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Yorodumi- PDB-8a2q: Structure of the DNA-bound FANCD2-FANCI complex containing phosph... -
+Open data
-Basic information
Entry | Database: PDB / ID: 8a2q | ||||||||||||
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Title | Structure of the DNA-bound FANCD2-FANCI complex containing phosphomimetic FANCI | ||||||||||||
Components |
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Keywords | DNA BINDING PROTEIN / nucleic acid protein complex / DNA clamp / solenoid domains / Fanconi anemia / DNA repair / DNA damage / DNA inter strand crosslink / ubiquitination / ATR / pathway activation | ||||||||||||
Function / homology | Function and homology information Fanconi Anemia Pathway in DNA repair / Fanconi Anemia Pathway / homologous chromosome pairing at meiosis / double-strand break repair involved in meiotic recombination / mitotic intra-S DNA damage checkpoint signaling / interstrand cross-link repair / DNA polymerase binding / condensed chromosome / DNA repair / nucleoplasm / nucleus Similarity search - Function | ||||||||||||
Biological species | Gallus gallus (chicken) synthetic construct (others) | ||||||||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.53 Å | ||||||||||||
Authors | Passmore, L.A. / Sijacki, T. / Alcon, P. | ||||||||||||
Funding support | United Kingdom, Germany, European Union, 3items
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Citation | Journal: Nat Struct Mol Biol / Year: 2022 Title: The DNA-damage kinase ATR activates the FANCD2-FANCI clamp by priming it for ubiquitination. Authors: Tamara Sijacki / Pablo Alcón / Zhuo A Chen / Stephen H McLaughlin / Shabih Shakeel / Juri Rappsilber / Lori A Passmore / Abstract: DNA interstrand cross-links are tumor-inducing lesions that block DNA replication and transcription. When cross-links are detected at stalled replication forks, ATR kinase phosphorylates FANCI, which ...DNA interstrand cross-links are tumor-inducing lesions that block DNA replication and transcription. When cross-links are detected at stalled replication forks, ATR kinase phosphorylates FANCI, which stimulates monoubiquitination of the FANCD2-FANCI clamp by the Fanconi anemia core complex. Monoubiquitinated FANCD2-FANCI is locked onto DNA and recruits nucleases that mediate DNA repair. However, it remains unclear how phosphorylation activates this pathway. Here, we report structures of FANCD2-FANCI complexes containing phosphomimetic FANCI. We observe that, unlike wild-type FANCD2-FANCI, the phosphomimetic complex closes around DNA, independent of the Fanconi anemia core complex. The phosphomimetic mutations do not substantially alter DNA binding but instead destabilize the open state of FANCD2-FANCI and alter its conformational dynamics. Overall, our results demonstrate that phosphorylation primes the FANCD2-FANCI clamp for ubiquitination, showing how multiple posttranslational modifications are coordinated to control DNA repair. | ||||||||||||
History |
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-Structure visualization
Structure viewer | Molecule: MolmilJmol/JSmol |
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-Downloads & links
-Download
PDBx/mmCIF format | 8a2q.cif.gz | 635.2 KB | Display | PDBx/mmCIF format |
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PDB format | pdb8a2q.ent.gz | 492 KB | Display | PDB format |
PDBx/mmJSON format | 8a2q.json.gz | Tree view | PDBx/mmJSON format | |
Others | Other downloads |
-Validation report
Summary document | 8a2q_validation.pdf.gz | 1.2 MB | Display | wwPDB validaton report |
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Full document | 8a2q_full_validation.pdf.gz | 1.2 MB | Display | |
Data in XML | 8a2q_validation.xml.gz | 61.4 KB | Display | |
Data in CIF | 8a2q_validation.cif.gz | 98.2 KB | Display | |
Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/a2/8a2q ftp://data.pdbj.org/pub/pdb/validation_reports/a2/8a2q | HTTPS FTP |
-Related structure data
Related structure data | 15101MC C: citing same article (ref.) M: map data used to model this data |
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Similar structure data | Similarity search - Function & homologyF&H Search |
-Links
-Assembly
Deposited unit |
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1 |
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-Components
#1: Protein | Mass: 164731.344 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Gallus gallus (chicken) / Gene: FANCD2 / Production host: Spodoptera frugiperda (fall armyworm) / References: UniProt: F1NP22 |
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#2: Protein | Mass: 150357.156 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Gallus gallus (chicken) / Gene: FANCI / Production host: Spodoptera frugiperda (fall armyworm) / References: UniProt: B0I564 |
#3: DNA chain | Mass: 13554.697 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) synthetic construct (others) |
#4: DNA chain | Mass: 13541.715 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) synthetic construct (others) |
-Experimental details
-Experiment
Experiment | Method: ELECTRON MICROSCOPY |
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EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction |
-Sample preparation
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Molecular weight |
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Source (natural) |
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Source (recombinant) |
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Buffer solution | pH: 8 | ||||||||||||||||||||||||||||
Buffer component |
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Specimen | Conc.: 0.5 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES | ||||||||||||||||||||||||||||
Specimen support | Grid material: GOLD / Grid type: UltrAuFoil R0.6/1 | ||||||||||||||||||||||||||||
Vitrification | Instrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 277.15 K |
-Electron microscopy imaging
Experimental equipment | Model: Titan Krios / Image courtesy: FEI Company |
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Microscopy | Model: FEI TITAN KRIOS |
Electron gun | Electron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM |
Electron lens | Mode: BRIGHT FIELD / Nominal magnification: 105000 X / Nominal defocus max: 3000 nm / Nominal defocus min: 1500 nm / Cs: 2.7 mm / C2 aperture diameter: 50 µm / Alignment procedure: COMA FREE |
Specimen holder | Cryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER |
Image recording | Average exposure time: 1.5 sec. / Electron dose: 40 e/Å2 / Film or detector model: GATAN K3 (6k x 4k) / Num. of grids imaged: 1 / Num. of real images: 14842 |
EM imaging optics | Energyfilter name: GIF Quantum LS / Energyfilter slit width: 20 eV |
-Processing
EM software |
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CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||||||||||||||||||||||||||||||
Particle selection | Num. of particles selected: 1356378 | ||||||||||||||||||||||||||||||||||||||||||||||||||||
Symmetry | Point symmetry: C1 (asymmetric) | ||||||||||||||||||||||||||||||||||||||||||||||||||||
3D reconstruction | Resolution: 3.53 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 197436 / Num. of class averages: 1 / Symmetry type: POINT | ||||||||||||||||||||||||||||||||||||||||||||||||||||
Atomic model building | Protocol: OTHER / Space: REAL Details: For dsDNA (chain S and T)an ideal B form DNA was generated and fitted into the density using the same softwares used to fit FANCD2 and FANCI chains (chain A and B) into the corresponding density. | ||||||||||||||||||||||||||||||||||||||||||||||||||||
Atomic model building | 3D fitting-ID: 1 / Accession code: 6TNF / Initial refinement model-ID: 1 / PDB-ID: 6TNF / Source name: PDB / Type: experimental model
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