[English] 日本語
Yorodumi- EMDB-38088: Cryo-EM structure of Staphylococcus aureus sigB-dependent RNAP-pr... -
+
Open data
-
Basic information
| Entry | ![]() | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Title | Cryo-EM structure of Staphylococcus aureus sigB-dependent RNAP-promoter open complex | |||||||||
Map data | ||||||||||
Sample |
| |||||||||
Keywords | RNA polymerase / transcription / Staphylococcus aureus / sigB | |||||||||
| Function / homology | Function and homology informationsigma factor activity / DNA-directed RNA polymerase complex / DNA-templated transcription initiation / ribonucleoside binding / DNA-directed RNA polymerase / DNA-directed RNA polymerase activity / protein dimerization activity / DNA-templated transcription / regulation of DNA-templated transcription / magnesium ion binding ...sigma factor activity / DNA-directed RNA polymerase complex / DNA-templated transcription initiation / ribonucleoside binding / DNA-directed RNA polymerase / DNA-directed RNA polymerase activity / protein dimerization activity / DNA-templated transcription / regulation of DNA-templated transcription / magnesium ion binding / DNA binding / zinc ion binding / cytoplasm Similarity search - Function | |||||||||
| Biological species | ![]() | |||||||||
| Method | single particle reconstruction / cryo EM / Resolution: 3.3 Å | |||||||||
Authors | Yuan L / Xu L / Liu Q / Feng Y | |||||||||
| Funding support | China, 1 items
| |||||||||
Citation | Journal: Nat Commun / Year: 2024Title: Structural basis of promoter recognition by Staphylococcus aureus RNA polymerase. Authors: Linggang Yuan / Qingyang Liu / Liqiao Xu / Bing Wu / Yu Feng / ![]() Abstract: Bacterial RNAP needs to form holoenzyme with σ factors to initiate transcription. While Staphylococcus aureus σ controls housekeeping functions, S. aureus σ regulates virulence, biofilm formation, ...Bacterial RNAP needs to form holoenzyme with σ factors to initiate transcription. While Staphylococcus aureus σ controls housekeeping functions, S. aureus σ regulates virulence, biofilm formation, persistence, cell internalization, membrane transport, and antimicrobial resistance. Besides the sequence difference, the spacers between the -35 element and -10 element of σ regulated promoters are shorter than those of σ regulated promoters. Therefore, how σ recognizes and initiates transcription from target promoters can not be inferred from that of the well studied σ. Here, we report the cryo-EM structures of S. aureus RNAP-promoter open complexes comprising σ and σ, respectively. Structural analyses, in combination with biochemical experiments, reveal the structural basis for the promoter specificity of S. aureus transcription. Although the -10 element of σ regulated promoters is recognized by domain σ as single-stranded DNA, the -10 element of σ regulated promoters is co-recognized by domains σ and σ as double-stranded DNA, accounting for the short spacers of σ regulated promoters. S. aureus RNAP is a validated target of antibiotics, and our structures pave the way for rational drug design targeting S. aureus RNAP. | |||||||||
| History |
|
-
Structure visualization
| Supplemental images |
|---|
-
Downloads & links
-EMDB archive
| Map data | emd_38088.map.gz | 38 MB | EMDB map data format | |
|---|---|---|---|---|
| Header (meta data) | emd-38088-v30.xml emd-38088.xml | 24.3 KB 24.3 KB | Display Display | EMDB header |
| Images | emd_38088.png | 157 KB | ||
| Filedesc metadata | emd-38088.cif.gz | 7.9 KB | ||
| Others | emd_38088_half_map_1.map.gz emd_38088_half_map_2.map.gz | 31.3 MB 31.3 MB | ||
| Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-38088 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-38088 | HTTPS FTP |
-Validation report
| Summary document | emd_38088_validation.pdf.gz | 1 MB | Display | EMDB validaton report |
|---|---|---|---|---|
| Full document | emd_38088_full_validation.pdf.gz | 1 MB | Display | |
| Data in XML | emd_38088_validation.xml.gz | 11.2 KB | Display | |
| Data in CIF | emd_38088_validation.cif.gz | 13.2 KB | Display | |
| Arichive directory | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-38088 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-38088 | HTTPS FTP |
-Related structure data
| Related structure data | ![]() 8x6gMC ![]() 8x6fC M: atomic model generated by this map C: citing same article ( |
|---|---|
| Similar structure data | Similarity search - Function & homology F&H Search |
-
Links
| EMDB pages | EMDB (EBI/PDBe) / EMDataResource |
|---|---|
| Related items in Molecule of the Month |
-
Map
| File | Download / File: emd_38088.map.gz / Format: CCP4 / Size: 40.6 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||
| Voxel size | X=Y=Z: 1.19 Å | ||||||||||||||||||||||||||||||||||||
| Density |
| ||||||||||||||||||||||||||||||||||||
| Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||
| Details | EMDB XML:
|
-Supplemental data
-Half map: #2
| File | emd_38088_half_map_1.map | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Projections & Slices |
| ||||||||||||
| Density Histograms |
-Half map: #1
| File | emd_38088_half_map_2.map | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Projections & Slices |
| ||||||||||||
| Density Histograms |
-
Sample components
+Entire : sigB-dependent RNAP-promoter open complex
+Supramolecule #1: sigB-dependent RNAP-promoter open complex
+Macromolecule #1: DNA-directed RNA polymerase subunit alpha
+Macromolecule #2: DNA-directed RNA polymerase subunit beta
+Macromolecule #3: DNA-directed RNA polymerase subunit beta'
+Macromolecule #4: Probable DNA-directed RNA polymerase subunit delta
+Macromolecule #5: DNA-directed RNA polymerase subunit omega
+Macromolecule #6: DNA-directed RNA polymerase subunit epsilon
+Macromolecule #7: RNA polymerase sigma factor
+Macromolecule #8: DNA (70-mer)
+Macromolecule #9: DNA (70-mer)
-Experimental details
-Structure determination
| Method | cryo EM |
|---|---|
Processing | single particle reconstruction |
| Aggregation state | particle |
-
Sample preparation
| Buffer | pH: 7.5 |
|---|---|
| Vitrification | Cryogen name: ETHANE |
-
Electron microscopy
| Microscope | FEI TITAN KRIOS |
|---|---|
| Image recording | Film or detector model: FEI FALCON IV (4k x 4k) / Average electron dose: 51.0 e/Å2 |
| Electron beam | Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN |
| Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 2.0 µm / Nominal defocus min: 1.0 µm |
| Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
-
Image processing
| Startup model | Type of model: EMDB MAP EMDB ID: |
|---|---|
| Final reconstruction | Resolution.type: BY AUTHOR / Resolution: 3.3 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 95089 |
| Initial angle assignment | Type: MAXIMUM LIKELIHOOD |
| Final angle assignment | Type: MAXIMUM LIKELIHOOD |
Movie
Controller
About Yorodumi



Keywords
Authors
China, 1 items
Citation




Z (Sec.)
Y (Row.)
X (Col.)




































FIELD EMISSION GUN

