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- EMDB-38877: Cryo-EM structure of the overlapping di-nucleosome (closed form) -
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Open data
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Basic information
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Title | Cryo-EM structure of the overlapping di-nucleosome (closed form) | |||||||||||||||
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![]() | chromatin / GENE REGULATION / GENE REGULATION-DNA complex | |||||||||||||||
Function / homology | ![]() negative regulation of tumor necrosis factor-mediated signaling pathway / negative regulation of megakaryocyte differentiation / protein localization to CENP-A containing chromatin / Chromatin modifying enzymes / Replacement of protamines by nucleosomes in the male pronucleus / CENP-A containing nucleosome / Packaging Of Telomere Ends / Recognition and association of DNA glycosylase with site containing an affected purine / Cleavage of the damaged purine / Deposition of new CENPA-containing nucleosomes at the centromere ...negative regulation of tumor necrosis factor-mediated signaling pathway / negative regulation of megakaryocyte differentiation / protein localization to CENP-A containing chromatin / Chromatin modifying enzymes / Replacement of protamines by nucleosomes in the male pronucleus / CENP-A containing nucleosome / Packaging Of Telomere Ends / Recognition and association of DNA glycosylase with site containing an affected purine / Cleavage of the damaged purine / Deposition of new CENPA-containing nucleosomes at the centromere / Recognition and association of DNA glycosylase with site containing an affected pyrimidine / Cleavage of the damaged pyrimidine / Inhibition of DNA recombination at telomere / telomere organization / Meiotic synapsis / Interleukin-7 signaling / RNA Polymerase I Promoter Opening / Assembly of the ORC complex at the origin of replication / Regulation of endogenous retroelements by the Human Silencing Hub (HUSH) complex / SUMOylation of chromatin organization proteins / DNA methylation / Condensation of Prophase Chromosomes / Chromatin modifications during the maternal to zygotic transition (MZT) / SIRT1 negatively regulates rRNA expression / HCMV Late Events / innate immune response in mucosa / ERCC6 (CSB) and EHMT2 (G9a) positively regulate rRNA expression / PRC2 methylates histones and DNA / epigenetic regulation of gene expression / Regulation of endogenous retroelements by KRAB-ZFP proteins / Defective pyroptosis / Regulation of endogenous retroelements by Piwi-interacting RNAs (piRNAs) / HDACs deacetylate histones / RNA Polymerase I Promoter Escape / Nonhomologous End-Joining (NHEJ) / lipopolysaccharide binding / Transcriptional regulation by small RNAs / Formation of the beta-catenin:TCF transactivating complex / RUNX1 regulates genes involved in megakaryocyte differentiation and platelet function / Activated PKN1 stimulates transcription of AR (androgen receptor) regulated genes KLK2 and KLK3 / G2/M DNA damage checkpoint / HDMs demethylate histones / NoRC negatively regulates rRNA expression / B-WICH complex positively regulates rRNA expression / DNA Damage/Telomere Stress Induced Senescence / PKMTs methylate histone lysines / Meiotic recombination / Pre-NOTCH Transcription and Translation / Metalloprotease DUBs / RMTs methylate histone arginines / Activation of anterior HOX genes in hindbrain development during early embryogenesis / HCMV Early Events / Transcriptional regulation of granulopoiesis / heterochromatin formation / nucleosome assembly / antimicrobial humoral immune response mediated by antimicrobial peptide / structural constituent of chromatin / UCH proteinases / antibacterial humoral response / nucleosome / E3 ubiquitin ligases ubiquitinate target proteins / Recruitment and ATM-mediated phosphorylation of repair and signaling proteins at DNA double strand breaks / chromatin organization / RUNX1 regulates transcription of genes involved in differentiation of HSCs / HATs acetylate histones / Factors involved in megakaryocyte development and platelet production / Processing of DNA double-strand break ends / MLL4 and MLL3 complexes regulate expression of PPARG target genes in adipogenesis and hepatic steatosis / Senescence-Associated Secretory Phenotype (SASP) / gene expression / Oxidative Stress Induced Senescence / defense response to Gram-negative bacterium / Estrogen-dependent gene expression / killing of cells of another organism / chromosome, telomeric region / defense response to Gram-positive bacterium / Ub-specific processing proteases / cadherin binding / protein heterodimerization activity / Amyloid fiber formation / negative regulation of cell population proliferation / protein-containing complex / DNA binding / extracellular space / RNA binding / extracellular exosome / extracellular region / nucleoplasm / nucleus / membrane / cytosol Similarity search - Function | |||||||||||||||
Biological species | ![]() | |||||||||||||||
Method | single particle reconstruction / cryo EM / Resolution: 5.21 Å | |||||||||||||||
![]() | Tanaka H / Nishimura M / Takizawa Y / Nozawa K / Ehara H / Sekine S / Kurumizaka H | |||||||||||||||
Funding support | ![]()
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![]() | ![]() Title: Asymmetric fluctuation of overlapping dinucleosome studied by cryoelectron microscopy and small-angle X-ray scattering. Authors: Masahiro Shimizu / Hiroki Tanaka / Masahiro Nishimura / Nobuhiro Sato / Kayo Nozawa / Haruhiko Ehara / Shun-Ichi Sekine / Ken Morishima / Rintaro Inoue / Yoshimasa Takizawa / Hitoshi ...Authors: Masahiro Shimizu / Hiroki Tanaka / Masahiro Nishimura / Nobuhiro Sato / Kayo Nozawa / Haruhiko Ehara / Shun-Ichi Sekine / Ken Morishima / Rintaro Inoue / Yoshimasa Takizawa / Hitoshi Kurumizaka / Masaaki Sugiyama / ![]() Abstract: Nucleosome remodelers modify the local structure of chromatin to release the region from nucleosome-mediated transcriptional suppression. Overlapping dinucleosomes (OLDNs) are nucleoprotein complexes ...Nucleosome remodelers modify the local structure of chromatin to release the region from nucleosome-mediated transcriptional suppression. Overlapping dinucleosomes (OLDNs) are nucleoprotein complexes formed around transcription start sites as a result of remodeling, and they consist of two nucleosome moieties: a histone octamer wrapped by DNA (octasome) and a histone hexamer wrapped by DNA (hexasome). While OLDN formation alters chromatin accessibility to proteins, the structural mechanism behind this process is poorly understood. Thus, this study investigated the characteristics of structural fluctuations in OLDNs. First, multiple structures of the OLDN were visualized through cryoelectron microscopy (cryoEM), providing an overview of the tilting motion of the hexasome relative to the octasome at the near-atomistic resolution. Second, small-angle X-ray scattering (SAXS) revealed the presence of OLDN conformations with a larger radius of gyration than cryoEM structures. A more complete description of OLDN fluctuation was proposed by SAXS-based ensemble modeling, which included possible transient structures. The ensemble model supported the tilting motion of the OLDN outlined by the cryoEM models, further suggesting the presence of more diverse conformations. The amplitude of the relative tilting motion of the hexasome was larger, and the nanoscale fluctuation in distance between the octasome and hexasome was also proposed. The cryoEM models were found to be mapped in the energetically stable region of the conformational distribution of the ensemble. Exhaustive complex modeling using all conformations that appeared in the structural ensemble suggested that conformational and motional asymmetries of the OLDN result in asymmetries in the accessibility of OLDN-binding proteins. | |||||||||||||||
History |
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Structure visualization
Supplemental images |
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Downloads & links
-EMDB archive
Map data | ![]() | 2.1 MB | ![]() | |
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Header (meta data) | ![]() ![]() | 28.2 KB 28.2 KB | Display Display | ![]() |
Images | ![]() | 78.5 KB | ||
Filedesc metadata | ![]() | 6.7 KB | ||
Others | ![]() ![]() ![]() ![]() ![]() | 1.7 MB 1.6 MB 6.8 MB 14.3 MB 14.3 MB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Validation report
Summary document | ![]() | 708.4 KB | Display | ![]() |
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Full document | ![]() | 708 KB | Display | |
Data in XML | ![]() | 9.6 KB | Display | |
Data in CIF | ![]() | 11.1 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 8y3cMC ![]() 8y3dC ![]() 8y3eC ![]() 8y3fC M: atomic model generated by this map C: citing same article ( |
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Similar structure data | Similarity search - Function & homology ![]() |
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Links
EMDB pages | ![]() ![]() |
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Related items in Molecule of the Month |
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Map
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Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 1.47 Å | ||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
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-Supplemental data
-Additional map: Postprocessed map of the octasome unit
File | emd_38877_additional_1.map | ||||||||||||
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Annotation | Postprocessed map of the octasome unit | ||||||||||||
Projections & Slices |
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Density Histograms |
-Additional map: Postprocessed map of the hexasome unit
File | emd_38877_additional_2.map | ||||||||||||
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Annotation | Postprocessed map of the hexasome unit | ||||||||||||
Projections & Slices |
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Density Histograms |
-Additional map: Composite map
File | emd_38877_additional_3.map | ||||||||||||
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Annotation | Composite map | ||||||||||||
Projections & Slices |
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Density Histograms |
-Half map: Half map 2 of the main map
File | emd_38877_half_map_1.map | ||||||||||||
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Annotation | Half map 2 of the main map | ||||||||||||
Projections & Slices |
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Density Histograms |
-Half map: Half map 1 of the main map
File | emd_38877_half_map_2.map | ||||||||||||
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Annotation | Half map 1 of the main map | ||||||||||||
Projections & Slices |
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Density Histograms |
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Sample components
-Entire : Overlapping di-nucleosome
Entire | Name: Overlapping di-nucleosome |
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Components |
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-Supramolecule #1: Overlapping di-nucleosome
Supramolecule | Name: Overlapping di-nucleosome / type: complex / ID: 1 / Parent: 0 / Macromolecule list: all |
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Source (natural) | Organism: ![]() |
-Macromolecule #1: Histone H3.1
Macromolecule | Name: Histone H3.1 / type: protein_or_peptide / ID: 1 / Number of copies: 4 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 15.719445 KDa |
Recombinant expression | Organism: ![]() ![]() |
Sequence | String: GSHMARTKQT ARKSTGGKAP RKQLATKAAR KSAPATGGVK KPHRYRPGTV ALREIRRYQK STELLIRKLP FQRLVREIAQ DFKTDLRFQ SSAVMALQEA CEAYLVGLFE DTNLCAIHAK RVTIMPKDIQ LARRIRGERA UniProtKB: Histone H3.1 |
-Macromolecule #2: Histone H4
Macromolecule | Name: Histone H4 / type: protein_or_peptide / ID: 2 / Number of copies: 4 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 11.676703 KDa |
Recombinant expression | Organism: ![]() ![]() |
Sequence | String: GSHMSGRGKG GKGLGKGGAK RHRKVLRDNI QGITKPAIRR LARRGGVKRI SGLIYEETRG VLKVFLENVI RDAVTYTEHA KRKTVTAMD VVYALKRQGR TLYGFGG UniProtKB: Histone H4 |
-Macromolecule #3: Histone H2A type 1-B/E
Macromolecule | Name: Histone H2A type 1-B/E / type: protein_or_peptide / ID: 3 / Number of copies: 3 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 14.447825 KDa |
Recombinant expression | Organism: ![]() ![]() |
Sequence | String: GSHMSGRGKQ GGKARAKAKT RSSRAGLQFP VGRVHRLLRK GNYSERVGAG APVYLAAVLE YLTAEILELA GNAARDNKKT RIIPRHLQL AIRNDEELNK LLGRVTIAQG GVLPNIQAVL LPKKTESHHK AKGK UniProtKB: Histone H2A type 1-B/E |
-Macromolecule #4: Histone H2B type 1-J
Macromolecule | Name: Histone H2B type 1-J / type: protein_or_peptide / ID: 4 / Number of copies: 3 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 14.217516 KDa |
Recombinant expression | Organism: ![]() ![]() |
Sequence | String: GSHMPEPAKS APAPKKGSKK AVTKAQKKDG KKRKRSRKES YSIYVYKVLK QVHPDTGISS KAMGIMNSFV NDIFERIAGE ASRLAHYNK RSTITSREIQ TAVRLLLPGE LAKHAVSEGT KAVTKYTSAK UniProtKB: Histone H2B type 1-J |
-Macromolecule #5: DNA (250-MER)
Macromolecule | Name: DNA (250-MER) / type: dna / ID: 5 / Number of copies: 1 / Classification: DNA |
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Source (natural) | Organism: synthetic construct (others) |
Molecular weight | Theoretical: 77.664383 KDa |
Sequence | String: (DA)(DT)(DC)(DG)(DG)(DA)(DT)(DG)(DT)(DA) (DT)(DA)(DT)(DA)(DT)(DC)(DT)(DG)(DA)(DC) (DA)(DC)(DG)(DT)(DG)(DC)(DC)(DT)(DG) (DG)(DA)(DG)(DA)(DC)(DT)(DA)(DG)(DG)(DG) (DA) (DG)(DT)(DA)(DA)(DT)(DC) ...String: (DA)(DT)(DC)(DG)(DG)(DA)(DT)(DG)(DT)(DA) (DT)(DA)(DT)(DA)(DT)(DC)(DT)(DG)(DA)(DC) (DA)(DC)(DG)(DT)(DG)(DC)(DC)(DT)(DG) (DG)(DA)(DG)(DA)(DC)(DT)(DA)(DG)(DG)(DG) (DA) (DG)(DT)(DA)(DA)(DT)(DC)(DC)(DC) (DC)(DT)(DT)(DG)(DG)(DC)(DG)(DG)(DT)(DT) (DA)(DA) (DA)(DA)(DC)(DG)(DC)(DG)(DG) (DG)(DG)(DG)(DA)(DC)(DA)(DG)(DC)(DG)(DC) (DG)(DT)(DA) (DC)(DG)(DT)(DG)(DC)(DG) (DT)(DT)(DT)(DA)(DA)(DG)(DC)(DG)(DG)(DT) (DG)(DC)(DT)(DA) (DG)(DA)(DG)(DC)(DT) (DG)(DT)(DC)(DT)(DA)(DC)(DG)(DA)(DC)(DC) (DA)(DA)(DT)(DT)(DG) (DA)(DG)(DC)(DT) (DC)(DG)(DA)(DG)(DC)(DC)(DT)(DG)(DG)(DA) (DG)(DA)(DC)(DT)(DA)(DG) (DG)(DG)(DA) (DG)(DT)(DA)(DA)(DT)(DC)(DC)(DC)(DC)(DT) (DT)(DG)(DG)(DC)(DG)(DG)(DT) (DT)(DA) (DA)(DA)(DA)(DC)(DG)(DC)(DG)(DG)(DG)(DG) (DG)(DA)(DC)(DA)(DG)(DC)(DG)(DC) (DG) (DT)(DA)(DC)(DG)(DT)(DG)(DC)(DG)(DT)(DT) (DT)(DA)(DA)(DG)(DC)(DG)(DG)(DT)(DG) (DC)(DT)(DA)(DG)(DA)(DG)(DC)(DT)(DG)(DT) (DC)(DT)(DA)(DC)(DG)(DA)(DC)(DC)(DA)(DA) (DT)(DT)(DG)(DA)(DG)(DC)(DG)(DG)(DC) (DC)(DT)(DC)(DG)(DG)(DC)(DA)(DC)(DC)(DG) (DG) (DG)(DA)(DT)(DT)(DC)(DT)(DC)(DG) (DA)(DT) |
-Macromolecule #6: DNA (250-MER)
Macromolecule | Name: DNA (250-MER) / type: dna / ID: 6 / Number of copies: 1 / Classification: DNA |
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Source (natural) | Organism: synthetic construct (others) |
Molecular weight | Theoretical: 76.734789 KDa |
Sequence | String: (DA)(DT)(DC)(DG)(DA)(DG)(DA)(DA)(DT)(DC) (DC)(DC)(DG)(DG)(DT)(DG)(DC)(DC)(DG)(DA) (DG)(DG)(DC)(DC)(DG)(DC)(DT)(DC)(DA) (DA)(DT)(DT)(DG)(DG)(DT)(DC)(DG)(DT)(DA) (DG) (DA)(DC)(DA)(DG)(DC)(DT) ...String: (DA)(DT)(DC)(DG)(DA)(DG)(DA)(DA)(DT)(DC) (DC)(DC)(DG)(DG)(DT)(DG)(DC)(DC)(DG)(DA) (DG)(DG)(DC)(DC)(DG)(DC)(DT)(DC)(DA) (DA)(DT)(DT)(DG)(DG)(DT)(DC)(DG)(DT)(DA) (DG) (DA)(DC)(DA)(DG)(DC)(DT)(DC)(DT) (DA)(DG)(DC)(DA)(DC)(DC)(DG)(DC)(DT)(DT) (DA)(DA) (DA)(DC)(DG)(DC)(DA)(DC)(DG) (DT)(DA)(DC)(DG)(DC)(DG)(DC)(DT)(DG)(DT) (DC)(DC)(DC) (DC)(DC)(DG)(DC)(DG)(DT) (DT)(DT)(DT)(DA)(DA)(DC)(DC)(DG)(DC)(DC) (DA)(DA)(DG)(DG) (DG)(DG)(DA)(DT)(DT) (DA)(DC)(DT)(DC)(DC)(DC)(DT)(DA)(DG)(DT) (DC)(DT)(DC)(DC)(DA) (DG)(DG)(DC)(DT) (DC)(DG)(DA)(DG)(DC)(DT)(DC)(DA)(DA)(DT) (DT)(DG)(DG)(DT)(DC)(DG) (DT)(DA)(DG) (DA)(DC)(DA)(DG)(DC)(DT)(DC)(DT)(DA)(DG) (DC)(DA)(DC)(DC)(DG)(DC)(DT) (DT)(DA) (DA)(DA)(DC)(DG)(DC)(DA)(DC)(DG)(DT)(DA) (DC)(DG)(DC)(DG)(DC)(DT)(DG)(DT) (DC) (DC)(DC)(DC)(DC)(DG)(DC)(DG)(DT)(DT)(DT) (DT)(DA)(DA)(DC)(DC)(DG)(DC)(DC)(DA) (DA)(DG)(DG)(DG)(DG)(DA)(DT)(DT)(DA)(DC) (DT)(DC)(DC)(DC)(DT)(DA)(DG)(DT)(DC)(DT) (DC)(DC)(DA)(DG)(DG)(DC)(DA)(DC)(DG) (DT)(DG)(DT)(DC)(DA)(DG)(DA)(DT)(DA)(DT) (DA) (DT)(DA)(DC)(DA)(DT)(DC)(DC)(DG) (DA)(DT) |
-Experimental details
-Structure determination
Method | cryo EM |
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![]() | single particle reconstruction |
Aggregation state | particle |
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Sample preparation
Buffer | pH: 7.5 |
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Grid | Model: Quantifoil R1.2/1.3 / Material: COPPER / Pretreatment - Type: GLOW DISCHARGE |
Vitrification | Cryogen name: ETHANE / Instrument: FEI VITROBOT MARK IV |
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Electron microscopy
Microscope | FEI TECNAI ARCTICA |
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Image recording | Film or detector model: GATAN K2 SUMMIT (4k x 4k) / Average electron dose: 50.0 e/Å2 |
Electron beam | Acceleration voltage: 200 kV / Electron source: ![]() |
Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 3.5 µm / Nominal defocus min: 0.65 µm |
Experimental equipment | ![]() Model: Talos Arctica / Image courtesy: FEI Company |
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Image processing
Startup model | Type of model: NONE |
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Final reconstruction | Resolution.type: BY AUTHOR / Resolution: 5.21 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 149316 |
Initial angle assignment | Type: MAXIMUM LIKELIHOOD / Software - Name: RELION |
Final angle assignment | Type: MAXIMUM LIKELIHOOD / Software - Name: RELION |