+Open data
-Basic information
Entry | Database: EMDB / ID: EMD-40972 | |||||||||
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Title | CryoEM map of TR-TRAP | |||||||||
Map data | CryoEM map of TR-TRAP | |||||||||
Sample |
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Keywords | mouse mediator / complex / GENE REGULATION / CKM module | |||||||||
Biological species | Homo sapiens (human) | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 7.01 Å | |||||||||
Authors | Zhao H / Asturias F | |||||||||
Funding support | United States, 2 items
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Citation | Journal: Mol Cell / Year: 2024 Title: An IDR-dependent mechanism for nuclear receptor control of Mediator interaction with RNA polymerase II. Authors: Haiyan Zhao / Jiaqin Li / Yufei Xiang / Sohail Malik / Supriya V Vartak / Giovana M B Veronezi / Natalie Young / McKayla Riney / Jens Kalchschmidt / Andrea Conte / Seol Kyoung Jung / ...Authors: Haiyan Zhao / Jiaqin Li / Yufei Xiang / Sohail Malik / Supriya V Vartak / Giovana M B Veronezi / Natalie Young / McKayla Riney / Jens Kalchschmidt / Andrea Conte / Seol Kyoung Jung / Srinivas Ramachandran / Robert G Roeder / Yi Shi / Rafael Casellas / Francisco J Asturias / Abstract: The essential Mediator (MED) coactivator complex plays a well-understood role in regulation of basal transcription in all eukaryotes, but the mechanism underlying its role in activator-dependent ...The essential Mediator (MED) coactivator complex plays a well-understood role in regulation of basal transcription in all eukaryotes, but the mechanism underlying its role in activator-dependent transcription remains unknown. We investigated modulation of metazoan MED interaction with RNA polymerase II (RNA Pol II) by antagonistic effects of the MED26 subunit and the CDK8 kinase module (CKM). Biochemical analysis of CKM-MED showed that the CKM blocks binding of the RNA Pol II carboxy-terminal domain (CTD), preventing RNA Pol II interaction. This restriction is eliminated by nuclear receptor (NR) binding to CKM-MED, which enables CTD binding in a MED26-dependent manner. Cryoelectron microscopy (cryo-EM) and crosslinking-mass spectrometry (XL-MS) revealed that the structural basis for modulation of CTD interaction with MED relates to a large intrinsically disordered region (IDR) in CKM subunit MED13 that blocks MED26 and CTD interaction with MED but is repositioned upon NR binding. Hence, NRs can control transcription initiation by priming CKM-MED for MED26-dependent RNA Pol II interaction. | |||||||||
History |
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-Structure visualization
Supplemental images |
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-Downloads & links
-EMDB archive
Map data | emd_40972.map.gz | 79.1 MB | EMDB map data format | |
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Header (meta data) | emd-40972-v30.xml emd-40972.xml | 17.6 KB 17.6 KB | Display Display | EMDB header |
FSC (resolution estimation) | emd_40972_fsc.xml | 12.9 KB | Display | FSC data file |
Images | emd_40972.png | 103 KB | ||
Filedesc metadata | emd-40972.cif.gz | 4.2 KB | ||
Others | emd_40972_half_map_1.map.gz emd_40972_half_map_2.map.gz | 77.5 MB 77.5 MB | ||
Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-40972 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-40972 | HTTPS FTP |
-Validation report
Summary document | emd_40972_validation.pdf.gz | 856.1 KB | Display | EMDB validaton report |
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Full document | emd_40972_full_validation.pdf.gz | 855.7 KB | Display | |
Data in XML | emd_40972_validation.xml.gz | 17 KB | Display | |
Data in CIF | emd_40972_validation.cif.gz | 22.6 KB | Display | |
Arichive directory | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-40972 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-40972 | HTTPS FTP |
-Related structure data
-Links
EMDB pages | EMDB (EBI/PDBe) / EMDataResource |
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-Map
File | Download / File: emd_40972.map.gz / Format: CCP4 / Size: 83.7 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||
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Annotation | CryoEM map of TR-TRAP | ||||||||||||||||||||||||||||||||||||
Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 2.22 Å | ||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
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-Supplemental data
-Half map: Half Map 1
File | emd_40972_half_map_1.map | ||||||||||||
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Annotation | Half Map 1 | ||||||||||||
Projections & Slices |
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Density Histograms |
-Half map: Half Map 2
File | emd_40972_half_map_2.map | ||||||||||||
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Annotation | Half Map 2 | ||||||||||||
Projections & Slices |
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Density Histograms |
-Sample components
-Entire : TR-TRAP/Mediator coactivator complex
Entire | Name: TR-TRAP/Mediator coactivator complex |
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Components |
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-Supramolecule #1: TR-TRAP/Mediator coactivator complex
Supramolecule | Name: TR-TRAP/Mediator coactivator complex / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#26 |
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Source (natural) | Organism: Homo sapiens (human) |
Molecular weight | Theoretical: 1.0 MDa |
-Experimental details
-Structure determination
Method | cryo EM |
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Processing | single particle reconstruction |
Aggregation state | particle |
-Sample preparation
Concentration | 0.1 mg/mL |
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Buffer | pH: 7.9 |
Sugar embedding | Material: ice |
Vitrification | Cryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 277 K / Instrument: HOMEMADE PLUNGER |
-Electron microscopy
Microscope | FEI TALOS ARCTICA |
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Temperature | Min: 70.0 K / Max: 70.0 K |
Software | Name: Leginon (ver. 9.03) |
Image recording | Film or detector model: GATAN K3 (6k x 4k) / Average electron dose: 100.0 e/Å2 |
Electron beam | Acceleration voltage: 200 kV / Electron source: FIELD EMISSION GUN |
Electron optics | C2 aperture diameter: 50.0 µm / Calibrated defocus max: 3.5 µm / Calibrated defocus min: 0.7000000000000001 µm / Calibrated magnification: 36000 / Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Cs: 2.7 mm / Nominal defocus max: 3.5 µm / Nominal defocus min: 0.7000000000000001 µm / Nominal magnification: 36000 |
Sample stage | Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER / Cooling holder cryogen: NITROGEN |
Experimental equipment | Model: Talos Arctica / Image courtesy: FEI Company |