| Index | Ligand Name | Structure | PDB code | Compound Potency nM |
|---|---|---|---|---|
| 1 | c4a | Human beta tryptase II with inhibitor CRA-28427 | 2fs9 | 3 |
| 2 | c3a | Human beta-tryptase II with inhibitor CRA-29382 | 2fs8 | 25 |
| 3 | c3a | human beta tryptase II complexed with activated ketone inhibitor CRA-29382 | 2fxr | 25 |