CTLA-4 Ligand

**Semantic type:** Amino Acid, Peptide, or Protein

**Definition:** Proteins that bind to cytotoxic T-lymphocyte protein 4, which is expressed on T-cells, and stimulate signaling that may play a role in the inhibition of T-cell activation. This group of proteins includes the T-lymphocyte activation antigens CD80 and CD86, which are expressed on antigen-presenting cells.

**Synonyms:** - CTLA4 Ligand - Cytotoxic T-Lymphocyte-Associated Protein 4 Ligand