trypsin inhibitor - Robuta Search

https://www.ncbi.nlm.nih.gov/Structure/pdb/1Y3V

Trypsin, cationic(1R,3AS,4R,8AS,8BR)-4-(2-BENZO[1,3]DIOXOL-5-YL-1-CYCLOPROPYL-3-OXO-DECAHYDRO-PYRROLO[3,4-A]PYRROLIZIN-4-YL)-BENZAMIDINECALCIUM ION

https://www.ncbi.nlm.nih.gov/Structure/pdb/3M35

CATIONIC TRYPSIN1-[3-(aminomethyl)phenyl]-n-[3-fluoro-2'-(methylsulfonyl)biphenyl-4-yl]-3-(trifluoromethyl)-1h-pyrazole-5-carboxamideCalcium Ion

https://www.rcsb.org/structure/3RDY

Crystal Structure of buckwheat trypsin inhibitor rBTI at 1.84 angstrom resolution