@misc{indiciae93e9d1a491f2,
  title = {Structure and function of bacterial sigma factors.},
  author = {J D Helmann and M J Chamberlin},
  year = {1988},
  doi = {10.1146/annurev.bi.57.070188.004203},
  url = {https://pubmed.ncbi.nlm.nih.gov/3052291/},
  note = {Source identifier: 3052291}
}