Pepsin A

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

**Definition:** Pepsin A (388 aa, ~42 kDa) is encoded by the human PGA3, PGA4 and PGA5 genes. This protein is involved in the digestion of a wide variety of dietary proteins.

**Synonyms:** - EC 3.4.23.1 - Group I Pepsinogen - PGA - PGA3 - PGA4 - PGA5 - Pepsin A-4 - Pepsin A-5 - Pepsinogen 3 - Pepsinogen 4 - Pepsinogen 5 - Pepsinogen A - Pepsinogen A3 - Pepsinogen A4 - Pepsinogen A5 - Pepsinogen Group I - Pepsinogen-3 - Pepsinogen-4 - Pepsinogen-5