Kunitz STI protease inhibitor

Trypsin and protease inhibitor
Structure of a Kunitz-type trypsin inhibitor.
Identifiers
SymbolKunitz_legume
PfamPF00197
InterProIPR002160
PROSITEPDOC00255
SCOP21tie / SCOPe / SUPFAM
Available protein structures:
PDB  1ava​, 1avu​, 1ba7​ , 1eyl​, 1fmz​, 1fn0​, 1r8n​, 1tie​, 1wba​, 1wbc​, 1xg6​, 2bea​, 2beb​, 2esu​, 2et2​, 2iwt​, 2wbc​, 4wbcIPR002160 PF00197 (ECOD; PDBsum)  
AlphaFold

Kunitz soybean trypsin inhibitor is a type of protein contained in legume seeds which functions as a protease inhibitor. Kunitz-type soybean trypsin inhibitors are usually specific for either trypsin or chymotrypsin. They are thought to protect seeds against consumption by animal predators.