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Yorodumi- EMDB-31191: Human Mediator (deletion of MED1-IDR) in a Tail-extended conformation -
+Open data
-Basic information
Entry | Database: EMDB / ID: EMD-31191 | |||||||||
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Title | Human Mediator (deletion of MED1-IDR) in a Tail-extended conformation | |||||||||
Map data | ||||||||||
Sample |
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Keywords | Mediator complex / TRANSCRIPTION | |||||||||
Function / homology | Function and homology information positive regulation of mediator complex assembly / positive regulation of T cell extravasation / negative regulation of smooth muscle cell differentiation / enucleate erythrocyte development / positive regulation of type II interferon-mediated signaling pathway / regulation of RNA biosynthetic process / androgen biosynthetic process / positive regulation of G0 to G1 transition / mammary gland branching involved in thelarche / retinal pigment epithelium development ...positive regulation of mediator complex assembly / positive regulation of T cell extravasation / negative regulation of smooth muscle cell differentiation / enucleate erythrocyte development / positive regulation of type II interferon-mediated signaling pathway / regulation of RNA biosynthetic process / androgen biosynthetic process / positive regulation of G0 to G1 transition / mammary gland branching involved in thelarche / retinal pigment epithelium development / G0 to G1 transition / thyroid hormone receptor signaling pathway / core mediator complex / regulation of vitamin D receptor signaling pathway / ventricular trabecula myocardium morphogenesis / thyroid hormone generation / mediator complex / nuclear retinoic acid receptor binding / positive regulation of keratinocyte differentiation / Generic Transcription Pathway / embryonic heart tube development / cellular response to thyroid hormone stimulus / embryonic hindlimb morphogenesis / peroxisome proliferator activated receptor binding / positive regulation of hepatocyte proliferation / positive regulation of chromatin binding / nuclear vitamin D receptor binding / limb development / lens development in camera-type eye / nuclear thyroid hormone receptor binding / positive regulation of intracellular estrogen receptor signaling pathway / embryonic hemopoiesis / megakaryocyte development / cellular response to steroid hormone stimulus / cellular response to hepatocyte growth factor stimulus / histone acetyltransferase binding / termination of RNA polymerase II transcription / cortical actin cytoskeleton / RSV-host interactions / epithelial cell proliferation involved in mammary gland duct elongation / LBD domain binding / fat cell differentiation / skeletal muscle cell differentiation / mammary gland branching involved in pregnancy / monocyte differentiation / somatic stem cell population maintenance / blastocyst development / general transcription initiation factor binding / negative regulation of keratinocyte proliferation / negative regulation of neuron differentiation / hematopoietic stem cell differentiation / embryonic placenta development / positive regulation of transcription initiation by RNA polymerase II / animal organ regeneration / erythrocyte development / nuclear retinoid X receptor binding / nuclear receptor-mediated steroid hormone signaling pathway / ubiquitin ligase complex / negative regulation of fibroblast proliferation / RNA polymerase II preinitiation complex assembly / keratinocyte differentiation / RORA activates gene expression / peroxisome proliferator activated receptor signaling pathway / cellular response to epidermal growth factor stimulus / lactation / Regulation of lipid metabolism by PPARalpha / positive regulation of erythrocyte differentiation / liver development / BMAL1:CLOCK,NPAS2 activates circadian gene expression / Activation of gene expression by SREBF (SREBP) / nuclear receptor coactivator activity / nuclear receptor binding / nuclear estrogen receptor binding / promoter-specific chromatin binding / transcription initiation at RNA polymerase II promoter / positive regulation of transcription elongation by RNA polymerase II / transcription coregulator activity / Heme signaling / brain development / mRNA transcription by RNA polymerase II / Transcriptional activation of mitochondrial biogenesis / cell morphogenesis / PPARA activates gene expression / Cytoprotection by HMOX1 / chromatin DNA binding / transcription coactivator binding / Transcriptional regulation of white adipocyte differentiation / Nuclear Receptor transcription pathway / DNA-directed 5'-3' RNA polymerase activity / protein import into nucleus / transcription corepressor activity / ubiquitin protein ligase activity / Circadian Clock / actin binding / angiogenesis / DNA-binding transcription factor binding / Estrogen-dependent gene expression / transcription regulator complex / transcription by RNA polymerase II / transcription coactivator activity Similarity search - Function | |||||||||
Biological species | Homo sapiens (human) | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 3.5 Å | |||||||||
Authors | Yin X / Li J | |||||||||
Citation | Journal: Science / Year: 2021 Title: Structures of the human Mediator and Mediator-bound preinitiation complex. Authors: Xizi Chen / Xiaotong Yin / Jiabei Li / Zihan Wu / Yilun Qi / Xinxin Wang / Weida Liu / Yanhui Xu / Abstract: The 1.3-megadalton transcription factor IID (TFIID) is required for preinitiation complex (PIC) assembly and RNA polymerase II (Pol II)-mediated transcription initiation on almost all genes. The 26- ...The 1.3-megadalton transcription factor IID (TFIID) is required for preinitiation complex (PIC) assembly and RNA polymerase II (Pol II)-mediated transcription initiation on almost all genes. The 26-subunit Mediator stimulates transcription and cyclin-dependent kinase 7 (CDK7)-mediated phosphorylation of the Pol II C-terminal domain (CTD). We determined the structures of human Mediator in the Tail module-extended (at near-atomic resolution) and Tail-bent conformations and structures of TFIID-based PIC-Mediator (76 polypeptides, ~4.1 megadaltons) in four distinct conformations. PIC-Mediator assembly induces concerted reorganization (Head-tilting and Middle-down) of Mediator and creates a Head-Middle sandwich, which stabilizes two CTD segments and brings CTD to CDK7 for phosphorylation; this suggests a CTD-gating mechanism favorable for phosphorylation. The TFIID-based PIC architecture modulates Mediator organization and TFIIH stabilization, underscoring the importance of TFIID in orchestrating PIC-Mediator assembly. | |||||||||
History |
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-Structure visualization
Movie |
Movie viewer |
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Structure viewer | EM map: SurfViewMolmilJmol/JSmol |
Supplemental images |
-Downloads & links
-EMDB archive
Map data | emd_31191.map.gz | 33.4 MB | EMDB map data format | |
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Header (meta data) | emd-31191-v30.xml emd-31191.xml | 49.9 KB 49.9 KB | Display Display | EMDB header |
Images | emd_31191.png | 109.3 KB | ||
Filedesc metadata | emd-31191.cif.gz | 14.4 KB | ||
Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-31191 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-31191 | HTTPS FTP |
-Validation report
Summary document | emd_31191_validation.pdf.gz | 361.4 KB | Display | EMDB validaton report |
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Full document | emd_31191_full_validation.pdf.gz | 360.9 KB | Display | |
Data in XML | emd_31191_validation.xml.gz | 7.8 KB | Display | |
Data in CIF | emd_31191_validation.cif.gz | 9.1 KB | Display | |
Arichive directory | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-31191 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-31191 | HTTPS FTP |
-Related structure data
Related structure data | 7emfMC 7enaC 7encC 7enjC M: atomic model generated by this map C: citing same article (ref.) |
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Similar structure data |
-Links
EMDB pages | EMDB (EBI/PDBe) / EMDataResource |
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Related items in Molecule of the Month |
-Map
File | Download / File: emd_31191.map.gz / Format: CCP4 / Size: 512 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 1.054 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
CCP4 map header:
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-Supplemental data
-Sample components
+Entire : Structure of the human Mediator complex
+Supramolecule #1: Structure of the human Mediator complex
+Macromolecule #1: Mediator of RNA polymerase II transcription subunit 1
+Macromolecule #2: Unknown Chain (poly A)
+Macromolecule #3: Mediator of RNA polymerase II transcription subunit 4
+Macromolecule #4: Mediator of RNA polymerase II transcription subunit 6
+Macromolecule #5: Mediator of RNA polymerase II transcription subunit 7
+Macromolecule #6: Isoform 2 of Mediator of RNA polymerase II transcription subunit 8
+Macromolecule #7: Mediator of RNA polymerase II transcription subunit 9
+Macromolecule #8: Mediator of RNA polymerase II transcription subunit 10
+Macromolecule #9: Mediator of RNA polymerase II transcription subunit 11
+Macromolecule #10: Mediator of RNA polymerase II transcription subunit 14
+Macromolecule #11: Mediator of RNA polymerase II transcription subunit 15
+Macromolecule #12: Isoform 2 of Mediator of RNA polymerase II transcription subunit 16
+Macromolecule #13: Mediator of RNA polymerase II transcription subunit 17
+Macromolecule #14: Mediator of RNA polymerase II transcription subunit 18
+Macromolecule #15: Mediator of RNA polymerase II transcription subunit 19
+Macromolecule #16: Mediator of RNA polymerase II transcription subunit 20
+Macromolecule #17: Mediator of RNA polymerase II transcription subunit 21
+Macromolecule #18: Mediator of RNA polymerase II transcription subunit 22
+Macromolecule #19: Mediator of RNA polymerase II transcription subunit 23
+Macromolecule #20: Mediator of RNA polymerase II transcription subunit 24
+Macromolecule #21: Mediator of RNA polymerase II transcription subunit 25
+Macromolecule #22: Mediator of RNA polymerase II transcription subunit 26
+Macromolecule #23: Mediator of RNA polymerase II transcription subunit 27
+Macromolecule #24: Mediator of RNA polymerase II transcription subunit 28
+Macromolecule #25: Mediator of RNA polymerase II transcription subunit 29
+Macromolecule #26: Mediator of RNA polymerase II transcription subunit 30
+Macromolecule #27: Mediator of RNA polymerase II transcription subunit 31
+Macromolecule #28: ZINC ION
-Experimental details
-Structure determination
Method | cryo EM |
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Processing | single particle reconstruction |
Aggregation state | particle |
-Sample preparation
Buffer | pH: 8 |
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Grid | Model: Quantifoil R1.2/1.3 / Material: GOLD / Mesh: 300 / Support film - Material: CARBON / Support film - topology: HOLEY / Pretreatment - Type: PLASMA CLEANING |
Vitrification | Cryogen name: ETHANE / Chamber humidity: 100 % / Instrument: FEI VITROBOT MARK IV |
-Electron microscopy
Microscope | FEI TITAN KRIOS |
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Specialist optics | Energy filter - Slit width: 20 eV |
Image recording | Film or detector model: GATAN K2 SUMMIT (4k x 4k) / Detector mode: SUPER-RESOLUTION / Average electron dose: 50.0 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN |
Electron optics | C2 aperture diameter: 70.0 µm / Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Cs: 2.7 mm |
Sample stage | Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER / Cooling holder cryogen: NITROGEN |
Experimental equipment | Model: Titan Krios / Image courtesy: FEI Company |
-Image processing
Startup model | Type of model: OTHER |
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Final reconstruction | Resolution.type: BY AUTHOR / Resolution: 3.5 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 95433 |
Initial angle assignment | Type: OTHER |
Final angle assignment | Type: MAXIMUM LIKELIHOOD |
-Atomic model buiding 1
Refinement | Space: REAL / Protocol: AB INITIO MODEL |
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Output model | PDB-7emf: |