@misc{indiciae048c4129d7c5,
  title = {Microbial isopenicillin N synthase genes: structure, function, diversity and evolution.},
  author = {G Cohen and D Shiffman and M Mevarech and Y Aharonowitz},
  year = {1990},
  doi = {10.1016/0167-7799(90)90148-q},
  url = {https://pubmed.ncbi.nlm.nih.gov/1366527/},
  note = {Source identifier: 1366527}
}