7F0R image
Deposition Date 2021-06-06
Release Date 2022-07-27
Last Version Date 2024-06-12
Entry Detail
PDB ID:
7F0R
Keywords:
TRANSCRIPTION/DNA
Title:
Cryo-EM structure of Pseudomonas aeruginosa SutA transcription activation complex
Biological Source:
Source Organism:
Pseudomonas aeruginosa (strain ATCC 15692 / DSM 22644 / CIP 104116 / JCM 14847 / LMG 12228 / 1C / PRS 101 / PAO1) (Taxon ID: 208964)
synthetic construct (Taxon ID: 32630)
Host Organism:
Escherichia coli BL21(DE3)
Method Details:
Experimental Method:
ELECTRON MICROSCOPY
Resolution:
5.80 Å
Aggregation State:
PARTICLE
Reconstruction Method:
SINGLE PARTICLE
7F0R validation report
Macromolecular Entities
Protein Blast
Polymer Type:polypeptide(L)
Molecule:DNA-directed RNA polymerase subunit alpha
Gene (Uniprot):rpoA
Chain IDs:A, B
Chain Length:345
Number of Molecules:2
Biological Source:Pseudomonas aeruginosa (strain ATCC 15692 / DSM 22644 / CIP 104116 / JCM 14847 / LMG 12228 / 1C / PRS 101 / PAO1)
UniProt ID:O52760 Pfam ID:PF01193, PF01000, PF03118
Protein Blast
Polymer Type:polypeptide(L)
Molecule:DNA-directed RNA polymerase subunit beta
Gene (Uniprot):rpoB
Chain IDs:C
Chain Length:1359
Number of Molecules:1
Biological Source:Pseudomonas aeruginosa (strain ATCC 15692 / DSM 22644 / CIP 104116 / JCM 14847 / LMG 12228 / 1C / PRS 101 / PAO1)
UniProt ID:Q51561 Pfam ID:PF04563, PF04561, PF04565, PF10385, PF00562, PF04560
Protein Blast
Polymer Type:polypeptide(L)
Molecule:DNA-directed RNA polymerase subunit beta'
Gene (Uniprot):rpoC
Chain IDs:D
Chain Length:1412
Number of Molecules:1
Biological Source:Pseudomonas aeruginosa (strain ATCC 15692 / DSM 22644 / CIP 104116 / JCM 14847 / LMG 12228 / 1C / PRS 101 / PAO1)
UniProt ID:Q9HWC9 Pfam ID:PF04997, PF00623, PF04983, PF05000, PF04998
Protein Blast
Polymer Type:polypeptide(L)
Molecule:DNA-directed RNA polymerase subunit omega
Gene (Uniprot):rpoZ
Chain IDs:E
Chain Length:88
Number of Molecules:1
Biological Source:Pseudomonas aeruginosa (strain ATCC 15692 / DSM 22644 / CIP 104116 / JCM 14847 / LMG 12228 / 1C / PRS 101 / PAO1)
UniProt ID:Q9HTM1 Pfam ID:PF01192
Protein Blast
Polymer Type:polypeptide(L)
Molecule:RNA polymerase sigma factor RpoS
Gene (Uniprot):rpoS
Chain IDs:G (auth: F)
Chain Length:342
Number of Molecules:1
Biological Source:Pseudomonas aeruginosa (strain ATCC 15692 / DSM 22644 / CIP 104116 / JCM 14847 / LMG 12228 / 1C / PRS 101 / PAO1)
UniProt ID:P45684 Pfam ID:PF00140, PF04542, PF04539, PF04545
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Transcriptional factor SutA
Gene (Uniprot):PA5285
Chain IDs:F (auth: G)
Chain Length:109
Number of Molecules:1
Biological Source:Pseudomonas aeruginosa (strain ATCC 15692 / DSM 22644 / CIP 104116 / JCM 14847 / LMG 12228 / 1C / PRS 101 / PAO1)
UniProt ID:Q9HTR9 Pfam ID:PF20661
Polymer Type:polydeoxyribonucleotide
Molecule:DNA (70-MER)
Chain IDs:I (auth: H)
Chain Length:70
Number of Molecules:1
Biological Source:synthetic construct
Polymer Type:polydeoxyribonucleotide
Molecule:DNA (70-MER)
Chain IDs:H (auth: I)
Chain Length:70
Number of Molecules:1
Biological Source:synthetic construct
Ligand Molecules
MG
ZN
Primary Citation
Pseudomonas aeruginosa SutA wedges RNAP lobe domain open to facilitate promoter DNA unwinding.
Nat Commun 13 4204 4204 (2022)
PMID: 35859063 DOI: 10.1038/s41467-022-31871-7

Abstact

Pseudomonas aeruginosa (Pae) SutA adapts bacteria to hypoxia and nutrition-limited environment during chronic infection by increasing transcription activity of an RNA polymerase (RNAP) holoenzyme comprising the stress-responsive σ factor σS (RNAP-σS). SutA shows no homology to previously characterized RNAP-binding proteins. The structure and mode of action of SutA remain unclear. Here we determined cryo-EM structures of Pae RNAP-σS holoenzyme, Pae RNAP-σS holoenzyme complexed with SutA, and Pae RNAP-σS transcription initiation complex comprising SutA. The structures show SutA pinches RNAP-β protrusion and facilitates promoter unwinding by wedging RNAP-β lobe open. Our results demonstrate that SutA clears an energetic barrier to facilitate promoter unwinding of RNAP-σS holoenzyme.

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Primary Citation of related structures
7F0R