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- PDB-8ihl: Overlapping tri-nucleosome -

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Basic information

Entry
Database: PDB / ID: 8ihl
TitleOverlapping tri-nucleosome
Components
  • (DNA (353-MER)) x 2
  • Histone H2A type 1-B/E
  • Histone H2B type 1-J
  • Histone H3.1Histone H3
  • Histone H4
KeywordsNUCLEAR PROTEIN/DNA / Nucleosome / Complex / NUCLEAR PROTEIN / NUCLEAR PROTEIN-DNA complex
Function / homology
Function and homology information


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 / epigenetic regulation of gene expression / Packaging Of Telomere Ends / Recognition and association of DNA glycosylase with site containing an affected purine / Cleavage of the damaged purine ...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 / epigenetic regulation of gene expression / 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 / Meiotic synapsis / telomere organization / RNA Polymerase I Promoter Opening / Interleukin-7 signaling / SUMOylation of chromatin organization proteins / Assembly of the ORC complex at the origin of replication / DNA methylation / Condensation of Prophase Chromosomes / HCMV Late Events / Chromatin modifications during the maternal to zygotic transition (MZT) / ERCC6 (CSB) and EHMT2 (G9a) positively regulate rRNA expression / SIRT1 negatively regulates rRNA expression / innate immune response in mucosa / PRC2 methylates histones and DNA / Defective pyroptosis / 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 / NoRC negatively regulates rRNA expression / G2/M DNA damage checkpoint / B-WICH complex positively regulates rRNA expression / HDMs demethylate histones / DNA Damage/Telomere Stress Induced Senescence / Metalloprotease DUBs / PKMTs methylate histone lysines / RMTs methylate histone arginines / Meiotic recombination / Pre-NOTCH Transcription and Translation / nucleosome assembly / Activation of anterior HOX genes in hindbrain development during early embryogenesis / HCMV Early Events / Transcriptional regulation of granulopoiesis / structural constituent of chromatin / UCH proteinases / nucleosome / antimicrobial humoral immune response mediated by antimicrobial peptide / E3 ubiquitin ligases ubiquitinate target proteins / Recruitment and ATM-mediated phosphorylation of repair and signaling proteins at DNA double strand breaks / gene expression / RUNX1 regulates transcription of genes involved in differentiation of HSCs / chromatin organization / Factors involved in megakaryocyte development and platelet production / Processing of DNA double-strand break ends / HATs acetylate histones / antibacterial humoral response / Senescence-Associated Secretory Phenotype (SASP) / Oxidative Stress Induced Senescence / killing of cells of another organism / Estrogen-dependent gene expression / defense response to Gram-negative bacterium / chromosome, telomeric region / Ub-specific processing proteases / defense response to Gram-positive bacterium / cadherin binding / Amyloid fiber formation / protein heterodimerization activity / negative regulation of cell population proliferation / protein-containing complex / DNA binding / extracellular space / RNA binding / extracellular exosome / extracellular region / nucleoplasm / membrane / nucleus / cytosol
Similarity search - Function
Histone H2B signature. / Histone H2B / Histone H2B / Histone H2A conserved site / Histone H2A signature. / Histone H2A, C-terminal domain / C-terminus of histone H2A / Histone H2A / Histone 2A / Histone H4, conserved site ...Histone H2B signature. / Histone H2B / Histone H2B / Histone H2A conserved site / Histone H2A signature. / Histone H2A, C-terminal domain / C-terminus of histone H2A / Histone H2A / Histone 2A / Histone H4, conserved site / Histone H4 signature. / Histone H4 / Histone H4 / CENP-T/Histone H4, histone fold / Centromere kinetochore component CENP-T histone fold / TATA box binding protein associated factor / TATA box binding protein associated factor (TAF), histone-like fold domain / Histone H3 signature 1. / Histone H3 signature 2. / Histone H3 / Histone H3/CENP-A / Histone H2A/H2B/H3 / Core histone H2A/H2B/H3/H4 / Histone-fold
Similarity search - Domain/homology
DNA / DNA (> 10) / DNA (> 100) / Histone H2A type 1-B/E / Histone H2B type 1-J / Histone H4 / Histone H3.1
Similarity search - Component
Biological speciesHomo sapiens (human)
synthetic construct (others)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 7.64 Å
AuthorsNishimura, M. / Fujii, T. / Tanaka, H. / Maehara, K. / Nozawa, K. / Takizawa, Y. / Ohkawa, Y. / Kurumizaka, H.
Funding support Japan, 8items
OrganizationGrant numberCountry
Japan Society for the Promotion of Science (JSPS)JP19K06522 Japan
Japan Society for the Promotion of Science (JSPS)JP18H05534 Japan
Japan Society for the Promotion of Science (JSPS)JP20H00449 Japan
Japan Agency for Medical Research and Development (AMED)JP22ama121009 Japan
Japan Science and TechnologyJPMJER1901 Japan
Japan Society for the Promotion of Science (JSPS)JP20K06599 Japan
Japan Society for the Promotion of Science (JSPS)JP21H05154 Japan
Japan Science and TechnologyJPMJPR18K9 Japan
CitationJournal: Commun Biol / Year: 2024
Title: Genome-wide mapping and cryo-EM structural analyses of the overlapping tri-nucleosome composed of hexasome-hexasome-octasome moieties.
Authors: Masahiro Nishimura / Takeru Fujii / Hiroki Tanaka / Kazumitsu Maehara / Ken Morishima / Masahiro Shimizu / Yuki Kobayashi / Kayo Nozawa / Yoshimasa Takizawa / Masaaki Sugiyama / Yasuyuki ...Authors: Masahiro Nishimura / Takeru Fujii / Hiroki Tanaka / Kazumitsu Maehara / Ken Morishima / Masahiro Shimizu / Yuki Kobayashi / Kayo Nozawa / Yoshimasa Takizawa / Masaaki Sugiyama / Yasuyuki Ohkawa / Hitoshi Kurumizaka /
Abstract: The nucleosome is a fundamental unit of chromatin in which about 150 base pairs of DNA are wrapped around a histone octamer. The overlapping di-nucleosome has been proposed as a product of chromatin ...The nucleosome is a fundamental unit of chromatin in which about 150 base pairs of DNA are wrapped around a histone octamer. The overlapping di-nucleosome has been proposed as a product of chromatin remodeling around the transcription start site, and previously found as a chromatin unit, in which about 250 base pairs of DNA continuously bind to the histone core composed of a hexamer and an octamer. In the present study, our genome-wide analysis of human cells suggests another higher nucleosome stacking structure, the overlapping tri-nucleosome, which wraps about 300-350 base-pairs of DNA in the region downstream of certain transcription start sites of actively transcribed genes. We determine the cryo-electron microscopy (cryo-EM) structure of the overlapping tri-nucleosome, in which three subnucleosome moieties, hexasome, hexasome, and octasome, are associated by short connecting DNA segments. Small angle X-ray scattering and coarse-grained molecular dynamics simulation analyses reveal that the cryo-EM structure of the overlapping tri-nucleosome may reflect its structure in solution. Our findings suggest that nucleosome stacking structures composed of hexasome and octasome moieties may be formed by nucleosome remodeling factors around transcription start sites for gene regulation.
History
DepositionFeb 23, 2023Deposition site: PDBJ / Processing site: PDBJ
Revision 1.0Jan 17, 2024Provider: repository / Type: Initial release
Revision 1.1Jan 24, 2024Group: Database references / Category: citation / citation_author
Item: _citation.page_first / _citation.page_last ..._citation.page_first / _citation.page_last / _citation.pdbx_database_id_PubMed / _citation.title / _citation_author.identifier_ORCID

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: Histone H3.1
B: Histone H4
C: Histone H2A type 1-B/E
D: Histone H2B type 1-J
E: Histone H3.1
F: Histone H4
G: Histone H2A type 1-B/E
H: Histone H2B type 1-J
I: DNA (353-MER)
J: DNA (353-MER)
K: Histone H3.1
L: Histone H4
M: Histone H3.1
N: Histone H4
O: Histone H2A type 1-B/E
P: Histone H2B type 1-J
Q: Histone H3.1
R: Histone H4
S: Histone H2A type 1-B/E
T: Histone H2B type 1-J
U: Histone H3.1
V: Histone H4


Theoretical massNumber of molelcules
Total (without water)497,08822
Polymers497,08822
Non-polymers00
Water0
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: native gel electrophoresis, Gel shift was observed in the native gel electrophoresis
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

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Protein , 4 types, 20 molecules AEKMQUBFLNRVCGOSDHPT

#1: Protein
Histone H3.1 / Histone H3 / Histone H3/a / Histone H3/b / Histone H3/c / Histone H3/d / Histone H3/f / Histone H3/h / Histone ...Histone H3/a / Histone H3/b / Histone H3/c / Histone H3/d / Histone H3/f / Histone H3/h / Histone H3/i / Histone H3/j / Histone H3/k / Histone H3/l


Mass: 15719.445 Da / Num. of mol.: 6
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: H3C1 / Production host: Escherichia coli BL21(DE3) (bacteria) / References: UniProt: P68431
#2: Protein
Histone H4 /


Mass: 11676.703 Da / Num. of mol.: 6
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: H4C1 / Production host: Escherichia coli BL21(DE3) (bacteria) / References: UniProt: P62805
#3: Protein
Histone H2A type 1-B/E / Histone H2A.2 / Histone H2A/a / Histone H2A/m


Mass: 14447.825 Da / Num. of mol.: 4
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: H2AC4, H2AFM, HIST1H2AB, H2AC8, H2AFA, HIST1H2AE / Production host: Escherichia coli BL21(DE3) (bacteria) / References: UniProt: P04908
#4: Protein
Histone H2B type 1-J / Histone H2B.1 / Histone H2B.r / H2B/r


Mass: 14217.516 Da / Num. of mol.: 4
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: H2BC11, H2BFR, HIST1H2BJ / Production host: Escherichia coli BL21(DE3) (bacteria) / References: UniProt: P06899

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DNA chain , 2 types, 2 molecules IJ

#5: DNA chain DNA (353-MER)


Mass: 108330.750 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) synthetic construct (others) / Production host: Escherichia coli DH5[alpha] (bacteria)
#6: DNA chain DNA (353-MER)


Mass: 109718.617 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) synthetic construct (others) / Production host: Escherichia coli DH5[alpha] (bacteria)

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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: Overlapping tri-nucleosome / Type: COMPLEX / Entity ID: all / Source: MULTIPLE SOURCES
Molecular weightValue: 0.511 MDa / Experimental value: NO
Source (natural)Organism: Homo sapiens (human)
Source (recombinant)Organism: Escherichia coli BL21(DE3) (bacteria)
Buffer solutionpH: 7
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
Specimen supportGrid 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: 289 K

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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 FIELDBright-field microscopy / Nominal defocus max: 2500 nm / Nominal defocus min: 1000 nm
Image recordingElectron dose: 55.1 e/Å2 / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Num. of grids imaged: 1 / Num. of real images: 6953

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Processing

EM software
IDNameVersionCategory
1RELION3.1particle selection
4RELION3.1CTF correction
10RELION3.1initial Euler assignment
11RELION3.1final Euler assignment
12RELION3.1classification
13RELION3.13D reconstruction
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
Particle selectionNum. of particles selected: 1718300
3D reconstructionResolution: 7.64 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 148082 / Num. of class averages: 1 / Symmetry type: POINT

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