Name : Human PD-1/PDCD1 Protein
Product Source :
Recombinant Human PD-1/PDCD1 Protein is expressed from HEK293 with mFc (IgG1) tag at the C-Terminus. It contains Leu25-Gln167.[Accession | Q15116-1]
Molecular Weight :
The protein has a predicted MW of 41.6 kDa. Due to glycosylation, the protein migrates to 64-68 kDa based on Tris-Bis PAGE result.
Endotoxin Level :
Less than 1EU per μg by the LAL method.
Purity :
> 95% as determined by Tris-Bis PAGE> 95% as determined by HPLC
Formulation :
Lyophilized from 0.22μm filtered solution in PBS (pH 7.4). Normally 8% trehalose is added as protectant before lyophilization.
Reconstitution :
Centrifuge the tube before opening. Reconstituting to a concentration more than 100 μg/ml is recommended. Dissolve the lyophilized protein in distilled water.
Storage and Stability :
-20 to -80°C for 12 months as supplied from date of receipt. -80°C for 3-6 months after reconstitution. 2-8°C for 2-7 days after reconstitution. Recommend to aliquot the protein into smaller quantities for optimal storage. Please minimize freeze-thaw cycles.
Product Concentration :
Tris-Bis PAGE Human PD-1 on Tris-Bis PAGE under reduced condition.The purity is greater than 95%. SEC-HPLC The purity of Human PD-1 is greater than 95% as determined by SEC-HPLC. ELISA Data Immobilized Human PD-1, mFc Tag at 1μg/ml (100μl/well) on the plate. Dose response curve for Human PD-L1, hFc Tag with the EC50 of 0.17μg/ml determined by ELISA (QC Test). ELISA Data Immobilized Human PD-1, mFc Tag at 0.5μg/ml (100μl/Well). Dose response curve for Biotinylated Anti-PD-1 Ab., hFc Tag with the EC50 of 68ng/ml determined by ELISA.
Background :
Programmed Death-1 receptor (PD-1), also known as CD279, is type I transmembrane protein belonging to the CD28 family of immune regulatory receptors.PD1 is a inhibitory receptor on antigen activated T-cells that plays a critical role in induction and maintenance of immune tolerance to self. Delivers inhibitory signals upon binding to ligands CD274/PDCD1L1 and CD273/PDCD1LG2 (PubMed:21276005). Following T-cell receptor (TCR) engagement, PDCD1 associates with CD3-TCR in the immunological synapse and directly inhibits T-cell activation.
Synonyms :
PDCD1; PD1; CD279; SLEB2; PD-1
References & Citations :
(1)Blank C , Mackensen A. Contribution of the PD-L1/PD-1 pathway to T-cell exhaustion: an update on implications for chronic infections and tumor evasion[J]. Cancer Immunology Immunotherapy, 2007, 56(5):739-745.
Related category websites: https://www.medchemexpress.com/recombinant-proteins.html
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