[English] 日本語
Yorodumi
- PDB-9ej9: Human FANCJ helicase bound to a parallel G4 DNA -

+
Open data


ID or keywords:

Loading...

-
Basic information

Entry
Database: PDB / ID: 9ej9
TitleHuman FANCJ helicase bound to a parallel G4 DNA
Components
  • DNA (31-MER)
  • Fanconi anemia group J protein
KeywordsISOMERASE/DNA / Helicase / G4 / ISOMERASE-DNA complex
Function / homology
Function and homology information


G-quadruplex unwinding activity / Cytosolic iron-sulfur cluster assembly / double-strand break repair involved in meiotic recombination / homologous recombination / protein-DNA covalent cross-linking repair / Impaired BRCA2 binding to PALB2 / DNA 5'-3' helicase / HDR through Single Strand Annealing (SSA) / Homologous DNA Pairing and Strand Exchange / Defective homologous recombination repair (HRR) due to BRCA1 loss of function ...G-quadruplex unwinding activity / Cytosolic iron-sulfur cluster assembly / double-strand break repair involved in meiotic recombination / homologous recombination / protein-DNA covalent cross-linking repair / Impaired BRCA2 binding to PALB2 / DNA 5'-3' helicase / HDR through Single Strand Annealing (SSA) / Homologous DNA Pairing and Strand Exchange / Defective homologous recombination repair (HRR) due to BRCA1 loss of function / Defective HDR through Homologous Recombination Repair (HRR) due to PALB2 loss of BRCA1 binding function / Defective HDR through Homologous Recombination Repair (HRR) due to PALB2 loss of BRCA2/RAD51/RAD51C binding function / Resolution of D-loop Structures through Synthesis-Dependent Strand Annealing (SDSA) / Resolution of D-loop Structures through Holliday Junction Intermediates / Impaired BRCA2 binding to RAD51 / Presynaptic phase of homologous DNA pairing and strand exchange / DNA damage checkpoint signaling / DNA helicase activity / replication fork / nucleotide-excision repair / G2/M DNA damage checkpoint / HDR through Homologous Recombination (HRR) / double-strand break repair / 4 iron, 4 sulfur cluster binding / nuclear membrane / Processing of DNA double-strand break ends / 5'-3' DNA helicase activity / Regulation of TP53 Activity through Phosphorylation / DNA repair / regulation of transcription by RNA polymerase II / ATP hydrolysis activity / DNA binding / nucleoplasm / ATP binding / metal ion binding / nucleus / cytoplasm
Similarity search - Function
ATP-dependent helicase Rad3/Chl1-like / Helicase-like, DEXD box c2 type / DEAD2 / DEAD_2 / DEXDc2 / Helicase superfamily 1/2, DinG/Rad3-like / Helicase superfamily 1/2, ATP-binding domain, DinG/Rad3-type / Superfamilies 1 and 2 helicase ATP-binding type-2 domain profile. / HELICc2 / ATP-dependent helicase, C-terminal ...ATP-dependent helicase Rad3/Chl1-like / Helicase-like, DEXD box c2 type / DEAD2 / DEAD_2 / DEXDc2 / Helicase superfamily 1/2, DinG/Rad3-like / Helicase superfamily 1/2, ATP-binding domain, DinG/Rad3-type / Superfamilies 1 and 2 helicase ATP-binding type-2 domain profile. / HELICc2 / ATP-dependent helicase, C-terminal / Helicase C-terminal domain / DEAD-like helicases superfamily / Helicase superfamily 1/2, ATP-binding domain / P-loop containing nucleoside triphosphate hydrolase
Similarity search - Domain/homology
PHOSPHOTHIOPHOSPHORIC ACID-ADENYLATE ESTER / : / IRON/SULFUR CLUSTER / DNA / DNA (> 10) / Fanconi anemia group J protein
Similarity search - Component
Biological speciesHomo sapiens (human)
synthetic construct (others)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.8 Å
AuthorsYou, Q. / Li, H.
Funding support United States, 1items
OrganizationGrant numberCountry
National Institutes of Health/National Cancer Institute (NIH/NCI)GM131754 United States
CitationJournal: Nat Commun / Year: 2026
Title: Cryo-EM structures of human FANCJ reveal the mechanism of G-quadruplex unwinding and disease-associated mutations.
Authors: Qinglong You / Naoko Kakusho / Hiroyuki Sasanuma / Hisao Masai / Huilin Li /
Abstract: Guanine-rich nucleic acid sequences can fold into G-quadruplex (G4) structures that regulate DNA replication, transcription, and translation. Fanconi anemia group J helicase (FANCJ) resolves G4 ...Guanine-rich nucleic acid sequences can fold into G-quadruplex (G4) structures that regulate DNA replication, transcription, and translation. Fanconi anemia group J helicase (FANCJ) resolves G4 structures at stalled replication forks. Despite its central role in genome maintenance, the molecular basis of G4 recognition and unwinding by FANCJ has remained unclear. Here, we report cryo-EM structures of human FANCJ bound to a G4-containing DNA substrate and ATPγS. The structures reveal direct engagement of the G4 by the Fe-S domain. Structure-guided mutagenesis demonstrates that this interface is essential for G4 binding and unwinding. The structures further capture open and closed conformational states linked to ATP hydrolysis, providing a mechanism for directional translocation along 5' ssDNA and progressive G4 unwinding. Together, these findings establish the structural basis of G4 recognition by FANCJ and provide mechanistic insights into how disease-associated mutations linked to Fanconi anemia and breast cancer impair helicase function.
History
DepositionNov 27, 2024Deposition site: RCSB / Processing site: RCSB
Revision 1.0Jul 29, 2026Provider: repository / Type: Initial release
Revision 1.0Jul 29, 2026Data content type: EM metadata / Data content type: EM metadata / Provider: repository / Type: Initial release
Revision 1.0Jul 29, 2026Data content type: Half map / Part number: 1 / Data content type: Half map / Provider: repository / Type: Initial release
Revision 1.0Jul 29, 2026Data content type: Half map / Part number: 2 / Data content type: Half map / Provider: repository / Type: Initial release
Revision 1.0Jul 29, 2026Data content type: Image / Data content type: Image / Provider: repository / Type: Initial release
Revision 1.0Jul 29, 2026Data content type: Primary map / Data content type: Primary map / Provider: repository / Type: Initial release

-
Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

-
Assembly

Deposited unit
A: Fanconi anemia group J protein
B: DNA (31-MER)
hetero molecules


Theoretical massNumber of molelcules
Total (without water)155,3706
Polymers154,4322
Non-polymers9384
Water00
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: electron microscopy, not applicable
TypeNameSymmetry operationNumber
identity operation1_5551

-
Components

-
Protein / DNA chain , 2 types, 2 molecules AB

#1: Protein Fanconi anemia group J protein / BRCA1-associated C-terminal helicase 1 / BRCA1-interacting protein C-terminal helicase 1 / BRCA1- ...BRCA1-associated C-terminal helicase 1 / BRCA1-interacting protein C-terminal helicase 1 / BRCA1-interacting protein 1 / DNA 5'-3' helicase FANCJ


Mass: 143773.000 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: BRIP1, BACH1, FANCJ / Production host: Spodoptera frugiperda (fall armyworm) / References: UniProt: Q9BX63, DNA 5'-3' helicase
#2: DNA chain DNA (31-MER)


Mass: 10658.822 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) synthetic construct (others)

-
Non-polymers , 4 types, 4 molecules

#3: Chemical ChemComp-AGS / PHOSPHOTHIOPHOSPHORIC ACID-ADENYLATE ESTER / ATP-GAMMA-S / ADENOSINE 5'-(3-THIOTRIPHOSPHATE) / ADENOSINE 5'-(GAMMA-THIOTRIPHOSPHATE) / ADENOSINE-5'-DIPHOSPHATE MONOTHIOPHOSPHATE


Mass: 523.247 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C10H16N5O12P3S / Feature type: SUBJECT OF INVESTIGATION / Comment: ATP-gamma-S, energy-carrying molecule analogue*YM
#4: Chemical ChemComp-MG / MAGNESIUM ION


Mass: 24.305 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: Mg / Feature type: SUBJECT OF INVESTIGATION
#5: Chemical ChemComp-SF4 / IRON/SULFUR CLUSTER


Mass: 351.640 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: Fe4S4 / Feature type: SUBJECT OF INVESTIGATION
#6: Chemical ChemComp-K / POTASSIUM ION


Mass: 39.098 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: K / Feature type: SUBJECT OF INVESTIGATION

-
Details

Has ligand of interestY
Has protein modificationN

-
Experimental details

-
Experiment

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

-
Sample preparation

ComponentName: Complex of Human FANCJ with a parallel G4 DNA with 5' ssDNA overhang
Type: COMPLEX / Entity ID: #1-#2 / Source: MULTIPLE SOURCES
Source (natural)Organism: Homo sapiens (human)
Source (recombinant)Organism: Spodoptera frugiperda (fall armyworm)
Buffer solutionpH: 7.4
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationCryogen name: ETHANE

-
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: 1700 nm / Nominal defocus min: 1300 nm / Cs: 2.7 mm / C2 aperture diameter: 100 µm
Image recordingElectron dose: 60 e/Å2 / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k)

-
Processing

EM softwareName: PHENIX / Category: model refinement
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
3D reconstructionResolution: 2.8 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 1749296 / Symmetry type: POINT
Atomic model buildingProtocol: AB INITIO MODEL / Space: REAL
RefinementHighest resolution: 2.8 Å
Stereochemistry target values: REAL-SPACE (WEIGHTED MAP SUM AT ATOM CENTERS)
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.0046282
ELECTRON MICROSCOPYf_angle_d0.5338649
ELECTRON MICROSCOPYf_dihedral_angle_d19.9931072
ELECTRON MICROSCOPYf_chiral_restr0.041962
ELECTRON MICROSCOPYf_plane_restr0.004981

+
About Yorodumi

-
News

-
Feb 9, 2022. New format data for meta-information of EMDB entries

New format data for meta-information of EMDB entries

  • Version 3 of the EMDB header file is now the official format.
  • The previous official version 1.9 will be removed from the archive.

Related info.:EMDB header

External links:wwPDB to switch to version 3 of the EMDB data model

-
Aug 12, 2020. Covid-19 info

Covid-19 info

URL: https://pdbj.org/emnavi/covid19.php

New page: Covid-19 featured information page in EM Navigator.

Related info.:Covid-19 info / Mar 5, 2020. Novel coronavirus structure data

+
Mar 5, 2020. Novel coronavirus structure data

Novel coronavirus structure data

Related info.:Yorodumi Speices / Aug 12, 2020. Covid-19 info

External links:COVID-19 featured content - PDBj / Molecule of the Month (242)：Coronavirus Proteases

+
Jan 31, 2019. EMDB accession codes are about to change! (news from PDBe EMDB page)

EMDB accession codes are about to change! (news from PDBe EMDB page)

  • The allocation of 4 digits for EMDB accession codes will soon come to an end. Whilst these codes will remain in use, new EMDB accession codes will include an additional digit and will expand incrementally as the available range of codes is exhausted. The current 4-digit format prefixed with “EMD-” (i.e. EMD-XXXX) will advance to a 5-digit format (i.e. EMD-XXXXX), and so on. It is currently estimated that the 4-digit codes will be depleted around Spring 2019, at which point the 5-digit format will come into force.
  • The EM Navigator/Yorodumi systems omit the EMD- prefix.

Related info.:Q: What is EMD? / ID/Accession-code notation in Yorodumi/EM Navigator

External links:EMDB Accession Codes are Changing Soon! / Contact to PDBj

+
Jul 12, 2017. Major update of PDB

Major update of PDB

  • wwPDB released updated PDB data conforming to the new PDBx/mmCIF dictionary.
  • This is a major update changing the version number from 4 to 5, and with Remediation, in which all the entries are updated.
  • In this update, many items about electron microscopy experimental information are reorganized (e.g. em_software).
  • Now, EM Navigator and Yorodumi are based on the updated data.

External links:wwPDB Remediation / Enriched Model Files Conforming to OneDep Data Standards Now Available in the PDB FTP Archive

-
Yorodumi

Thousand views of thousand structures

  • Yorodumi is a browser for structure data from EMDB, PDB, SASBDB, etc.
  • This page is also the successor to EM Navigator detail page, and also detail information page/front-end page for Omokage search.
  • The word "yorodu" (or yorozu) is an old Japanese word meaning "ten thousand". "mi" (miru) is to see.

Related info.:EMDB / PDB / SASBDB / Comparison of 3 databanks / Yorodumi Search / Aug 31, 2016. New EM Navigator & Yorodumi / Yorodumi Papers / Jmol/JSmol / Function and homology information / Changes in new EM Navigator and Yorodumi

Read more