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- PDB-9e1u: Snf2h bound nucleosome complex - ClassC1 -

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Basic information

Entry
Database: PDB / ID: 9e1u
TitleSnf2h bound nucleosome complex - ClassC1
Components
  • DNA (151-MER)
  • DNA (152-MER)
  • Histone H2A type 1
  • Histone H2B 1.1
  • Histone H3.2
  • Histone H4
  • SWI/SNF-related matrix-associated actin-dependent regulator of chromatin subfamily A member 5
KeywordsDNA BINDING PROTEIN/DNA / chromatin remodeling / remodelers / DNA BINDING PROTEIN / DNA BINDING PROTEIN-DNA complex
Function / homology
Function and homology information


RSF complex / histone octamer slider activity / ACF complex / WICH complex / negative regulation of mitotic chromosome condensation / CERF complex / CHRAC / NoRC complex / NURF complex / B-WICH complex ...RSF complex / histone octamer slider activity / ACF complex / WICH complex / negative regulation of mitotic chromosome condensation / CERF complex / CHRAC / NoRC complex / NURF complex / B-WICH complex / nucleosome array spacer activity / rDNA heterochromatin formation / ATP-dependent chromatin remodeler activity / chromatin silencing complex / negative regulation of transcription by RNA polymerase I / positive regulation of transcription by RNA polymerase III / DNA methylation-dependent constitutive heterochromatin formation / positive regulation of transcription by RNA polymerase I / regulation of DNA replication / pericentric heterochromatin / nucleosome binding / condensed chromosome / Deposition of new CENPA-containing nucleosomes at the centromere / antiviral innate immune response / cellular response to leukemia inhibitory factor / positive regulation of DNA replication / helicase activity / DNA-templated transcription initiation / NoRC negatively regulates rRNA expression / B-WICH complex positively regulates rRNA expression / Hydrolases; Acting on acid anhydrides; Acting on acid anhydrides to facilitate cellular and subcellular movement / fibrillar center / structural constituent of chromatin / nucleosome / heterochromatin formation / nucleosome assembly / Recruitment and ATM-mediated phosphorylation of repair and signaling proteins at DNA double strand breaks / chromatin organization / site of double-strand break / chromatin remodeling / protein heterodimerization activity / DNA repair / DNA damage response / chromatin binding / regulation of DNA-templated transcription / regulation of transcription by RNA polymerase II / chromatin / nucleolus / positive regulation of transcription by RNA polymerase II / ATP hydrolysis activity / DNA binding / nucleoplasm / ATP binding / nucleus
Similarity search - Function
ISWI, HAND domain / SLIDE domain / ISWI, HAND domain superfamily / HAND / SLIDE / SANT domain profile. / SANT domain / : / SNF2-like, N-terminal domain superfamily / SNF2, N-terminal ...ISWI, HAND domain / SLIDE domain / ISWI, HAND domain superfamily / HAND / SLIDE / SANT domain profile. / SANT domain / : / SNF2-like, N-terminal domain superfamily / SNF2, N-terminal / SNF2-related domain / SANT SWI3, ADA2, N-CoR and TFIIIB'' DNA-binding domains / SANT/Myb 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 / TATA box binding protein associated factor / TATA box binding protein associated factor (TAF), histone-like fold domain / Histone H4, conserved site / Histone H4 signature. / Histone H4 / Histone H4 / CENP-T/Histone H4, histone fold / Centromere kinetochore component CENP-T histone fold / Helicase conserved C-terminal domain / Histone H3 signature 1. / Homeobox-like domain superfamily / Histone H3 signature 2. / Histone H3 / Histone H3/CENP-A / Histone H2A/H2B/H3 / Core histone H2A/H2B/H3/H4 / Histone-fold / helicase superfamily c-terminal domain / 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
ADENOSINE-5'-DIPHOSPHATE / DNA / DNA (> 10) / DNA (> 100) / SWI/SNF-related matrix-associated actin-dependent regulator of chromatin subfamily A member 5 / Histone H2B 1.1 / Histone H2A type 1 / Histone H4 / Histone H3.2
Similarity search - Component
Biological speciesXenopus laevis (African clawed frog)
Homo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.1 Å
AuthorsMalik, D. / Deshmukh, A.A. / Bilokapic, S. / Halic, M.
Funding support United States, 2items
OrganizationGrant numberCountry
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)1R01GM135599 United States
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)1R01GM141694 United States
CitationJournal: bioRxiv / Year: 2025
Title: Mechanisms of chromatin remodeling by an Snf2-type ATPase.
Authors: Deepshikha Malik / Ashish Deshmukh / Silvija Bilokapic / Mario Halic /
Abstract: Chromatin remodeling enzymes play a crucial role in the organization of chromatin, enabling both stability and plasticity of genome regulation. These enzymes use a Snf2-type ATPase motor to move ...Chromatin remodeling enzymes play a crucial role in the organization of chromatin, enabling both stability and plasticity of genome regulation. These enzymes use a Snf2-type ATPase motor to move nucleosomes, but how they translocate DNA around the histone octamer is unclear. Here we use cryo-EM to visualize the continuous motion of nucleosomal DNA induced by human chromatin remodeler SNF2H, an ISWI family member. Our work reveals conformational changes in SNF2H, DNA and histones during nucleosome sliding and provides the structural basis for DNA translocation. ATP hydrolysis induces conformational changes in SNF2H that pull the DNA tracking strand, distorting DNA and histones at SHL2. This is followed by SNF2H rotation on the nucleosome, which first pulls the DNA guide strand and creates one-base pair bulge at SHL2, and then releases the pulled DNA. Given the high conservation of the catalytic motors among ATP-dependent chromatin remodelers, the mechanisms we describe likely apply to other families.
History
DepositionOct 21, 2024Deposition site: RCSB / Processing site: RCSB
Revision 1.0Jan 22, 2025Provider: repository / Type: Initial release
Revision 1.0Jan 22, 2025Data content type: EM metadata / Data content type: EM metadata / Provider: repository / Type: Initial release
Revision 1.0Jan 22, 2025Data content type: Half map / Part number: 1 / Data content type: Half map / Provider: repository / Type: Initial release
Revision 1.0Jan 22, 2025Data content type: Half map / Part number: 2 / Data content type: Half map / Provider: repository / Type: Initial release
Revision 1.0Jan 22, 2025Data content type: Image / Data content type: Image / Provider: repository / Type: Initial release
Revision 1.0Jan 22, 2025Data content type: Primary map / Data content type: Primary map / Provider: repository / Type: Initial release
Revision 1.1May 28, 2025Group: Data collection / Category: em_admin / em_software / Item: _em_admin.last_update / _em_software.name
Revision 1.1May 28, 2025Data content type: EM metadata / Data content type: EM metadata / EM metadata / Group: Data processing / Experimental summary / Data content type: EM metadata / EM metadata / Category: em_admin / em_software / Data content type: EM metadata / EM metadata / Item: _em_admin.last_update / _em_software.name

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: Histone H3.2
B: Histone H4
C: Histone H2A type 1
D: Histone H2B 1.1
E: Histone H3.2
F: Histone H4
G: Histone H2A type 1
H: Histone H2B 1.1
I: DNA (151-MER)
J: DNA (152-MER)
W: SWI/SNF-related matrix-associated actin-dependent regulator of chromatin subfamily A member 5
hetero molecules


Theoretical massNumber of molelcules
Total (without water)325,82212
Polymers325,39411
Non-polymers4271
Water00
1


  • Idetical with deposited unit
  • defined by author&software
  • Evidence: electron microscopy, not applicable
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1

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Components

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Protein , 5 types, 9 molecules AEBFCGDHW

#1: Protein Histone H3.2 / Histone H3


Mass: 15421.101 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Xenopus laevis (African clawed frog) / Production host: Escherichia coli (E. coli) / References: UniProt: P84233
#2: Protein Histone H4


Mass: 11394.426 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Xenopus laevis (African clawed frog) / Production host: Escherichia coli (E. coli) / References: UniProt: P62799
#3: Protein Histone H2A type 1


Mass: 14109.436 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Xenopus laevis (African clawed frog) / Production host: Escherichia coli (E. coli) / References: UniProt: P06897
#4: Protein Histone H2B 1.1 / H2B1.1


Mass: 13979.291 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Xenopus laevis (African clawed frog) / Production host: Escherichia coli (E. coli) / References: UniProt: P02281
#7: Protein SWI/SNF-related matrix-associated actin-dependent regulator of chromatin subfamily A member 5


Mass: 122089.336 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: SMARCA5 / Production host: Escherichia coli (E. coli) / References: UniProt: O60264

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DNA chain , 2 types, 2 molecules IJ

#5: DNA chain DNA (151-MER)


Mass: 46840.824 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) Homo sapiens (human)
#6: DNA chain DNA (152-MER)


Mass: 46655.715 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) Homo sapiens (human)

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Non-polymers , 1 types, 1 molecules

#8: Chemical ChemComp-ADP / ADENOSINE-5'-DIPHOSPHATE


Mass: 427.201 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C10H15N5O10P2 / Feature type: SUBJECT OF INVESTIGATION / Comment: ADP, energy-carrying molecule*YM

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Details

Has ligand of interestY
Has protein modificationN

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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: Snf2h bound nucleosome complex-ClassC1 / Type: COMPLEX / Entity ID: #1-#7 / Source: RECOMBINANT
Source (natural)Organism: Homo sapiens (human)
Source (recombinant)Organism: Escherichia coli (E. coli)
Buffer solutionpH: 7.5
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationCryogen name: ETHANE

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: TFS KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD / Nominal defocus max: 3000 nm / Nominal defocus min: 1000 nm
Image recordingElectron dose: 60 e/Å2 / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k)

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Processing

EM softwareName: PHENIX / Category: model refinement
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
3D reconstructionResolution: 3.1 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 22300 / Symmetry type: POINT
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.00516876
ELECTRON MICROSCOPYf_angle_d0.57924101
ELECTRON MICROSCOPYf_dihedral_angle_d25.3827108
ELECTRON MICROSCOPYf_chiral_restr0.0372734
ELECTRON MICROSCOPYf_plane_restr0.0051992

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