Robuta

https://www.ncbi.nlm.nih.gov/Structure/pdb/3T2N
ANTIBODY, FAB FRAGMENT, HEAVY CHAINANTIBODY, FAB FRAGMENT, LIGHT CHAINSERINE PROTEASE HEPSIN
fab fragmenthumanhepsinproteasecomplex
https://www.ncbi.nlm.nih.gov/Structure/cdd/pfam09272
pfam09272 (PSSM ID: 518793): Conserved Protein Domain Family Hepsin-SRCR, Members of this family form an extracellular domain of the serine protease hepsin
conserved proteincdddomainfamilyhepsin