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- PDB-8eu2: Class3 of the INO80-Hexasome complex -

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Basic information

Entry
Database: PDB / ID: 8eu2
TitleClass3 of the INO80-Hexasome complex
Components
  • (DNA (110-MER)) x 2
  • Histone H2A type 1
  • Histone H2B 1.1
  • Histone H3.2
  • Histone H4
KeywordsSTRUCTURAL PROTEIN/DNA / Chromatin Remodeler / hexasome / DNA BINDING PROTEIN / STRUCTURAL PROTEIN-DNA complex
Function / homology
Function and homology information


structural constituent of chromatin / nucleosome / heterochromatin formation / nucleosome assembly / protein heterodimerization activity / DNA binding / nucleus
Similarity search - Function
: / Histone H2B signature. / Histone H2A conserved site / Histone H2A signature. / Histone H2B / Histone H2B / Histone H2A, C-terminal domain / C-terminus of histone H2A / Histone 2A / Histone H2A ...: / Histone H2B signature. / Histone H2A conserved site / Histone H2A signature. / Histone H2B / Histone H2B / Histone H2A, C-terminal domain / C-terminus of histone H2A / Histone 2A / Histone H2A / 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 / Histone H3 signature 1. / Histone H3 signature 2. / Histone H3 / Histone H3/CENP-A / Histone H2A/H2B/H3 / Core histone H2A/H2B/H3/H4 domain / Histone-fold
Similarity search - Domain/homology
DNA / DNA (> 10) / DNA (> 100) / Histone H3 / Histone H2B 1.1 / Histone H4 / Histone H2A
Similarity search - Component
Biological speciesXenopus laevis (African clawed frog)
synthetic construct (others)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.93 Å
AuthorsWu, H. / Munoz, E. / Gourdet, M. / Cheng, Y.F. / Narlikar, G.
Funding support United States, 1items
OrganizationGrant numberCountry
National Institutes of Health/Eunice Kennedy Shriver National Institute of Child Health & Human Development (NIH/NICHD) United States
CitationJournal: Science / Year: 2023
Title: Reorientation of INO80 on hexasomes reveals basis for mechanistic versatility.
Authors: Hao Wu / Elise N Muñoz / Laura J Hsieh / Un Seng Chio / Muryam A Gourdet / Geeta J Narlikar / Yifan Cheng /
Abstract: Unlike other chromatin remodelers, INO80 preferentially mobilizes hexasomes, which can form during transcription. Why INO80 prefers hexasomes over nucleosomes remains unclear. Here, we report ...Unlike other chromatin remodelers, INO80 preferentially mobilizes hexasomes, which can form during transcription. Why INO80 prefers hexasomes over nucleosomes remains unclear. Here, we report structures of INO80 bound to a hexasome or a nucleosome. INO80 binds the two substrates in substantially different orientations. On a hexasome, INO80 places its ATPase subunit, Ino80, at superhelical location -2 (SHL -2), in contrast to SHL -6 and SHL -7, as previously seen on nucleosomes. Our results suggest that INO80 action on hexasomes resembles action by other remodelers on nucleosomes such that Ino80 is maximally active near SHL -2. The SHL -2 position also plays a critical role for nucleosome remodeling by INO80. Overall, the mechanistic adaptations used by INO80 for preferential hexasome sliding imply that subnucleosomal particles play considerable regulatory roles.
History
DepositionOct 18, 2022Deposition site: RCSB / Processing site: RCSB
Revision 1.0Jul 12, 2023Provider: repository / Type: Initial release
Revision 1.1Aug 2, 2023Group: Database references / Category: citation / citation_author
Item: _citation.journal_volume / _citation.page_first ..._citation.journal_volume / _citation.page_first / _citation.page_last / _citation_author.identifier_ORCID
Revision 2.0Apr 3, 2024Group: Advisory / Atomic model ...Advisory / Atomic model / Data collection / Database references / Derived calculations / Polymer sequence / Source and taxonomy / Structure summary
Category: atom_site / chem_comp_atom ...atom_site / chem_comp_atom / chem_comp_bond / em_entity_assembly / em_imaging / em_software / entity / entity_poly / entity_poly_seq / entity_src_gen / ndb_struct_na_base_pair / ndb_struct_na_base_pair_step / pdbx_contact_author / pdbx_entity_src_syn / pdbx_poly_seq_scheme / pdbx_struct_sheet_hbond / pdbx_unobs_or_zero_occ_atoms / pdbx_unobs_or_zero_occ_residues / pdbx_validate_torsion / struct_conf / struct_conn / struct_ref / struct_ref_seq / struct_ref_seq_dif / struct_sheet_range
Item: _atom_site.auth_asym_id / _atom_site.auth_seq_id ..._atom_site.auth_asym_id / _atom_site.auth_seq_id / _atom_site.label_seq_id / _atom_site.pdbx_formal_charge / _em_entity_assembly.source / _em_imaging.nominal_defocus_max / _em_imaging.nominal_defocus_min / _entity.formula_weight / _entity.pdbx_description / _entity_poly.pdbx_seq_one_letter_code / _entity_poly.pdbx_seq_one_letter_code_can / _entity_poly.pdbx_strand_id / _entity_src_gen.pdbx_end_seq_num / _entity_src_gen.pdbx_gene_src_gene / _ndb_struct_na_base_pair.i_label_seq_id / _ndb_struct_na_base_pair.j_label_seq_id / _ndb_struct_na_base_pair_step.i_label_seq_id_1 / _ndb_struct_na_base_pair_step.i_label_seq_id_2 / _ndb_struct_na_base_pair_step.j_label_seq_id_1 / _ndb_struct_na_base_pair_step.j_label_seq_id_2 / _pdbx_contact_author.id / _pdbx_entity_src_syn.pdbx_end_seq_num / _pdbx_struct_sheet_hbond.range_1_auth_asym_id / _pdbx_struct_sheet_hbond.range_1_auth_seq_id / _pdbx_struct_sheet_hbond.range_1_label_seq_id / _pdbx_struct_sheet_hbond.range_2_auth_asym_id / _pdbx_struct_sheet_hbond.range_2_auth_seq_id / _pdbx_struct_sheet_hbond.range_2_label_seq_id / _pdbx_validate_torsion.auth_asym_id / _pdbx_validate_torsion.auth_seq_id / _struct_conf.beg_auth_asym_id / _struct_conf.beg_auth_seq_id / _struct_conf.beg_label_seq_id / _struct_conf.end_auth_asym_id / _struct_conf.end_auth_seq_id / _struct_conf.end_label_seq_id / _struct_conn.ptnr1_label_seq_id / _struct_conn.ptnr2_label_seq_id / _struct_ref.db_code / _struct_ref.pdbx_align_begin / _struct_ref.pdbx_db_accession / _struct_ref.pdbx_seq_one_letter_code / _struct_ref_seq.db_align_beg / _struct_ref_seq.db_align_end / _struct_ref_seq.pdbx_auth_seq_align_beg / _struct_ref_seq.pdbx_auth_seq_align_end / _struct_ref_seq.pdbx_db_accession / _struct_ref_seq.pdbx_strand_id / _struct_ref_seq.seq_align_beg / _struct_ref_seq.seq_align_end / _struct_sheet_range.beg_auth_asym_id / _struct_sheet_range.beg_auth_seq_id / _struct_sheet_range.beg_label_seq_id / _struct_sheet_range.end_auth_asym_id / _struct_sheet_range.end_auth_seq_id / _struct_sheet_range.end_label_seq_id
Description: Sequence discrepancy
Details: We renumbered residues and changed the molecule names
Provider: author / Type: Coordinate replacement

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
I: DNA (110-MER)
J: DNA (110-MER)
A: Histone H3.2
B: Histone H4
C: Histone H2A type 1
D: Histone H2B 1.1
E: Histone H3.2
F: Histone H4


Theoretical massNumber of molelcules
Total (without water)221,5498
Polymers221,5498
Non-polymers00
Water00
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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DNA chain , 2 types, 2 molecules IJ

#1: DNA chain DNA (110-MER)


Mass: 69840.398 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) synthetic construct (others)
#2: DNA chain DNA (110-MER)


Mass: 70347.750 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) synthetic construct (others)

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Protein , 4 types, 6 molecules AEBFCD

#3: Protein Histone H3.2


Mass: 15403.062 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Xenopus laevis (African clawed frog)
Gene: LOC121398065, LOC108703785, LOC121398067, XELAEV_18002543mg
Production host: Escherichia coli (E. coli) / References: UniProt: A0A310TTQ1
#4: 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
#5: Protein Histone H2A type 1


Mass: 14109.436 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Xenopus laevis (African clawed frog) / Gene: hist1h2aj, LOC494591, XELAEV_18003602mg / Production host: Escherichia coli (E. coli) / References: UniProt: Q6AZJ8
#6: Protein Histone H2B 1.1 / H2B1.1


Mass: 13655.948 Da / Num. of mol.: 1
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

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Experimental details

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Experiment

ExperimentMethod: ELECTRON MICROSCOPY
EM experimentAggregation state: CELL / 3D reconstruction method: single particle reconstruction

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Sample preparation

ComponentName: INO80-Hex / Type: COMPLEX / Entity ID: all / Source: MULTIPLE SOURCES
Source (natural)Organism: Xenopus laevis (African clawed frog)
Source (recombinant)Organism: Homo sapiens (human)
Buffer solutionpH: 7.5
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationCryogen name: OTHER

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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: SPOT SCAN
Electron lensMode: BRIGHT FIELD / Nominal defocus max: 2000 nm / Nominal defocus min: 1000 nm
Image recordingElectron dose: 67 e/Å2 / Film or detector model: GATAN K3 (6k x 4k)

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Processing

CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
3D reconstructionResolution: 2.93 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 233675 / Symmetry type: POINT

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