https://www.ncbi.nlm.nih.gov/Structure/pdb/5NSS
5NSS: Cryo-EM structure of RNA polymerase-sigma54 holoenzyme with promoter DNA and transcription...
DNA-directed RNA polymerase subunit alphaDNA-directed RNA polymerase subunit betaDNA-directed RNA polymerase subunit beta',DNA-directed RNA polymerase subunit...
https://www.jic.ac.uk/research-impact/publications/the-role-of-bacterial-enhancer-binding-proteins-as-specialized-activators-of-sigma54-dependent-transcription/
The Role of Bacterial Enhancer Binding Proteins as Specialized Activators of sigma54-Dependent...
the role