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- PDB-8eqv: Cryo-EM structure of PRC2 in complex with the long isoform of AEBP2 -

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Basic information

Entry
Database: PDB / ID: 8eqv
TitleCryo-EM structure of PRC2 in complex with the long isoform of AEBP2
Components
  • Histone-binding protein RBBP4
  • Histone-lysine N-methyltransferase EZH2
  • Polycomb protein EED
  • Polycomb protein SUZ12
  • Zinc finger protein AEBP2
KeywordsGENE REGULATION / Polycomb repressive complex 2 Histone methyltransferase
Function / homology
Function and homology information


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 / regulatory ncRNA-mediated heterochromatin formation / sex chromatin / CAF-1 complex / negative regulation of keratinocyte differentiation ...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 / regulatory ncRNA-mediated heterochromatin formation / 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 / NuRD complex / Transcription of E2F targets under negative control by p107 (RBL1) and p130 (RBL2) in complex with HDAC1 / regulation of stem cell differentiation / 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 / pronucleus / RSC-type complex / 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 G1/S transition of mitotic cell cycle / negative regulation of gene expression, epigenetic / spinal cord development / G1 to G0 transition / Sin3-type complex / histone methyltransferase activity / positive regulation of stem cell population maintenance / G1/S-Specific Transcription / ATPase complex / oligodendrocyte differentiation / negative regulation of transcription elongation by RNA polymerase II / Transcriptional Regulation by E2F6 / 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 / 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 / keratinocyte differentiation / Deposition of new CENPA-containing nucleosomes at the centromere / protein localization to chromatin / enzyme activator activity / Regulation of TP53 Activity through Acetylation / heterochromatin formation / 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 / liver regeneration / stem cell differentiation / promoter-specific chromatin binding / hippocampus development / 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 / cellular response to hydrogen peroxide / Activation of anterior HOX genes in hindbrain development during early embryogenesis / HCMV Early Events / G1/S transition of mitotic cell cycle
Similarity search - Function
EZH2, SET domain / Polycomb protein, VEFS-Box / VEFS-Box of polycomb protein / : / Ezh2, MCSS domain / Histone-lysine N-methyltransferase EZH1/EZH2 / Polycomb repressive complex 2 subunit EZH1/EZH2, tri-helical domain / Pre-SET CXC domain / WD repeat binding protein EZH2 / Polycomb repressive complex 2 tri-helical domain ...EZH2, SET domain / Polycomb protein, VEFS-Box / VEFS-Box of polycomb protein / : / Ezh2, MCSS domain / Histone-lysine N-methyltransferase EZH1/EZH2 / Polycomb repressive complex 2 subunit EZH1/EZH2, tri-helical domain / Pre-SET CXC domain / WD repeat binding protein EZH2 / Polycomb repressive complex 2 tri-helical domain / CXC domain / Tesmin/TSO1-like CXC domain / Tesmin/TSO1-like CXC domain / Histone-lysine N-methyltransferase EZH1/2-like / CXC domain / CXC domain profile. / Histone-binding protein RBBP4, N-terminal / Histone-binding protein RBBP4 or subunit C of CAF1 complex / SET (Su(var)3-9, Enhancer-of-zeste, Trithorax) domain / SET domain superfamily / SET domain / SET domain profile. / SANT SWI3, ADA2, N-CoR and TFIIIB'' DNA-binding domains / SET domain / SANT/Myb domain / zinc finger / Zinc finger C2H2 type domain profile. / Zinc finger C2H2 superfamily / Zinc finger C2H2 type domain signature. / Zinc finger C2H2-type / G-protein beta WD-40 repeat / WD40 repeat, conserved site / Trp-Asp (WD) repeats signature. / Trp-Asp (WD) repeats profile. / Trp-Asp (WD) repeats circular profile. / WD domain, G-beta repeat / WD40 repeats / WD40 repeat / WD40-repeat-containing domain superfamily / WD40/YVTN repeat-like-containing domain superfamily
Similarity search - Domain/homology
Polycomb protein EED / Histone-binding protein RBBP4 / Polycomb protein SUZ12 / Histone-lysine N-methyltransferase EZH2 / Zinc finger protein AEBP2
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.64 Å
AuthorsBoudes, M. / Zhang, Q. / Flanigan, S.F. / Davidovich, C.
Funding support Australia, 7items
OrganizationGrant numberCountry
Australian Research Council (ARC)DP190103407 Australia
Other privateSylvia and Charles Viertel Senior Medical Research Fellowship Australia
National Health and Medical Research Council (NHMRC, Australia)APP1162921 Australia
National Health and Medical Research Council (NHMRC, Australia)APP1184637 Australia
National Health and Medical Research Council (NHMRC, Australia)APP2011767 Australia
Australian Research Council (ARC)DE180100219 Australia
National Health and Medical Research Council (NHMRC, Australia)APP1196365 Australia
CitationJournal: To Be Published
Title: To be updated
Authors: Boudes, M. / Zhang, Q. / Flanigan, S.F. / Davidovich, C.
History
DepositionOct 9, 2022Deposition site: RCSB / Processing site: RCSB
Revision 1.0Jul 31, 2024Provider: repository / Type: Initial release

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: Histone-binding protein RBBP4
C: Zinc finger protein AEBP2
E: Polycomb protein EED
D: Histone-lysine N-methyltransferase EZH2
B: Polycomb protein SUZ12


Theoretical massNumber of molelcules
Total (without water)321,1875
Polymers321,1875
Non-polymers00
Water00
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: gel filtration
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

#1: Protein Histone-binding protein RBBP4 / Chromatin assembly factor 1 subunit C / CAF-1 subunit C / Chromatin assembly factor I p48 subunit / ...Chromatin assembly factor 1 subunit C / CAF-1 subunit C / Chromatin assembly factor I p48 subunit / CAF-I p48 / Nucleosome-remodeling factor subunit RBAP48 / Retinoblastoma-binding protein 4 / RBBP-4 / Retinoblastoma-binding protein p48


Mass: 47709.527 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: RBBP4, RBAP48 / Production host: Trichoplusia ni (cabbage looper) / References: UniProt: Q09028
#2: Protein Zinc finger protein AEBP2 / Adipocyte enhancer-binding protein 2 / AE-binding protein 2


Mass: 54535.496 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: AEBP2 / Production host: Trichoplusia ni (cabbage looper) / References: UniProt: Q6ZN18
#3: Protein Polycomb protein EED / hEED / Embryonic ectoderm development protein / WD protein associating with integrin cytoplasmic ...hEED / Embryonic ectoderm development protein / WD protein associating with integrin cytoplasmic tails 1 / WAIT-1


Mass: 50267.691 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: EED / Production host: Trichoplusia ni (cabbage looper) / References: UniProt: O75530
#4: Protein Histone-lysine N-methyltransferase EZH2 / ENX-1 / Enhancer of zeste homolog 2 / Lysine N-methyltransferase 6


Mass: 85492.297 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: EZH2, KMT6 / Production host: Trichoplusia ni (cabbage looper)
References: UniProt: Q15910, [histone H3]-lysine27 N-trimethyltransferase
#5: Protein Polycomb protein SUZ12 / Chromatin precipitated E2F target 9 protein / ChET 9 protein / Joined to JAZF1 protein / Suppressor ...Chromatin precipitated E2F target 9 protein / ChET 9 protein / Joined to JAZF1 protein / Suppressor of zeste 12 protein homolog


Mass: 83181.922 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: SUZ12, CHET9, JJAZ1, KIAA0160 / Production host: Trichoplusia ni (cabbage looper) / References: UniProt: Q15022

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Experimental details

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Experiment

ExperimentMethod: ELECTRON MICROSCOPY
EM experimentAggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction

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Sample preparation

ComponentName: Ternary complex of PRC2 with long isoform of AEBP2 / Type: COMPLEX / Entity ID: all / Source: RECOMBINANT
Molecular weightExperimental value: NO
Source (natural)Organism: Homo sapiens (human)
Source (recombinant)Organism: Trichoplusia ni (cabbage looper)
Buffer solutionpH: 7.5
Details: 200 mM NaCl, 20 mM HEPES pH 7.5, 1 mM TCEP, 0.01% NP-40
Buffer component
IDConc.NameFormulaBuffer-ID
1200 mMsodium chlorideNaCl1
220 mMHEPES1
31 mMTCEP1
40.01 %NP-401
SpecimenConc.: 2.4 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
Details: Prior to cryo-EM sample preparation, complexes were PEGylated at 0.9 mg/mL with 5 mM MS(PEG)4 Methyl-PEG-NHS-Ester (ThermoFisher Scientific) for 2 h at 4oC.
Specimen supportDetails: 0.24 mBar, 120 s, 10 mAmp / Grid material: COPPER / Grid mesh size: 200 divisions/in. / Grid type: Quantifoil R1.2/1.3
VitrificationInstrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 277 K / Details: Blotting 3 seconds

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: FEI TITAN KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD / Nominal magnification: 105000 X / Nominal defocus max: 2500 nm / Nominal defocus min: 500 nm
Specimen holderCryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER
Image recordingElectron dose: 60 e/Å2 / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k)
EM imaging opticsEnergyfilter name: GIF Quantum ER / Energyfilter slit width: 10 eV

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Processing

SoftwareName: PHENIX / Version: 1.20.1_4487: / Classification: refinement
EM software
IDNameVersionCategoryDetails
1crYOLO1.7.6particle selection
4CTFFIND4.1CTF correction
10cryoSPARC3.3.2initial Euler assignmentab initio
11cryoSPARC3.3.2final Euler assignmentnon-uniform refinement
13cryoSPARC3.3.23D reconstructionnon-uniform refinement
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
Particle selectionNum. of particles selected: 847067
SymmetryPoint symmetry: C1 (asymmetric)
3D reconstructionResolution: 3.64 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 45024 / Num. of class averages: 1 / Symmetry type: POINT
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.00314306
ELECTRON MICROSCOPYf_angle_d0.64919378
ELECTRON MICROSCOPYf_dihedral_angle_d4.8691879
ELECTRON MICROSCOPYf_chiral_restr0.0432121
ELECTRON MICROSCOPYf_plane_restr0.0052499

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