+Open data
-Basic information
Entry | Database: EMDB / ID: EMD-14449 | |||||||||
---|---|---|---|---|---|---|---|---|---|---|
Title | Structure of yeast RNA Polymerase III Delta C53-C37-C11 | |||||||||
Map data | Pol III Delta C53/C37/C11 Sharpened with LocalDeblur | |||||||||
Sample |
| |||||||||
Function / homology | Function and homology information RNA polymerase III activity / 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 / Formation of TC-NER Pre-Incision Complex / RNA polymerase II transcribes snRNA genes ...RNA polymerase III activity / 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 / Formation of TC-NER Pre-Incision Complex / RNA polymerase II transcribes snRNA genes / RNA Polymerase I Promoter Escape / TP53 Regulates Transcription of DNA Repair Genes / Estrogen-dependent gene expression / 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 / Dual incision in TC-NER / RNA polymerase I activity / termination of RNA polymerase I transcription / transcription initiation at RNA polymerase III promoter / tRNA transcription by RNA polymerase III / 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 elongation by RNA polymerase I / RNA polymerase I complex / transcription by RNA polymerase I / RNA polymerase III complex / transcription by RNA polymerase III / RNA polymerase II, core complex / nucleotidyltransferase activity / transcription elongation by RNA polymerase II / transcription initiation at RNA polymerase II promoter / ribonucleoside binding / DNA-directed 5'-3' RNA polymerase activity / DNA-directed RNA polymerase / peroxisome / single-stranded DNA binding / ribosome biogenesis / transcription by RNA polymerase II / protein dimerization activity / nucleotide binding / nucleolus / mitochondrion / DNA binding / zinc ion binding / nucleoplasm / metal ion binding / nucleus / cytosol / cytoplasm Similarity search - Function | |||||||||
Biological species | Saccharomyces cerevisiae W303 (yeast) / synthetic construct (others) | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 3.9 Å | |||||||||
Authors | Girbig M / Mueller CW | |||||||||
Funding support | Germany, 1 items
| |||||||||
Citation | Journal: Cell Rep / Year: 2022 Title: Architecture of the yeast Pol III pre-termination complex and pausing mechanism on poly(dT) termination signals. Authors: Mathias Girbig / Juanjuan Xie / Helga Grötsch / Domenico Libri / Odil Porrua / Christoph W Müller / Abstract: RNA polymerase (Pol) III is specialized to transcribe short, abundant RNAs, for which it terminates transcription on polythymine (dT) stretches on the non-template (NT) strand. When Pol III reaches ...RNA polymerase (Pol) III is specialized to transcribe short, abundant RNAs, for which it terminates transcription on polythymine (dT) stretches on the non-template (NT) strand. When Pol III reaches the termination signal, it pauses and forms the pre-termination complex (PTC). Here, we report cryoelectron microscopy (cryo-EM) structures of the yeast Pol III PTC and complementary functional states at resolutions of 2.7-3.9 Å. Pol III recognizes the poly(dT) termination signal with subunit C128 that forms a hydrogen-bond network with the NT strand and, thereby, induces pausing. Mutating key interacting residues interferes with transcription termination in vitro, impairs yeast growth, and causes global termination defects in vivo, confirming our structural results. Additional cryo-EM analysis reveals that C53-C37, a Pol III subcomplex and key termination factor, participates indirectly in Pol III termination. We propose a mechanistic model of Pol III transcription termination and rationalize why Pol III, unlike Pol I and Pol II, terminates on poly(dT) signals. | |||||||||
History |
|
-Structure visualization
Supplemental images |
---|
-Downloads & links
-EMDB archive
Map data | emd_14449.map.gz | 146.7 MB | EMDB map data format | |
---|---|---|---|---|
Header (meta data) | emd-14449-v30.xml emd-14449.xml | 38.5 KB 38.5 KB | Display Display | EMDB header |
FSC (resolution estimation) | emd_14449_fsc.xml | 9.3 KB | Display | FSC data file |
Images | emd_14449.png | 75.6 KB | ||
Others | emd_14449_additional_1.map.gz emd_14449_half_map_1.map.gz emd_14449_half_map_2.map.gz | 146.6 MB 52 MB 52 MB | ||
Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-14449 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-14449 | HTTPS FTP |
-Related structure data
Related structure data | 7z1nMC 7z1lC 7z1mC 7z1oC M: atomic model generated by this map C: citing same article (ref.) |
---|---|
Similar structure data | Similarity search - Function & homologyF&H Search |
-Links
EMDB pages | EMDB (EBI/PDBe) / EMDataResource |
---|---|
Related items in Molecule of the Month |
-Map
File | Download / File: emd_14449.map.gz / Format: CCP4 / Size: 158 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Annotation | Pol III Delta C53/C37/C11 Sharpened with LocalDeblur | ||||||||||||||||||||||||||||||||||||
Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 1.053 Å | ||||||||||||||||||||||||||||||||||||
Density |
| ||||||||||||||||||||||||||||||||||||
Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
|
-Supplemental data
-Additional map: Pol III Delta C53/C37/C11 Unsharpened map
File | emd_14449_additional_1.map | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Annotation | Pol III Delta C53/C37/C11 Unsharpened map | ||||||||||||
Projections & Slices |
| ||||||||||||
Density Histograms |
-Half map: Pol III Delta C53/C37/C11 Half map 2, not resampled
File | emd_14449_half_map_1.map | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Annotation | Pol III Delta C53/C37/C11 Half map 2, not resampled | ||||||||||||
Projections & Slices |
| ||||||||||||
Density Histograms |
-Half map: Pol III Delta C53/C37/C11 Half map 1, not resampled
File | emd_14449_half_map_2.map | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Annotation | Pol III Delta C53/C37/C11 Half map 1, not resampled | ||||||||||||
Projections & Slices |
| ||||||||||||
Density Histograms |
-Sample components
+Entire : Yeast RNA Polymerase III Delta C53-C37-C11
+Supramolecule #1: Yeast RNA Polymerase III Delta C53-C37-C11
+Macromolecule #1: DNA-directed RNA polymerase III subunit RPC1
+Macromolecule #2: DNA-directed RNA polymerase III subunit RPC2
+Macromolecule #3: DNA-directed RNA polymerases I and III subunit RPAC1
+Macromolecule #4: DNA-directed RNA polymerase III subunit RPC9
+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 III subunit RPC8
+Macromolecule #8: DNA-directed RNA polymerases I, II, and III subunit RPABC3
+Macromolecule #9: DNA-directed RNA polymerases I, II, and III subunit RPABC5
+Macromolecule #10: DNA-directed RNA polymerases I and III subunit RPAC2
+Macromolecule #11: DNA-directed RNA polymerases I, II, and III subunit RPABC4
+Macromolecule #12: DNA-directed RNA polymerase III subunit RPC3
+Macromolecule #13: DNA-directed RNA polymerase III subunit RPC6
+Macromolecule #14: DNA-directed RNA polymerase III subunit RPC7
+Macromolecule #15: RNA
+Macromolecule #16: NT-DNA
+Macromolecule #17: T-DNA
+Macromolecule #18: ZINC ION
+Macromolecule #19: MAGNESIUM ION
+Macromolecule #20: CHAPSO
-Experimental details
-Structure determination
Method | cryo EM |
---|---|
Processing | single particle reconstruction |
Aggregation state | particle |
-Sample preparation
Concentration | 2 mg/mL | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Buffer | pH: 7.5 Component:
| ||||||||||||
Grid | Model: Quantifoil R2/1 / Material: COPPER / Mesh: 200 / Support film - Material: CARBON / Support film - topology: HOLEY / Pretreatment - Type: GLOW DISCHARGE | ||||||||||||
Vitrification | Cryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 277.15 K / Instrument: FEI VITROBOT MARK IV |
-Electron microscopy
Microscope | TFS KRIOS |
---|---|
Electron beam | Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN |
Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELDBright-field microscopy / Nominal defocus max: 2.5 µm / Nominal defocus min: 1.0 µm |
Image recording | Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Average electron dose: 39.6 e/Å2 |
Experimental equipment | Model: Titan Krios / Image courtesy: FEI Company |
-Image processing
-Atomic model buiding 1
Refinement | Protocol: OTHER |
---|---|
Output model | PDB-7z1n: |