Product Details
Product Details
Product Specification
Host | Mouse |
Antigen | CD279 (PD-1) |
Synonyms | Programmed cell death protein 1; Protein PD-1; hPD-1; PD1; PDCD1 |
Location | Cell membrane |
Accession | Q15116 |
Clone Number | S-R570 |
Antibody Type | Mouse mAb |
Isotype | IgG1,k |
Application | FCM |
Reactivity | Hu |
Purification | Protein G |
Conjugation | FITC |
Physical Appearance | Liquid |
Storage Buffer | PBS, 25% Glycerol, 1% BSA, 0.3% Proclin 300 |
Stability & Storage | 12 months from date of receipt / reconstitution, 2 to 8 °C as supplied |
Dilution
application | dilution | species |
FCM | 5 μl per million cells in 100μl volume |
Background
Programmed cell death protein 1 (PD-1), also known as CD279, is a type I transmembrane protein belonging to the CD28 immunoglobulin superfamily. It is encoded by the Pdcd1 gene and consists of 288 amino acids, including an extracellular IgV-like domain, a transmembrane region, and a cytoplasmic tail. PD-1 is expressed on activated T cells, B cells, macrophages, dendritic cells, and natural killer cells. Its cytoplasmic domain contains two tyrosine residues that form an immunoreceptor tyrosine-based inhibitory motif (ITIM) and an immunoreceptor tyrosine-based switch motif (ITSM), which play key roles in inhibiting T cell receptor signaling. PD-1 interacts with its ligands PD-L1 and PD-L2 to negatively regulate immune responses, contributing to peripheral tolerance and preventing autoimmune diseases. However, this inhibitory function can also suppress anti-tumor immunity, making PD-1 a promising target for cancer immunotherapy.
