[English] 日本語
![](img/lk-miru.gif)
- EMDB-8777: Pol I Initial Transcribing Complex with a truncated scaffold at 6... -
+
Open data
-
Basic information
Entry | Database: EMDB / ID: EMD-8777 | ||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Title | Pol I Initial Transcribing Complex with a truncated scaffold at 6.9 angstrom | ||||||||||||||||||
![]() | RNA polymerase I Initial Transcribing Complex with a truncated scaffold | ||||||||||||||||||
![]() |
| ||||||||||||||||||
Function / homology | ![]() RNA polymerase I transcription regulatory region sequence-specific DNA binding / RNA polymerase I core factor complex / RNA polymerase I general transcription initiation factor binding / RNA polymerase I general transcription initiation factor activity / RNA polymerase transcription factor SL1 complex / RNA polymerase I core promoter sequence-specific DNA binding / RNA polymerase I preinitiation complex assembly / RNA Polymerase I Transcription Initiation / Processing of Capped Intron-Containing Pre-mRNA / RNA Polymerase III Transcription Initiation From Type 2 Promoter ...RNA polymerase I transcription regulatory region sequence-specific DNA binding / RNA polymerase I core factor complex / RNA polymerase I general transcription initiation factor binding / RNA polymerase I general transcription initiation factor activity / RNA polymerase transcription factor SL1 complex / RNA polymerase I core promoter sequence-specific DNA binding / RNA polymerase I preinitiation complex assembly / RNA Polymerase I Transcription Initiation / Processing of Capped Intron-Containing Pre-mRNA / RNA Polymerase III Transcription Initiation From Type 2 Promoter / RNA Pol II CTD phosphorylation and interaction with CE / Formation of the Early Elongation Complex / mRNA Capping / regulation of cell size / RNA polymerase II transcribes snRNA genes / TP53 Regulates Transcription of DNA Repair Genes / RNA Polymerase II Promoter Escape / RNA Polymerase II Transcription Pre-Initiation And Promoter Opening / RNA Polymerase II Transcription Initiation / RNA Polymerase II Transcription Initiation And Promoter Clearance / RNA-templated transcription / termination of RNA polymerase III transcription / RNA Polymerase II Pre-transcription Events / Formation of TC-NER Pre-Incision Complex / termination of RNA polymerase I transcription / transcription initiation at RNA polymerase III promoter / RNA Polymerase I Promoter Escape / nucleolar large rRNA transcription by RNA polymerase I / Gap-filling DNA repair synthesis and ligation in TC-NER / transcription initiation at RNA polymerase I promoter / transcription by RNA polymerase I / Estrogen-dependent gene expression / transcription by RNA polymerase III / Dual incision in TC-NER / transcription elongation by RNA polymerase I / RNA polymerase I complex / RNA polymerase III complex / RNA polymerase III activity / RNA polymerase II, core complex / tRNA transcription by RNA polymerase III / RNA polymerase I activity / RNA polymerase II activity / TBP-class protein binding / transcription elongation by RNA polymerase II / promoter-specific chromatin binding / transcription initiation at RNA polymerase II promoter / ribonucleoside binding / DNA-directed RNA polymerase / peroxisome / ribosome biogenesis / RNA polymerase II-specific DNA-binding transcription factor binding / transcription by RNA polymerase II / nucleic acid binding / protein dimerization activity / nucleolus / negative regulation of transcription by RNA polymerase II / DNA binding / zinc ion binding / nucleoplasm / nucleus / metal ion binding / cytoplasm Similarity search - Function | ||||||||||||||||||
Biological species | ![]() ![]() | ||||||||||||||||||
Method | single particle reconstruction / cryo EM / Resolution: 6.9 Å | ||||||||||||||||||
![]() | Han Y / He Y | ||||||||||||||||||
Funding support | ![]()
| ||||||||||||||||||
![]() | ![]() Title: Structural mechanism of ATP-independent transcription initiation by RNA polymerase I. Authors: Yan Han / Chunli Yan / Thi Hoang Duong Nguyen / Ashleigh J Jackobel / Ivaylo Ivanov / Bruce A Knutson / Yuan He / ![]() Abstract: Transcription initiation by RNA Polymerase I (Pol I) depends on the Core Factor (CF) complex to recognize the upstream promoter and assemble into a Pre-Initiation Complex (PIC). Here, we solve a ...Transcription initiation by RNA Polymerase I (Pol I) depends on the Core Factor (CF) complex to recognize the upstream promoter and assemble into a Pre-Initiation Complex (PIC). Here, we solve a structure of Pol I-CF-DNA to 3.8 Å resolution using single-particle cryo-electron microscopy. The structure reveals a bipartite architecture of Core Factor and its recognition of the promoter from -27 to -16. Core Factor's intrinsic mobility correlates well with different conformational states of the Pol I cleft, in addition to the stabilization of either Rrn7 N-terminal domain near Pol I wall or the tandem winged helix domain of A49 at a partially overlapping location. Comparison of the three states in this study with the Pol II system suggests that a ratchet motion of the Core Factor-DNA sub-complex at upstream facilitates promoter melting in an ATP-independent manner, distinct from a DNA translocase actively threading the downstream DNA in the Pol II PIC. | ||||||||||||||||||
History |
|
-
Structure visualization
Movie |
![]() |
---|---|
Structure viewer | EM map: ![]() ![]() ![]() |
Supplemental images |
-
Downloads & links
-EMDB archive
Map data | ![]() | 1.2 MB | ![]() | |
---|---|---|---|---|
Header (meta data) | ![]() ![]() | 33.7 KB 33.7 KB | Display Display | ![]() |
FSC (resolution estimation) | ![]() | 4.7 KB | Display | ![]() |
Images | ![]() | 135.3 KB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Validation report
Summary document | ![]() | 79.2 KB | Display | ![]() |
---|---|---|---|---|
Full document | ![]() | 78.3 KB | Display | |
Data in XML | ![]() | 495 B | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 8771C ![]() 8772C ![]() 8773C ![]() 8774C ![]() 8775C ![]() 8776C ![]() 5w5yC ![]() 5w64C ![]() 5w65C ![]() 5w66C C: citing same article ( |
---|---|
Similar structure data |
-
Links
EMDB pages | ![]() ![]() |
---|---|
Related items in Molecule of the Month |
-
Map
File | ![]() | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Annotation | RNA polymerase I Initial Transcribing Complex with a truncated scaffold | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 2.36 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Density |
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
CCP4 map header:
|
-Supplemental data
-
Sample components
+Entire : RNA Polymerase I Initial Transcribing Complex with a truncated sc...
+Supramolecule #1: RNA Polymerase I Initial Transcribing Complex with a truncated sc...
+Macromolecule #1: DNA-directed RNA polymerase I subunit RPA190
+Macromolecule #2: DNA-directed RNA polymerase I subunit RPA135
+Macromolecule #3: DNA-directed RNA polymerases I and III subunit RPAC1
+Macromolecule #4: DNA-directed RNA polymerase I subunit RPA14
+Macromolecule #5: DNA-directed RNA polymerases I, II, and III subunit RPABC1
+Macromolecule #6: DNA-directed RNA polymerases I, II, and III subunit RPABC2
+Macromolecule #7: DNA-directed RNA polymerase I subunit RPA43
+Macromolecule #8: DNA-directed RNA polymerases I, II, and III subunit RPABC3
+Macromolecule #9: DNA-directed RNA polymerase I subunit RPA12
+Macromolecule #10: DNA-directed RNA polymerases I, II, and III subunit RPABC5
+Macromolecule #11: DNA-directed RNA polymerases I and III subunit RPAC2
+Macromolecule #12: DNA-directed RNA polymerases I, II, and III subunit RPABC4
+Macromolecule #13: DNA-directed RNA polymerase I subunit RPA49
+Macromolecule #14: DNA-directed RNA polymerase I subunit RPA34
+Macromolecule #15: RNA polymerase I-specific transcription initiation factor RRN6
+Macromolecule #16: RNA polymerase I-specific transcription initiation factor RRN7
+Macromolecule #17: RNA polymerase I-specific transcription initiation factor RRN11
+Macromolecule #18: RNA
+Macromolecule #19: template strand DNA
+Macromolecule #20: upstream non-template strand DNA
+Macromolecule #21: downstream non-template strand DNA
-Experimental details
-Structure determination
Method | cryo EM |
---|---|
![]() | single particle reconstruction |
Aggregation state | particle |
-
Sample preparation
Buffer | pH: 7.6 |
---|---|
Grid | Model: Quantifoil S7/2 / Material: COPPER / Mesh: 400 / Support film - Material: CARBON / Support film - topology: CONTINUOUS / Pretreatment - Type: GLOW DISCHARGE / Pretreatment - Atmosphere: AIR |
Vitrification | Cryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 277 K |
-
Electron microscopy
Microscope | JEOL 3200FS |
---|---|
Image recording | Film or detector model: GATAN K2 SUMMIT (4k x 4k) / Detector mode: SUPER-RESOLUTION / Average exposure time: 12.0 sec. / Average electron dose: 17.2 e/Å2 |
Electron beam | Acceleration voltage: 200 kV / Electron source: ![]() |
Electron optics | Calibrated defocus max: 5.0 µm / Calibrated defocus min: 2.0 µm / Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Cs: 2.0 mm / Nominal magnification: 15000 |
Sample stage | Specimen holder model: GATAN 626 SINGLE TILT LIQUID NITROGEN CRYO TRANSFER HOLDER Cooling holder cryogen: NITROGEN |
+
Image processing
-Atomic model buiding 1
Refinement | Space: REAL / Protocol: FLEXIBLE FIT |
---|