@misc{indiciae547598ea93d8,
  title = {Tryptophan super-repressors with alanine 77 changes.},
  author = {D N Arvidson and J Pfau and J K Hatt and M Shapiro and F S Pecoraro and P Youderian},
  year = {1993},
  url = {https://pubmed.ncbi.nlm.nih.gov/8440721/},
  note = {Source identifier: 8440721}
}