@misc{indiciaedddc122be35a,
  title = {The extracytoplasmic function (ECF) sigma factors.},
  author = {John D Helmann},
  year = {2002},
  doi = {10.1016/s0065-2911(02)46002-x},
  url = {https://pubmed.ncbi.nlm.nih.gov/12073657/},
  note = {Source identifier: 12073657}
}