CD80 (B7-1) and CD86 (B7-2) are ligands of T cell critical costimulatory molecule CD28 and of an inhibitory receptor CTLA-4 (CD152). The both B7 molecules are expressed on professional antigen-presenting cells and are essential for T cell activation, the both molecules can also substitute for each other in this process. The question what are the differences in CD80 and CD86 competency has not been fully elucidated yet; there are still conflicts in results about their respective roles in initiation or sustaining of the T cell immune response.
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Protein Aliases: Activation B7-1 antigen; B-lymphocyte activation antigen B7; B7; B7-1; B7.1; BB1; Cd28l; CD28LG; CD28LG1; CD80; CD80 antigen (CD28 antigen ligand 1, B7-1 antigen); costimulatory factor CD80; costimulatory molecule variant IgV-CD80; CTLA-4 counter-receptor B7.1; LAB7; Ly-53; Ly53; MIC17; T-lymphocyte activation antigen CD80; TS/A-1
Gene Aliases: B7; B7-1; B7.1; BB1; CD28LG; CD28LG1; CD80; LAB7
UniProt ID: (Human) P33681
Entrez Gene ID: (Human) 941