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- EMDB-6880: Structure of Snf2-nucleosome complex in ADP state -

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Basic information

Entry
Database: EMDB / ID: EMD-6880
TitleStructure of Snf2-nucleosome complex in ADP state
Map data
Sample
  • Complex: complex of snf2 and nucleosome in ADP state
    • Protein or peptide: Histone H3.2
    • Protein or peptide: Histone H4
    • Protein or peptide: Histone H2A
    • Protein or peptide: Histone H2B 1.1
    • DNA: DNA (167-MER)
    • DNA: DNA (167-MER)
    • Protein or peptide: Transcription regulatory protein SNF2
  • Ligand: ADENOSINE-5'-DIPHOSPHATE
  • Ligand: MAGNESIUM ION
Keywordscomplex / nucleosome / chromatin remodeling / gene regulation / STRUCTURAL PROTEIN-HYDROLASE-DNA complex
Function / homology
Function and homology information


positive regulation of cell adhesion involved in single-species biofilm formation / positive regulation of mating type switching / positive regulation of invasive growth in response to glucose limitation / aggrephagy / DNA strand invasion / rDNA binding / SWI/SNF complex / ATP-dependent chromatin remodeler activity / nucleosomal DNA binding / ATP-dependent activity, acting on DNA ...positive regulation of cell adhesion involved in single-species biofilm formation / positive regulation of mating type switching / positive regulation of invasive growth in response to glucose limitation / aggrephagy / DNA strand invasion / rDNA binding / SWI/SNF complex / ATP-dependent chromatin remodeler activity / nucleosomal DNA binding / ATP-dependent activity, acting on DNA / helicase activity / Hydrolases; Acting on acid anhydrides; Acting on acid anhydrides to facilitate cellular and subcellular movement / lysine-acetylated histone binding / DNA-templated DNA replication / structural constituent of chromatin / double-strand break repair / nucleosome / RNA polymerase II-specific DNA-binding transcription factor binding / hydrolase activity / chromatin remodeling / protein heterodimerization activity / chromatin / regulation of transcription by RNA polymerase II / positive regulation of transcription by RNA polymerase II / DNA binding / nucleoplasm / ATP binding / nucleus
Similarity search - Function
Glutamine-Leucine-Glutamine, QLQ / QLQ / QLQ domain profile. / QLQ / Snf2, ATP coupling domain / Snf2-ATP coupling, chromatin remodelling complex / Snf2-ATP coupling, chromatin remodelling complex / DNA binding domain with preference for A/T rich regions / Helicase/SANT-associated domain / HSA domain profile. ...Glutamine-Leucine-Glutamine, QLQ / QLQ / QLQ domain profile. / QLQ / Snf2, ATP coupling domain / Snf2-ATP coupling, chromatin remodelling complex / Snf2-ATP coupling, chromatin remodelling complex / DNA binding domain with preference for A/T rich regions / Helicase/SANT-associated domain / HSA domain profile. / AT hook, DNA-binding motif / : / SNF2-like, N-terminal domain superfamily / SNF2, N-terminal / SNF2-related domain / 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 / Helicase conserved C-terminal 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 / Bromodomain, conserved site / Bromodomain signature. / helicase superfamily c-terminal domain / Bromodomain / Bromodomain profile. / bromo domain / Bromodomain / Bromodomain-like superfamily / Superfamilies 1 and 2 helicase C-terminal domain profile. / Superfamilies 1 and 2 helicase ATP-binding type-1 domain profile. / DEAD-like helicases superfamily / Helicase, C-terminal / Helicase superfamily 1/2, ATP-binding domain / P-loop containing nucleoside triphosphate hydrolase
Similarity search - Domain/homology
Histone H2B 1.1 / Histone H2A type 1 / Transcription regulatory protein SNF2 / Histone H4 / Histone H3.2 / Histone H2A
Similarity search - Component
Biological speciesXenopus laevis (African clawed frog) / Saccharomyces cerevisiae (strain ATCC 204508 / S288c) (yeast) / synthetic construct (others)
Methodsingle particle reconstruction / cryo EM / Resolution: 3.62 Å
AuthorsLi M / Xia X
Funding support China, 1 items
OrganizationGrant numberCountry
National Key Research and Development Program2017YFA0102900 China
CitationJournal: Nature / Year: 2019
Title: Mechanism of DNA translocation underlying chromatin remodelling by Snf2.
Authors: Meijing Li / Xian Xia / Yuanyuan Tian / Qi Jia / Xiaoyu Liu / Ying Lu / Ming Li / Xueming Li / Zhucheng Chen /
Abstract: Chromatin remodellers include diverse enzymes with distinct biological functions, but nucleosome-sliding activity appears to be a common theme. Among the remodelling enzymes, Snf2 serves as the ...Chromatin remodellers include diverse enzymes with distinct biological functions, but nucleosome-sliding activity appears to be a common theme. Among the remodelling enzymes, Snf2 serves as the prototype to study the action of this protein family. Snf2 and related enzymes share two conserved RecA-like lobes, which by themselves are able to couple ATP hydrolysis to chromatin remodelling. The mechanism by which these enzymes couple ATP hydrolysis to translocate the nucleosome along the DNA remains unclear. Here we report the structures of Saccharomyces cerevisiae Snf2 bound to the nucleosome in the presence of ADP and ADP-BeF. Snf2 in the ADP-bound state adopts an open conformation similar to that in the apo state, and induces a one-base-pair DNA bulge at superhelix location 2 (SHL2), with the tracking strand showing greater distortion than the guide strand. The DNA distortion propagates to the proximal end, leading to staggered translocation of the two strands. The binding of ADP-BeF triggers a closed conformation of the enzyme, resetting the nucleosome to a relaxed state. Snf2 shows altered interactions with the DNA in different nucleotide states, providing the structural basis for DNA translocation. Together, our findings suggest a fundamental mechanism for the DNA translocation that underlies chromatin remodelling.
History
DepositionJan 8, 2018-
Header (metadata) releaseApr 3, 2019-
Map releaseApr 3, 2019-
UpdateMar 27, 2024-
Current statusMar 27, 2024Processing site: PDBj / Status: Released

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Structure visualization

Movie
  • Surface view with section colored by density value
  • Surface level: 0.04
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  • Surface view with fitted model
  • Atomic models: PDB-5z3o
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Movie viewer
Structure viewerEM map:
SurfViewMolmilJmol/JSmol
Supplemental images

emd_6880.png

Downloads & links

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Map

FileDownload / File: emd_6880.map.gz / Format: CCP4 / Size: 30.5 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Voxel sizeX=Y=Z: 1.32 Å
Density
Contour LevelBy AUTHOR: 0.04 / Movie #1: 0.04
Minimum - Maximum-0.12100615 - 0.23036031
Average (Standard dev.)0.0008919618 (±0.007917287)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions200200200
Spacing200200200
CellA=B=C: 264.0 Å
α=β=γ: 90.0 °

CCP4 map header:

modeImage stored as Reals
Å/pix. X/Y/Z1.321.321.32
M x/y/z200200200
origin x/y/z0.0000.0000.000
length x/y/z264.000264.000264.000
α/β/γ90.00090.00090.000
start NX/NY/NZ-383-383-383
NX/NY/NZ768768768
MAP C/R/S123
start NC/NR/NS000
NC/NR/NS200200200
D min/max/mean-0.1210.2300.001

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Supplemental data

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Sample components

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Entire : complex of snf2 and nucleosome in ADP state

EntireName: complex of snf2 and nucleosome in ADP state
Components
  • Complex: complex of snf2 and nucleosome in ADP state
    • Protein or peptide: Histone H3.2
    • Protein or peptide: Histone H4
    • Protein or peptide: Histone H2A
    • Protein or peptide: Histone H2B 1.1
    • DNA: DNA (167-MER)
    • DNA: DNA (167-MER)
    • Protein or peptide: Transcription regulatory protein SNF2
  • Ligand: ADENOSINE-5'-DIPHOSPHATE
  • Ligand: MAGNESIUM ION

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Supramolecule #1: complex of snf2 and nucleosome in ADP state

SupramoleculeName: complex of snf2 and nucleosome in ADP state / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#7
Source (natural)Organism: Xenopus laevis (African clawed frog)
Molecular weightTheoretical: 300 KDa

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Macromolecule #1: Histone H3.2

MacromoleculeName: Histone H3.2 / type: protein_or_peptide / ID: 1 / Number of copies: 2 / Enantiomer: LEVO
Source (natural)Organism: Xenopus laevis (African clawed frog)
Molecular weightTheoretical: 15.30393 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString:
ARTKQTARKS TGGKAPRKQL ATKAARKSAP ATGGVKKPHR YRPGTVALRE IRRYQKSTEL LIRKLPFQRL VREIAQDFKT DLRFQSSAV MALQEASEAY LVALFEDTNL CAIHAKRVTI MPKDIQLARR IRGERA

UniProtKB: Histone H3.2

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Macromolecule #2: Histone H4

MacromoleculeName: Histone H4 / type: protein_or_peptide / ID: 2 / Number of copies: 2 / Enantiomer: LEVO
Source (natural)Organism: Xenopus laevis (African clawed frog)
Molecular weightTheoretical: 11.263231 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString:
SGRGKGGKGL GKGGAKRHRK VLRDNIQGIT KPAIRRLARR GGVKRISGLI YEETRGVLKV FLENVIRDAV TYTEHAKRKT VTAMDVVYA LKRQGRTLYG FGG

UniProtKB: Histone H4

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Macromolecule #3: Histone H2A

MacromoleculeName: Histone H2A / type: protein_or_peptide / ID: 3 / Number of copies: 2 / Enantiomer: LEVO
Source (natural)Organism: Xenopus laevis (African clawed frog)
Molecular weightTheoretical: 13.978241 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString:
SGRGKQGGKT RAKAKTRSSR AGLQFPVGRV HRLLRKGNYA ERVGAGAPVY LAAVLEYLTA EILELAGNAA RDNKKTRIIP RHLQLAVRN DEELNKLLGR VTIAQGGVLP NIQSVLLPKK TESSKSAKSK

UniProtKB: Histone H2A

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Macromolecule #4: Histone H2B 1.1

MacromoleculeName: Histone H2B 1.1 / type: protein_or_peptide / ID: 4 / Number of copies: 2 / Enantiomer: LEVO
Source (natural)Organism: Xenopus laevis (African clawed frog)
Molecular weightTheoretical: 13.524752 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString:
AKSAPAPKKG SKKAVTKTQK KDGKKRRKTR KESYAIYVYK VLKQVHPDTG ISSKAMSIMN SFVNDVFERI AGEASRLAHY NKRSTITSR EIQTAVRLLL PGELAKHAVS EGTKAVTKYT SAK

UniProtKB: Histone H2B 1.1

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Macromolecule #7: Transcription regulatory protein SNF2

MacromoleculeName: Transcription regulatory protein SNF2 / type: protein_or_peptide / ID: 7 / Number of copies: 1 / Enantiomer: LEVO
EC number: Hydrolases; Acting on acid anhydrides; Acting on acid anhydrides to facilitate cellular and subcellular movement
Source (natural)Organism: Saccharomyces cerevisiae (strain ATCC 204508 / S288c) (yeast)
Strain: ATCC 204508 / S288c
Molecular weightTheoretical: 85.802805 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString: AYIKLLDQTK DTRITHLLRQ TNAFLDSLTR AVKDQQKYTK EMIDSHIKEA SEEVDDLSMV PKMKDEEYDD DDDNSNVDYY NVAHRIKED IKKQPSILVG GTLKDYQIKG LQWMVSLFNN HLNGILADEM GLGKTIQTIS LLTYLYEMKN IRGPYLVIVP L STLSNWSS ...String:
AYIKLLDQTK DTRITHLLRQ TNAFLDSLTR AVKDQQKYTK EMIDSHIKEA SEEVDDLSMV PKMKDEEYDD DDDNSNVDYY NVAHRIKED IKKQPSILVG GTLKDYQIKG LQWMVSLFNN HLNGILADEM GLGKTIQTIS LLTYLYEMKN IRGPYLVIVP L STLSNWSS EFAKWAPTLR TISFKGSPNE RKAKQAKIRA GEFDVVLTTF EYIIKERALL SKVKWVHMII DEGHRMKNAQ SK LSLTLNT HYHADYRLIL TGTPLQNNLP ELWALLNFVL PKIFNSVKSF DEWFNTPFAN TGGQDKIELS EEETLLVIRR LHK VLRPFL LRRLKKDVEK ELPDKVEKVV KCKMSALQQI MYQQMLKYRR LFIGDQNNKK MVGLRGFNNQ IMQLKKICNH PFVF EEVED QINPTRETND DIWRVAGKFE LLDRILPKLK ATGHRVLIFF QMTQIMDIME DFLRYINIKY LRLDGHTKSD ERSEL LRLF NAPDSEYLCF ILSTRAGGLG LNLQTADTVI IFDTDWNPHQ DLQAQDRAHR IGQKNEVRIL RLITTNSVEE VILERA YKK LDIDGKVIQA GKFDNKSTSE EQEALLRSLL DAEEERRKKR ESGVEEEEEL KDSEINEILA RNDEEMAVLT RMDEDRS KK EEELGVKSRL LEKSELPDIY SRDIGAELKR EESESAAVYN GRGARERKTA TYNDNMSEEQ WLRQFEVSDD EKNDKQAR K QRTKKEDKSE AIDG

UniProtKB: Transcription regulatory protein SNF2

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Macromolecule #5: DNA (167-MER)

MacromoleculeName: DNA (167-MER) / type: dna / ID: 5 / Number of copies: 1 / Classification: DNA
Source (natural)Organism: synthetic construct (others)
Molecular weightTheoretical: 51.381758 KDa
SequenceString: (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)(DA) (DC)(DG)(DT)(DG)(DT)(DC)(DA)(DG)(DA)(DT) (DA)(DT)(DA)(DT)(DA)(DC) (DA)(DT)(DC) (DC)(DT)(DG)(DA)(DA)(DG)(DC)(DT)(DT)(DG) (DT)(DC)(DG)(DA)(DG)(DA)(DA) (DG)(DT) (DA)(DC)(DG)(DA)(DT)

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Macromolecule #6: DNA (167-MER)

MacromoleculeName: DNA (167-MER) / type: dna / ID: 6 / Number of copies: 1 / Classification: DNA
Source (natural)Organism: synthetic construct (others)
Molecular weightTheoretical: 51.723949 KDa
SequenceString: (DA)(DT)(DC)(DG)(DT)(DA)(DC)(DT)(DT)(DC) (DT)(DC)(DG)(DA)(DC)(DA)(DA)(DG)(DC)(DT) (DT)(DC)(DA)(DG)(DG)(DA)(DT)(DG)(DT) (DA)(DT)(DA)(DT)(DA)(DT)(DC)(DT)(DG)(DA) (DC) (DA)(DC)(DG)(DT)(DG)(DC) ...String:
(DA)(DT)(DC)(DG)(DT)(DA)(DC)(DT)(DT)(DC) (DT)(DC)(DG)(DA)(DC)(DA)(DA)(DG)(DC)(DT) (DT)(DC)(DA)(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) (DG)(DG)(DC)(DC)(DT)(DC)(DG)(DG)(DC)(DA) (DC)(DC)(DG)(DG)(DG)(DA)(DT) (DT)(DC) (DT)(DC)(DG)(DA)(DT)

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Macromolecule #8: ADENOSINE-5'-DIPHOSPHATE

MacromoleculeName: ADENOSINE-5'-DIPHOSPHATE / type: ligand / ID: 8 / Number of copies: 1 / Formula: ADP
Molecular weightTheoretical: 427.201 Da
Chemical component information

ChemComp-ADP:
ADENOSINE-5'-DIPHOSPHATE / ADP, energy-carrying molecule*YM / Adenosine diphosphate

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Macromolecule #9: MAGNESIUM ION

MacromoleculeName: MAGNESIUM ION / type: ligand / ID: 9 / Number of copies: 1 / Formula: MG
Molecular weightTheoretical: 24.305 Da

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Experimental details

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Structure determination

Methodcryo EM
Processingsingle particle reconstruction
Aggregation stateparticle

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Sample preparation

Concentration0.3 mg/mL
BufferpH: 7.5
GridModel: Quantifoil R1.2/1.3 / Material: COPPER / Mesh: 400 / Support film - Material: CARBON / Support film - topology: HOLEY / Pretreatment - Type: GLOW DISCHARGE / Pretreatment - Time: 30 sec. / Pretreatment - Atmosphere: AIR
VitrificationCryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 281 K / Instrument: FEI VITROBOT MARK IV

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsC2 aperture diameter: 70.0 µm / Calibrated defocus max: 3.1 µm / Calibrated defocus min: 1.7 µm / Calibrated magnification: 22500 / Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELDBright-field microscopy / Cs: 2.7 mm / Nominal defocus max: 3.2 µm / Nominal defocus min: 1.8 µm / Nominal magnification: 22500
Sample stageSpecimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER / Cooling holder cryogen: NITROGEN
Image recordingFilm or detector model: GATAN K2 SUMMIT (4k x 4k) / Detector mode: SUPER-RESOLUTION / Digitization - Dimensions - Width: 3838 pixel / Digitization - Dimensions - Height: 3710 pixel / Digitization - Frames/image: 1-32 / Number grids imaged: 2 / Number real images: 2388 / Average electron dose: 50.0 e/Å2
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Startup modelType of model: PDB ENTRY
PDB model - PDB ID:

5x0y

Initial angle assignmentType: ANGULAR RECONSTITUTION
Final angle assignmentType: ANGULAR RECONSTITUTION
Final reconstructionApplied symmetry - Point group: C1 (asymmetric) / Resolution.type: BY AUTHOR / Resolution: 3.62 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: RELION (ver. 2.0) / Number images used: 146723

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Atomic model buiding 1

RefinementSpace: REAL / Protocol: RIGID BODY FIT
Output model

PDB-5z3o:
Structure of Snf2-nucleosome complex in ADP state

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