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- Conjugation:Unconjugated
- Protein/Peptide Type:Recombinant
- Source:CHO cells
- Species:Human
- Size:100 µg
- Storage Conditions:–20 °C
- Endotoxin Content:<0.06EU/µg
- Biological Activity:Measured by its ability to inhibit human T cell proliferation induced by CD275 [B7-H2] (human):Fc (human) (rec.) (Prod. No. CHI-HF-210B7H2) in the presence of anti-CD3.
- Gene ID:NP_036224.1
- Protein Synonyms:CRP1|CD28-related Protein-1|AILIM|Inducible T Cell Costimulator|ICOS
- Protein/Peptide Name:CD278
- Purity:98%
- Endotoxin Level:Low
- Formulation:Lyophilized from 0.2µm-filtered solution in PBS.
- Shipping Temperature:-20 °C, Blue Ice
- Cat. No.:102981-532
- Supplier no.:HF211ICOSC100
CD278, also called inducible costimulator (ICOS) or CRP1 (CD28-related protein-1), is a member of the growing CD28 family of immune costimulatory receptors. Other family members are CD28, CTLA-4 and PD-1. ICOS is expressed on most CD45RO+ cells. ICOS expression is upregulated within approximately 24-48 hours of activation on Th primed cells. B7-H2, a member of the B7 family of costimulatory ligands, has been identified as the ICOS ligand. The B7-H2/ICOS interaction appears to play roles in T cell dependent B cell activation and Th differentiation.