@misc{indiciaedff9430ebddb,
  title = {Circularly permuted beta-lactamase from Staphylococcus aureus PC1.},
  author = {U Pieper and K Hayakawa and Z Li and O Herzberg},
  year = {1997},
  doi = {10.1021/bi9705117},
  url = {https://pubmed.ncbi.nlm.nih.gov/9220963/},
  note = {Source identifier: 9220963}
}