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Open data
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Basic information
Entry | Database: PDB / ID: 8fyh | |||||||||
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Title | G4 RNA-mediated PRC2 dimer | |||||||||
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![]() | GENE REGULATION / PRC2 / G-quadruplex RNA / RNP complex / chromatin modifier | |||||||||
Function / homology | ![]() regulation of kidney development / hepatocyte homeostasis / cellular response to trichostatin A / regulation of gliogenesis / [histone H3]-lysine27 N-trimethyltransferase / negative regulation of striated muscle cell differentiation / sex chromatin / CAF-1 complex / negative regulation of keratinocyte differentiation / histone H3K27 trimethyltransferase activity ...regulation of kidney development / hepatocyte homeostasis / cellular response to trichostatin A / regulation of gliogenesis / [histone H3]-lysine27 N-trimethyltransferase / negative regulation of striated muscle cell differentiation / sex chromatin / CAF-1 complex / negative regulation of keratinocyte differentiation / histone H3K27 trimethyltransferase activity / negative regulation of retinoic acid receptor signaling pathway / random inactivation of X chromosome / primary miRNA binding / skeletal muscle satellite cell maintenance involved in skeletal muscle regeneration / response to tetrachloromethane / cerebellar cortex development / facultative heterochromatin formation / histone H3K27 methyltransferase activity / positive regulation of cell cycle G1/S phase transition / NURF complex / regulation of cell fate specification / negative regulation of stem cell population maintenance / DNA replication-dependent chromatin assembly / chromatin silencing complex / Transcription of E2F targets under negative control by p107 (RBL1) and p130 (RBL2) in complex with HDAC1 / regulation of stem cell differentiation / NuRD complex / ESC/E(Z) complex / protein-lysine N-methyltransferase activity / negative regulation of stem cell differentiation / Transcription of E2F targets under negative control by DREAM complex / RSC-type complex / pronucleus / cardiac muscle hypertrophy in response to stress / Polo-like kinase mediated events / synaptic transmission, GABAergic / lncRNA binding / positive regulation of dendrite development / histone H3 methyltransferase activity / negative regulation of gene expression, epigenetic / negative regulation of G1/S transition of mitotic cell cycle / spinal cord development / G1 to G0 transition / Sin3-type complex / positive regulation of stem cell population maintenance / histone methyltransferase activity / G1/S-Specific Transcription / ATPase complex / oligodendrocyte differentiation / Transcriptional Regulation by E2F6 / negative regulation of transcription elongation by RNA polymerase II / RNA Polymerase I Transcription Initiation / negative regulation of cell differentiation / histone deacetylase complex / G0 and Early G1 / subtelomeric heterochromatin formation / negative regulation of cytokine production involved in inflammatory response / RNA polymerase II core promoter sequence-specific DNA binding / pericentric heterochromatin / ribonucleoprotein complex binding / heterochromatin formation / positive regulation of epithelial to mesenchymal transition / Cyclin E associated events during G1/S transition / Cyclin A:Cdk2-associated events at S phase entry / nucleosome binding / Deposition of new CENPA-containing nucleosomes at the centromere / keratinocyte differentiation / protein localization to chromatin / enzyme activator activity / Regulation of TP53 Activity through Acetylation / methylated histone binding / SUMOylation of chromatin organization proteins / negative regulation of cell migration / B cell differentiation / transcription corepressor binding / ERCC6 (CSB) and EHMT2 (G9a) positively regulate rRNA expression / positive regulation of GTPase activity / PRC2 methylates histones and DNA / Regulation of PTEN gene transcription / Defective pyroptosis / HDACs deacetylate histones / stem cell differentiation / liver regeneration / hippocampus development / promoter-specific chromatin binding / transcription coregulator activity / negative regulation of transforming growth factor beta receptor signaling pathway / positive regulation of MAP kinase activity / protein modification process / positive regulation of protein serine/threonine kinase activity / regulation of circadian rhythm / brain development / chromatin DNA binding / PKMTs methylate histone lysines / histone deacetylase binding / Activation of anterior HOX genes in hindbrain development during early embryogenesis / cellular response to hydrogen peroxide / HCMV Early Events / G1/S transition of mitotic cell cycle / transcription corepressor activity Similarity search - Function | |||||||||
Biological species | ![]() | |||||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.4 Å | |||||||||
![]() | Song, J. / Kasinath, V. | |||||||||
Funding support | ![]()
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![]() | ![]() Title: Structural basis for inactivation of PRC2 by G-quadruplex RNA. Authors: Jiarui Song / Anne R Gooding / Wayne O Hemphill / Brittney D Love / Anne Robertson / Liqi Yao / Leonard I Zon / Trista E North / Vignesh Kasinath / Thomas R Cech / ![]() Abstract: Polycomb repressive complex 2 (PRC2) silences genes through trimethylation of histone H3K27. PRC2 associates with numerous precursor messenger RNAs (pre-mRNAs) and long noncoding RNAs (lncRNAs) with ...Polycomb repressive complex 2 (PRC2) silences genes through trimethylation of histone H3K27. PRC2 associates with numerous precursor messenger RNAs (pre-mRNAs) and long noncoding RNAs (lncRNAs) with a binding preference for G-quadruplex RNA. In this work, we present a 3.3-Å-resolution cryo-electron microscopy structure of PRC2 bound to a G-quadruplex RNA. Notably, RNA mediates the dimerization of PRC2 by binding both protomers and inducing a protein interface composed of two copies of the catalytic subunit EZH2, thereby blocking nucleosome DNA interaction and histone H3 tail accessibility. Furthermore, an RNA-binding loop of EZH2 facilitates the handoff between RNA and DNA, another activity implicated in PRC2 regulation by RNA. We identified a gain-of-function mutation in this loop that activates PRC2 in zebrafish. Our results reveal mechanisms for RNA-mediated regulation of a chromatin-modifying enzyme. | |||||||||
History |
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Structure visualization
Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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Download
PDBx/mmCIF format | ![]() | 721.5 KB | Display | ![]() |
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PDB format | ![]() | 512.4 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Summary document | ![]() | 1.3 MB | Display | ![]() |
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Full document | ![]() | 1.4 MB | Display | |
Data in XML | ![]() | 103.4 KB | Display | |
Data in CIF | ![]() | 161.4 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 29578MC M: map data used to model this data C: citing same article ( |
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Similar structure data | Similarity search - Function & homology ![]() |
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Links
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Assembly
Deposited unit | ![]()
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Components
-Polycomb protein ... , 2 types, 4 molecules BHCI
#1: Protein | Mass: 83181.922 Da / Num. of mol.: 2 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() #2: Protein | Mass: 50267.691 Da / Num. of mol.: 2 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() |
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-Protein , 4 types, 8 molecules DJAGEKFL
#3: Protein | Mass: 47709.527 Da / Num. of mol.: 2 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() #4: Protein | Mass: 86149.055 Da / Num. of mol.: 2 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() References: UniProt: Q15910, [histone H3]-lysine27 N-trimethyltransferase #5: Protein | Mass: 138406.219 Da / Num. of mol.: 2 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() #6: Protein | Mass: 54535.496 Da / Num. of mol.: 2 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() |
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-RNA chain / Non-polymers , 2 types, 15 molecules M![](data/chem/img/ZN.gif)
![](data/chem/img/ZN.gif)
#7: RNA chain | Mass: 7955.823 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) ![]() |
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#8: Chemical | ChemComp-ZN / |
-Details
Has ligand of interest | N |
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-Experimental details
-Experiment
Experiment | Method: ELECTRON MICROSCOPY |
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EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction |
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Sample preparation
Component | Name: G4 RNA-mediated dimer of polycomb repressive complex 2 Type: COMPLEX / Entity ID: #1-#7 / Source: MULTIPLE SOURCES | ||||||||||||||||||||||||||||||
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Molecular weight | Value: 0.8 MDa / Experimental value: YES | ||||||||||||||||||||||||||||||
Source (natural) | Organism: ![]() | ||||||||||||||||||||||||||||||
Source (recombinant) | Organism: ![]() | ||||||||||||||||||||||||||||||
Buffer solution | pH: 7.9 Details: RNP complex buffer (25 mM HEPES pH 7.9, 50 mM KCl, 2 mM MgCl2, 10% glycerol, and 1mM TCEP) EM preparation buffer I (25 mM HEPES pH 7.9, 50 mM KCl, 2.5% glycerol, and 1mM TCEP) EM preparation ...Details: RNP complex buffer (25 mM HEPES pH 7.9, 50 mM KCl, 2 mM MgCl2, 10% glycerol, and 1mM TCEP) EM preparation buffer I (25 mM HEPES pH 7.9, 50 mM KCl, 2.5% glycerol, and 1mM TCEP) EM preparation buffer II (25 mM HEPES pH 7.9, 50 mM KCl, 2.5% glycerol, 0.01%NP-40, and 1mM TCEP). | ||||||||||||||||||||||||||||||
Buffer component |
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Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES Details: We used streptavidin-affinity grid preparation method with biotin-labeled RNA at 100 nM concentration. PRC2 was applied in excess at 600 nM. | ||||||||||||||||||||||||||||||
Specimen support | Grid material: GOLD / Grid mesh size: 300 divisions/in. / Grid type: Quantifoil R2/1 | ||||||||||||||||||||||||||||||
Vitrification | Instrument: LEICA PLUNGER / Cryogen name: ETHANE / Humidity: 90 % / Chamber temperature: 281 K / Details: 3s of single side blotting |
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Electron microscopy imaging
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Microscopy | Model: FEI TITAN KRIOS |
Electron gun | Electron source: ![]() |
Electron lens | Mode: BRIGHT FIELD / Nominal magnification: 81000 X / Nominal defocus max: 2000 nm / Nominal defocus min: 600 nm / Cs: 0.01 mm |
Specimen holder | Cryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER |
Image recording | Electron dose: 60 e/Å2 / Film or detector model: GATAN K3 (6k x 4k) / Num. of grids imaged: 1 / Num. of real images: 18632 / Details: 60 frames per movie |
EM imaging optics | Energyfilter slit width: 20 eV |
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Processing
Software | Name: PHENIX / Version: 1.20.1_4487: / Classification: refinement | ||||||||||||||||||||||||||||||||||||||||
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EM software |
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CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||||||||||||||||||
Particle selection | Num. of particles selected: 3885383 | ||||||||||||||||||||||||||||||||||||||||
3D reconstruction | Resolution: 3.4 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 217196 / Symmetry type: POINT |