+Open data
-Basic information
Entry | Database: PDB / ID: 5jzc | |||||||||
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Title | helical filament | |||||||||
Components | DNA repair protein RAD51 homolog 1 | |||||||||
Keywords | DNA BINDING PROTEIN / cryoEM DNA repair recombinase / CELL CYCLE | |||||||||
Function / homology | Function and homology information presynaptic intermediate filament cytoskeleton / mitotic recombination-dependent replication fork processing / chromosome organization involved in meiotic cell cycle / cellular response to camptothecin / DNA recombinase assembly / telomere maintenance via telomere lengthening / positive regulation of DNA ligation / double-strand break repair involved in meiotic recombination / nuclear ubiquitin ligase complex / mitotic recombination ...presynaptic intermediate filament cytoskeleton / mitotic recombination-dependent replication fork processing / chromosome organization involved in meiotic cell cycle / cellular response to camptothecin / DNA recombinase assembly / telomere maintenance via telomere lengthening / positive regulation of DNA ligation / double-strand break repair involved in meiotic recombination / nuclear ubiquitin ligase complex / mitotic recombination / DNA strand invasion / cellular response to hydroxyurea / DNA strand exchange activity / lateral element / replication-born double-strand break repair via sister chromatid exchange / telomere maintenance via recombination / regulation of DNA damage checkpoint / Impaired BRCA2 binding to PALB2 / single-stranded DNA helicase activity / reciprocal meiotic recombination / 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 / ATP-dependent DNA damage sensor activity / HDR through Single Strand Annealing (SSA) / Impaired BRCA2 binding to RAD51 / regulation of double-strand break repair via homologous recombination / nuclear chromosome / DNA unwinding involved in DNA replication / replication fork processing / Transcriptional Regulation by E2F6 / Presynaptic phase of homologous DNA pairing and strand exchange / ATP-dependent activity, acting on DNA / interstrand cross-link repair / DNA polymerase binding / condensed chromosome / condensed nuclear chromosome / male germ cell nucleus / meiotic cell cycle / cellular response to ionizing radiation / double-strand break repair via homologous recombination / regulation of protein phosphorylation / HDR through Homologous Recombination (HRR) / PML body / Meiotic recombination / site of double-strand break / single-stranded DNA binding / double-stranded DNA binding / DNA recombination / chromosome, telomeric region / mitochondrial matrix / DNA repair / centrosome / DNA damage response / chromatin binding / chromatin / nucleolus / perinuclear region of cytoplasm / enzyme binding / ATP hydrolysis activity / protein-containing complex / mitochondrion / nucleoplasm / ATP binding / identical protein binding / nucleus / cytosol / cytoplasm Similarity search - Function | |||||||||
Biological species | Homo sapiens (human) | |||||||||
Method | ELECTRON MICROSCOPY / helical reconstruction / Resolution: 4.2 Å | |||||||||
Authors | Short, J. / Liu, Y. | |||||||||
Citation | Journal: Nucleic Acids Res / Year: 2016 Title: High-resolution structure of the presynaptic RAD51 filament on single-stranded DNA by electron cryo-microscopy. Authors: Judith M Short / Yang Liu / Shaoxia Chen / Neelesh Soni / Mallur S Madhusudhan / Mahmud K K Shivji / Ashok R Venkitaraman / Abstract: Homologous DNA recombination (HR) by the RAD51 recombinase enables error-free DNA break repair. To execute HR, RAD51 first forms a presynaptic filament on single-stranded (ss) DNA, which catalyses ...Homologous DNA recombination (HR) by the RAD51 recombinase enables error-free DNA break repair. To execute HR, RAD51 first forms a presynaptic filament on single-stranded (ss) DNA, which catalyses pairing with homologous double-stranded (ds) DNA. Here, we report a structure for the presynaptic human RAD51 filament at 3.5-5.0Å resolution using electron cryo-microscopy. RAD51 encases ssDNA in a helical filament of 103Å pitch, comprising 6.4 protomers per turn, with a rise of 16.1Å and a twist of 56.2°. Inter-protomer distance correlates with rotation of an α-helical region in the core catalytic domain that is juxtaposed to ssDNA, suggesting how the RAD51-DNA interaction modulates protomer spacing and filament pitch. We map Fanconi anaemia-like disease-associated RAD51 mutations, clarifying potential phenotypes. We predict binding sites on the presynaptic filament for two modules present in each BRC repeat of the BRCA2 tumour suppressor, a critical HR mediator. Structural modelling suggests that changes in filament pitch mask or expose one binding site with filament-inhibitory potential, rationalizing the paradoxical ability of the BRC repeats to either stabilize or inhibit filament formation at different steps during HR. Collectively, our findings provide fresh insight into the structural mechanism of HR and its dysregulation in human disease. | |||||||||
History |
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-Structure visualization
Movie |
Movie viewer |
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Structure viewer | Molecule: MolmilJmol/JSmol |
-Downloads & links
-Download
PDBx/mmCIF format | 5jzc.cif.gz | 358.9 KB | Display | PDBx/mmCIF format |
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PDB format | pdb5jzc.ent.gz | 257 KB | Display | PDB format |
PDBx/mmJSON format | 5jzc.json.gz | Tree view | PDBx/mmJSON format | |
Others | Other downloads |
-Validation report
Summary document | 5jzc_validation.pdf.gz | 1.1 MB | Display | wwPDB validaton report |
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Full document | 5jzc_full_validation.pdf.gz | 1.2 MB | Display | |
Data in XML | 5jzc_validation.xml.gz | 62.6 KB | Display | |
Data in CIF | 5jzc_validation.cif.gz | 94.3 KB | Display | |
Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/jz/5jzc ftp://data.pdbj.org/pub/pdb/validation_reports/jz/5jzc | HTTPS FTP |
-Related structure data
Related structure data | 8183MC 5np7C M: map data used to model this data C: citing same article (ref.) |
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Similar structure data |
-Links
-Assembly
Deposited unit |
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-Components
#1: Protein | Mass: 37009.125 Da / Num. of mol.: 7 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Gene: RAD51, RAD51A, RECA / Production host: Escherichia coli BL21(DE3) (bacteria) / References: UniProt: Q06609 |
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-Experimental details
-Experiment
Experiment | Method: ELECTRON MICROSCOPY |
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EM experiment | Aggregation state: FILAMENT / 3D reconstruction method: helical reconstruction |
-Sample preparation
Component | Name: filament / Type: COMPLEX / Entity ID: all / Source: RECOMBINANT |
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Source (natural) | Organism: Homo sapiens (human) |
Source (recombinant) | Organism: Escherichia coli BL21 (bacteria) / Plasmid: pET11d |
Buffer solution | pH: 7 |
Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: NO |
-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: DIFFRACTION |
Image recording | Electron dose: 20 e/Å2 / Film or detector model: FEI FALCON II (4k x 4k) / Num. of real images: 500 |
Image scans | Sampling size: 14 µm / Width: 4096 / Height: 4096 |
-Processing
Software | Name: REFMAC / Version: 5.8.0151 / Classification: refinement | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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EM software |
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CTF correction | Type: NONE | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Helical symmerty | Angular rotation/subunit: 56.2 ° / Axial rise/subunit: 16.05 Å / Axial symmetry: C1 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3D reconstruction | Resolution: 4.2 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 69000 / Symmetry type: HELICAL | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Refinement | Resolution: 4.2→176 Å / Cor.coef. Fo:Fc: 0.962 / SU B: 43.53 / SU ML: 0.542 / ESU R: 1.013 Stereochemistry target values: MAXIMUM LIKELIHOOD WITH PHASES
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Solvent computation | Solvent model: PARAMETERS FOR MASK CACLULATION | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Displacement parameters | Biso mean: 94.574 Å2
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Refinement step | Cycle: 1 / Total: 11942 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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