Proenkephalin-A

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

**Definition:** Proenkephalin-A (267 aa, ~31 kDa) is encoded by the human PENK gene. This protein is involved in opioid receptor signaling.

**Synonyms:** - Preproenkephalin - Preproenkephalin A - Preproenkephalin-A - Proenkephalin - Proenkephalin A