Programmed Cell Death 1 Ligand 1

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

**Definition:** Programmed cell death 1 ligand 1 (290 aa, ~33 kDa) is encoded by the human CD274 gene. This protein is involved in the mediation of both the activation and proliferation of T cells.

**Synonyms:** - B7 Homolog 1 - B7-H1 - CD Antigen CD274 - CD274 - CD274 Antigen - PD-L1 - PD-L1 - PDL1 - Pdcd1 Ligand 1 - Programmed Death Ligand 1