Apelin

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

**Definition:** Apelin (77 aa, ~9 kDa) is encoded by the human APLN gene. This protein is involved in both the inhibition of HIV-1 entry into cells and in immune responses.

**Synonyms:** - AGTRL1 Ligand - APJ Endogenous Ligand - APLN