Serpin B4

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

**Definition:** Serpin B4 (390 aa, ~45 kDa) is encoded by the human SERPINB4 gene. This protein plays a role in the inhibition of protease activity for enzymes such as granzyme M.

**Synonyms:** - Leupin - PI-11 - Peptidase Inhibitor 11 - SCCA-2 - SERPINB4 - Squamous Cell Carcinoma Antigen 2