Orexin

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

**Definition:** Orexin (131 aa, ~13 kDa) is encoded by the human HCRT gene. This protein is involved in neuropeptide-dependent signaling and feeding behavior.

**Synonyms:** - Hcrt - Hypocretin - Prepro-Orexin - Preproorexin