Reactivity | MuSpecies Glossary |
Applications | Flow |
Clonality | Polyclonal |
Host | Goat |
Conjugate | Allophycocyanin |
Conjugate | Catalog # | Availability | Size | Price |
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Allophycocyanin | FAB1019A-025 | |||
Biotin | BAF1019 | |||
Unconjugated | AF1019 | |||
Immunogen | Mouse myeloma cell line NS0-derived recombinant mouse B7‑H1/PD‑L1 Phe19-Thr238 Accession # Q9EP73 |
Specificity | Detects mouse B7‑H1/PD‑L1 in direct ELISAs and Western blots. In direct ELISAs, approximately 20% cross-reactivity with recombinant human B7-H1 is observed. |
Source | N/A |
Isotype | IgG |
Clonality | Polyclonal |
Host | Goat |
Gene | CD274 |
Purity Statement | Antigen Affinity-purified |
Innovator's Reward | Test in a species/application not listed above to receive a full credit towards a future purchase. |
Dilutions |
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Publications |
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Storage | Protect from light. Do not freeze.
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Buffer | Supplied in a saline solution containing BSA and Sodium Azide. |
Preservative | Sodium Azide |
Mouse B7 Homolog 1 (B7-H1), also called Programmed Death Ligand 1 (PD-L1) and Programmed Cell Death 1 Ligand 1 (PDCD1L1), is a member of the B7 family of proteins that provide signals for regulating T-cell activation and tolerance (1-4). Other family members include B7-1, B7-2, B7-H2, B7-H3 and PD-L2. B7 proteins are immunoglobulin (Ig) superfamily members with extracellular Ig-V-like and Ig-C-like domains and a short cytoplasmic region. Among the family members, they share from 20-40% amino acid (aa) sequence identity. The cloned mouse B7-H1/PD-L1 cDNA encodes a 290 aa type I membrane precursor protein with a putative 18 aa signal peptide, a 220 aa extracellular region containing one V-like and one C-like Ig domain, a 22 aa transmembrane region, and a 30 aa cytoplasmic domain. Mouse and human B7-H1/PD-L1 share approximately 70% aa sequence identity. B7-H1/PD-L1 is one of two ligands for Programmed Death-1 (PD-1), a member of the CD28 family of immunoreceptors. The other identified ligand is PD-L2. Mouse B7-H1/PD-L1 and PD-L2 share approximately 34% aa sequence identity and have similar functions. B7-H1/PD-L1 is constitutively expressed in various lymphoid and non-lymphoid organs including placenta, heart, pancreas, lung, liver, and endothelium (1‑4). The expression of B7-H1/PD-L1 is detected on B cells, T cells, monocytes, dendritic cells and thymic epithelial cells. IFN-gamma treatment induces B7-H1/PD-L1 expression in monocytes, dendritic cells, and endothelial cells. B7-H1/PD-L1 expression is also upregulated in a variety of tumor cell lines. On previously activated T cells, B7-H1/PD-L1 interaction with PD-1 inhibits TCR-mediated proliferation and cytokine production, suggesting an inhibitory role in regulating immune responses. In contrast, a costimulatory function for the PD-1 ligands on resting T cells has also been reported (1-4).
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