliable tool for investigating B7-H1/PD-L1/CD274 function and its implications in health and disease.
This product (SKU: RPCB0209) is produced using HEK293 cells and features a C-His tag for convenient detection and purification. The protein exhibits a calculated molecular weight of 26.14 kDa with an observed molecular weight of 31-41 kDa under denaturing conditions, achieving ≥ 95 % as determined by SDS-PAGE;≥95 % as determined by HPLC.. Functional bioactivity has been validated through rigorous quality control assays, confirming its suitability for demanding research applications.
High quality, high purity and low endotoxin recombinant Recombinant Human B7-H1/PD-L1/CD274 Protein (RPCB0209), tested reactivity in HEK293 cells and has been validated in SDS-PAGE.100% guaranteed.
Endotoxin:
< 0.1 EU/μg of the protein by LAL method.
Purity:
≥ 95 % as determined by SDS-PAGE;≥95 % as determined by HPLC.
Formulation:
Lyophilized from a 0.22 μm filtered solution of PBS, pH 7.4.Contact us for customized product form or formulation.
Bio-Activity:
Measured by its binding ability in a functional ELISA. Immobilized Recombinant Human PD-L1 at 10 μg/mL (100 μL/well) can bind Recombinant Human PD-1 with a linear range of 0.25-1.02 μg/mL.
Measured by its binding ability in a functional ELISA.Immobilized PE anti-human CD274 (B7-H1, PD-L1) Antibody at 1μg/mL (25 μL/well) can bind Human CD274 with a linear range of 0.46-18ng/mL.
Reconstitution:
Centrifuge the vial before opening. Reconstitute to a concentration of 0.1-0.5 mg/mL in sterile distilled water. Avoid vortex or vigorously pipetting the protein. For long term storage, it is recommended to add a carrier protein or stablizer (e.g. 0.1% BSA, 5% HSA, 10% FBS or 5% Trehalose), and aliquot the reconstituted protein solution to minimize free-thaw cycles.
Storage:
Store at -20℃.Store the lyophilized protein at -20℃ to -80 ℃ up to 1 year from the date of receipt. After reconstitution, the protein solution is stable at -20℃ for 3 months, at 2-8℃ for up to 1 week.
This protein is an immune inhibitory receptor ligand that is expressed by hematopoietic and non-hematopoietic cells, such as T cells and B cells and various types of tumor cells. The protein is a type I transmembrane protein that has immunoglobulin V-like and C-like domains. Interaction of this ligand with its receptor inhibits T-cell activation and cytokine production. During infection or inflammation of normal tissue, this interaction is important for preventing autoimmunity by maintaining homeostasis of the immune response. In tumor microenvironments, this interaction provides an immune escape for tumor cells through cytotoxic T-cell inactivation.
Recombinant Human B7-H1/PD-L1/CD274 Protein was determined by SDS-PAGE under reducing conditions with Coomassie Blue.
The purity of Human PD-L1/B7-H1 Protein (RPCB0209) was greater than 95% as determined by SEC-HPLC.
Immobilized Recombinant Human PD-L1 His Tag (RPCB0209) at 5ug/mL (100uL/well) can bind Recombinant Human PD-1 with a linear range of 0.16-1.09 μg/mL.
