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- PDB-8hxz: Cryo-EM structure of Eaf3 CHD in complex with nucleosome -

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Basic information

Entry
Database: PDB / ID: 8hxz
TitleCryo-EM structure of Eaf3 CHD in complex with nucleosome
Components
  • (DNA (352-MER)) x 2
  • Chromatin modification-related protein EAF3
  • Histone H2A
  • Histone H2B
  • Histone H3
  • Histone H4
KeywordsGENE REGULATION / Histone modification binding domain / Histone deacetylase complex
Function / homology
Function and homology information


histone acetyltransferase complex / structural constituent of chromatin / nucleosome / chromatin remodeling / protein heterodimerization activity / DNA repair / regulation of DNA-templated transcription / DNA binding / nucleus
Similarity search - Function
MRG / MRG domain / MRG, C-terminal domain superfamily / MRG / MRG domain profile. / RNA binding activity-knot of a chromodomain / RNA binding activity-knot of a chromodomain / Chromo/chromo shadow domain / Chromatin organization modifier domain / Chromo-like domain superfamily ...MRG / MRG domain / MRG, C-terminal domain superfamily / MRG / MRG domain profile. / RNA binding activity-knot of a chromodomain / RNA binding activity-knot of a chromodomain / Chromo/chromo shadow domain / Chromatin organization modifier domain / Chromo-like domain superfamily / 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 H3 / Chromatin modification-related protein EAF3 / Histone H2B / Histone H4 / Histone H2A
Similarity search - Component
Biological speciesXenopus laevis (African clawed frog)
Saccharomyces cerevisiae (brewer's yeast)
synthetic construct (others)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.4 Å
AuthorsCui, H. / Wang, H.
Funding support China, 1items
OrganizationGrant numberCountry
National Natural Science Foundation of China (NSFC) China
CitationJournal: Nat Struct Mol Biol / Year: 2023
Title: Structure of histone deacetylase complex Rpd3S bound to nucleosome.
Authors: Wulong Li / Hengjun Cui / Zhimin Lu / Haibo Wang /
Abstract: Crosstalk between histone modifications represents a fundamental epigenetic mechanism in gene regulation. During the transcription elongation process, the histone deacetylase complex Rpd3S is ...Crosstalk between histone modifications represents a fundamental epigenetic mechanism in gene regulation. During the transcription elongation process, the histone deacetylase complex Rpd3S is recruited to H3K36-methylated nucleosomes to suppress cryptic transcription initiation. However, how subunits of Rpd3S are assembled and coordinated to recognize nucleosomal substrates and exert their deacetylation function remains unclear. Here we report the structure of Saccharomyces cerevisiae Rpd3S deacetylase bound to H3K36me3-modified nucleosome at 3.1 Å resolution. It shows that Sin3 and Rco1 subunits orchestrate the assembly of the complex and mediate its contact with nucleosome at multiple sites, with the Sin3-DNA interface as a pivotal anchor. The PHD1 domain of Rco1 recognizes the unmodified H3K4 and places the following H3 tail toward the active site of Rpd3, while the chromodomain of Eaf3 subunit recognizes the H3K36me3 mark and contacts both nucleosomal and linker DNA. The second copy of Eaf3-Rco1 is involved in neighboring nucleosome binding. Our work unravels the structural basis of chromatin targeting and deacetylation by the Rpd3S complex.
History
DepositionJan 5, 2023Deposition site: PDBJ / Processing site: PDBC
Revision 1.0Sep 27, 2023Provider: repository / Type: Initial release
Revision 1.1Oct 11, 2023Group: Database references / Category: citation / citation_author
Item: _citation.journal_abbrev / _citation.journal_id_ASTM ..._citation.journal_abbrev / _citation.journal_id_ASTM / _citation.journal_id_CSD / _citation.journal_id_ISSN
Revision 1.2Oct 18, 2023Group: Database references / Category: citation / citation_author
Item: _citation.pdbx_database_id_PubMed / _citation.title / _citation_author.identifier_ORCID
Revision 1.3Nov 15, 2023Group: Data collection / Category: chem_comp_atom / chem_comp_bond / Item: _chem_comp_atom.atom_id / _chem_comp_bond.atom_id_2
Revision 1.4Dec 27, 2023Group: Database references / Category: citation
Item: _citation.journal_volume / _citation.page_first / _citation.page_last

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: Histone H3
B: Histone H4
C: Histone H2A
D: Histone H2B
E: Histone H3
F: Histone H4
G: Histone H2A
H: Histone H2B
I: DNA (352-MER)
J: DNA (352-MER)
M: Chromatin modification-related protein EAF3


Theoretical massNumber of molelcules
Total (without water)370,88311
Polymers370,88311
Non-polymers00
Water0
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: electron microscopy
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

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Protein , 5 types, 9 molecules AEBFCGDHM

#1: Protein Histone H3 /


Mass: 15331.982 Da / Num. of mol.: 2 / Mutation: C110A
Source method: isolated from a genetically manipulated source
Details: Cys110 residues of chain A/E were mutated to Ala due to the preparation of ML3-modified nucleosome.
Source: (gene. exp.) Xenopus laevis (African clawed frog) / Gene: LOC121398065 / Production host: Escherichia coli (E. coli) / References: UniProt: A0A310TTQ1
#2: Protein Histone H4 /


Mass: 11263.231 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Xenopus laevis (African clawed frog) / Gene: LOC121398084 / Production host: Escherichia coli (E. coli) / References: UniProt: A0A8J1LTD2
#3: Protein Histone H2A /


Mass: 13978.241 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Xenopus laevis (African clawed frog) / Gene: h2ac14.L / Production host: Escherichia coli (E. coli) / References: UniProt: Q6AZJ8
#4: Protein Histone H2B /


Mass: 13524.752 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Xenopus laevis (African clawed frog) / Gene: LOC108704303 / Production host: Escherichia coli (E. coli) / References: UniProt: A0A8J0U496
#7: Protein Chromatin modification-related protein EAF3


Mass: 45266.406 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Saccharomyces cerevisiae (brewer's yeast)
Gene: EAF3 / Production host: Trichoplusia ni (cabbage looper) / References: UniProt: A0A8H4F719

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DNA chain , 2 types, 2 molecules IJ

#5: DNA chain DNA (352-MER)


Mass: 108340.836 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) synthetic construct (others)
#6: DNA chain DNA (352-MER)


Mass: 109079.289 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) synthetic construct (others)

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Details

Has ligand of interestY

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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: Eaf3 CHD in complex with nucleosome / Type: COMPLEX / Entity ID: all / Source: MULTIPLE SOURCES
Molecular weightValue: 0.15 MDa / Experimental value: NO
Source (natural)Organism: Saccharomyces (fungus)
Source (recombinant)Organism: Trichoplusia ni (cabbage looper)
Buffer solutionpH: 7.5
Details: 20 mM HEPES-Na pH 7.5, 40 mM KCl, 2 mM MgCl2, 1 mM TCEP
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationInstrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 277.15 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: 2000 nm / Nominal defocus min: 800 nm
Specimen holderCryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER
Image recordingElectron dose: 44 e/Å2 / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k)
EM imaging opticsEnergyfilter name: GIF Bioquantum / Energyfilter slit width: 20 eV

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Processing

EM software
IDName
1SerialEM
2Warp
3UCSF
4CHIMERAX
5PHENIX
6RELION
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
3D reconstructionResolution: 3.4 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 42076 / Symmetry type: POINT
Atomic model buildingProtocol: RIGID BODY FIT / Space: REAL
RefinementHighest resolution: 3.4 Å

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