Cytotoxic T-Lymphocyte Protein 4

**Semantic type:** Amino Acid, Peptide, or Protein|Immunologic Factor|Receptor

**Definition:** Cytotoxic T-lymphocyte protein 4 (223 aa, ~25 kDa) is encoded by the human CTLA4 gene. This protein is involved in the inhibition of T-cell mediated immune responses.

**Synonyms:** - CD152 - CD152 Antigen - CTLA-4 - CTLA4 - CTLA4 Protein - Cytotoxic T Lymphocyte-Associated Protein 4 - Cytotoxic T-Lymphocyte-Associated Antigen 4 - Cytotoxic T-Lymphocyte-Associated Protein 4 - Cytotoxic T-Lymphocyte-Associated Serine Esterase-4