Plant trypsin inhibitors such as squash trypsin inhibitor. Plant proteinase inhibitors play important roles in natural plant defense. Proteinase inhibitors from squash seeds form an uniform family of small proteins cross-linked with three disulfide bridges.
Comment:The Arg or Lys side chain makes contacts with the Asp inside the substrate binding pocket of trypsin.
Structure:2BTC; Lys interacts with Asp of trypsin, active site triad and substrate specificity residues of trypsin are also highlighted - View structure with Cn3D