| PDB | Method | Taxonomy | Organism | Name | Reference_pub | Resolution | Stage | Contents | Ligands |
|---|---|---|---|---|---|---|---|---|---|
| 5UI8 | XRD | Prokaryote | Escherichia coli, Klebsiella pneumoniae | Structure of sigma N-holoenzyme | 28223493 | 3.76 Å | RNAP | RNA polymerase alpha/beta/beta'/omaga/sigma-54 factor subunit | ZN MG |
| 6IDO | XRD | Prokaryote | Escherichia coli, Klebsiella pneumoniae | Crystal structure of klebsiella pneumoniae sigma4 of sigmas fusing with the RNA polymerase beta-flap-tip-helix in complex with -35 element DNA | 31293000 | 3.75 Å | Subunit | RNA polymerase sigma factor Rpos,RNA polymerase beta-flap-tip-helix |