Met-Enkephalin

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

**Definition:** Met-enkephalin (5 aa, ~1 kDa) is encoded by the human PENK and POMC genes. This protein plays a role in the activation of delta opioid receptors.

**Synonyms:** - OGF - Opioid Growth Factor - Tyr-Gly-Gly-Phe-Met - YGGPM - [Met(5)]-Enkephalin