| Function | Costimulatory molecule that belongs to the immunoglobulin superfamily that plays an important role in T-lymphocyte activation. Acts as the primary auxiliary signal augmenting the MHC/TCR signal in naive T-cells together with the CD28 receptor which is constitutively expressed on the cell surface of T-cells. In turn, activates different signaling pathways such as NF-kappa-B or MAPK leading to the production of different cytokines. In addition, CD28/CD80 costimulatory signal stimulates glucose metabolism and ATP synthesis of T-cells by activating the PI3K/Akt signaling pathway. Acts also as a regulator of PDL1/PDCD1 interactions to limit excess engagement of PDL1 and its inhibitory role in immune responses. Expressed on B-cells, plays a critical role in regulating interactions between B-cells and T-cells in both early and late germinal center responses, which are crucial for the generation of effective humoral immune responses. |
| Protein Name | T-Lymphocyte Activation Antigen Cd80Activation B7-1 AntigenB7Cd Antigen Cd80 |
| Database Links | Reactome: R-MMU-1257604Reactome: -MMU-389356Reactome: -MMU-389357Reactome: -MMU-389359Reactome: -MMU-389513Reactome: -MMU-6811558 |
| Cellular Localisation | Cell MembraneSingle-Pass Type I Membrane Protein |
| Alternative Protein Names | T-Lymphocyte Activation Antigen Cd80 proteinActivation B7-1 Antigen proteinB7 proteinCd Antigen Cd80 proteinCd80 proteinB7 protein |
Information sourced from Uniprot.org
