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Open data
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Basic information
Entry | Database: EMDB / ID: EMD-9567 | |||||||||||||||||||||
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Title | Human RAD51 post-synaptic complexes | |||||||||||||||||||||
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![]() | DNA repair / ATPase / homologous recombination / DNA BINDING PROTEIN-DNA complex | |||||||||||||||||||||
Function / homology | ![]() presynaptic intermediate filament cytoskeleton / response to glucoside / 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 / double-strand break repair involved in meiotic recombination / nuclear ubiquitin ligase complex / cellular response to cisplatin ...presynaptic intermediate filament cytoskeleton / response to glucoside / 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 / double-strand break repair involved in meiotic recombination / nuclear ubiquitin ligase complex / cellular response to cisplatin / DNA strand invasion / cellular response to hydroxyurea / mitotic recombination / lateral element / DNA strand exchange activity / replication-born double-strand break repair via sister chromatid exchange / telomere maintenance via recombination / Impaired BRCA2 binding to PALB2 / regulation of DNA damage checkpoint / 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 / HDR through Single Strand Annealing (SSA) / ATP-dependent DNA damage sensor activity / regulation of double-strand break repair via homologous recombination / nuclear chromosome / Impaired BRCA2 binding to RAD51 / Transcriptional Regulation by E2F6 / replication fork processing / Presynaptic phase of homologous DNA pairing and strand exchange / ATP-dependent activity, acting on DNA / response to X-ray / interstrand cross-link repair / condensed chromosome / DNA polymerase binding / male germ cell nucleus / condensed nuclear chromosome / meiotic cell cycle / cellular response to ionizing radiation / double-strand break repair via homologous recombination / cellular response to gamma radiation / PML body / Meiotic recombination / HDR through Homologous Recombination (HRR) / response to toxic substance / single-stranded DNA binding / site of double-strand break / double-stranded DNA binding / DNA recombination / chromosome, telomeric region / mitochondrial matrix / response to xenobiotic stimulus / DNA repair / centrosome / DNA damage response / chromatin binding / chromatin / nucleolus / perinuclear region of cytoplasm / enzyme binding / protein-containing complex / ATP hydrolysis activity / mitochondrion / nucleoplasm / ATP binding / identical protein binding / nucleus / cytosol / cytoplasm Similarity search - Function | |||||||||||||||||||||
Biological species | ![]() | |||||||||||||||||||||
Method | helical reconstruction / cryo EM / Resolution: 4.5 Å | |||||||||||||||||||||
![]() | Xu J / Zhao L | |||||||||||||||||||||
Funding support | ![]() ![]()
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![]() | ![]() Title: Cryo-EM structures of human RAD51 recombinase filaments during catalysis of DNA-strand exchange. Authors: Jingfei Xu / Lingyun Zhao / Yuanyuan Xu / Weixing Zhao / Patrick Sung / Hong-Wei Wang / ![]() ![]() Abstract: The central step in eukaryotic homologous recombination (HR) is ATP-dependent DNA-strand exchange mediated by the Rad51 recombinase. In this process, Rad51 assembles on single-stranded DNA (ssDNA) ...The central step in eukaryotic homologous recombination (HR) is ATP-dependent DNA-strand exchange mediated by the Rad51 recombinase. In this process, Rad51 assembles on single-stranded DNA (ssDNA) and generates a helical filament that is able to search for and invade homologous double-stranded DNA (dsDNA), thus leading to strand separation and formation of new base pairs between the initiating ssDNA and the complementary strand within the duplex. Here, we used cryo-EM to solve the structures of human RAD51 in complex with DNA molecules, in presynaptic and postsynaptic states, at near-atomic resolution. Our structures reveal both conserved and distinct structural features of the human RAD51-DNA complexes compared with their prokaryotic counterpart. Notably, we also captured the structure of an arrested synaptic complex. Our results provide new insight into the molecular mechanisms of the DNA homology search and strand-exchange processes. | |||||||||||||||||||||
History |
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Structure visualization
Movie |
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Structure viewer | EM map: ![]() ![]() ![]() |
Supplemental images |
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Downloads & links
-EMDB archive
Map data | ![]() | 56.7 MB | ![]() | |
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Header (meta data) | ![]() ![]() | 18.4 KB 18.4 KB | Display Display | ![]() |
Images | ![]() | 96.8 KB | ||
Filedesc metadata | ![]() | 6.5 KB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 5h1cMC ![]() 9566C ![]() 9568C ![]() 5h1bC C: citing same article ( M: atomic model generated by this map |
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Similar structure data |
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Links
EMDB pages | ![]() ![]() |
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Related items in Molecule of the Month |
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Map
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Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 1.306 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
CCP4 map header:
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-Supplemental data
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Sample components
-Entire : Human RAD51 post-synaptic complex
Entire | Name: Human RAD51 post-synaptic complex |
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Components |
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-Supramolecule #1: Human RAD51 post-synaptic complex
Supramolecule | Name: Human RAD51 post-synaptic complex / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#3 |
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Molecular weight | Theoretical: 24.18 kDa/nm |
-Supramolecule #2: Human RAD51
Supramolecule | Name: Human RAD51 / type: complex / ID: 2 / Parent: 1 / Macromolecule list: #1 |
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-Supramolecule #3: DNA
Supramolecule | Name: DNA / type: complex / ID: 3 / Parent: 1 / Macromolecule list: #2 |
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-Supramolecule #4: DNA
Supramolecule | Name: DNA / type: complex / ID: 4 / Parent: 1 / Macromolecule list: #3 |
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-Macromolecule #1: DNA repair protein RAD51 homolog 1
Macromolecule | Name: DNA repair protein RAD51 homolog 1 / type: protein_or_peptide / ID: 1 / Number of copies: 3 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 37.008074 KDa |
Recombinant expression | Organism: ![]() ![]() |
Sequence | String: MAMQMQLEAN ADTSVEEESF GPQPISRLEQ CGINANDVKK LEEAGFHTVE AVAYAPKKEL INIKGISEAK ADKILAEAAK LVPMGFTTA TEFHQRRSEI IQITTGSKEL DKLLQGGIET GSITEMFGEF RTGKTQICHT LAVTCQLPID RGGGEGKAMY I DTEGTFRP ...String: MAMQMQLEAN ADTSVEEESF GPQPISRLEQ CGINANDVKK LEEAGFHTVE AVAYAPKKEL INIKGISEAK ADKILAEAAK LVPMGFTTA TEFHQRRSEI IQITTGSKEL DKLLQGGIET GSITEMFGEF RTGKTQICHT LAVTCQLPID RGGGEGKAMY I DTEGTFRP ERLLAVAERY GLSGSDVLDN VAYARAFNTD HQTQLLYQAS AMMVESRYAL LIVDSATALY RTDYSGRGEL SA RQMHLAR FLRMLLRLAD EFGVAVVITN QVVAQVDGAA MFAADPKKPI GGNIIAHAST TRLYLRKGRG ETRICQIYDS PCL PEAEAM FAINADGVGD AKD UniProtKB: DNA repair protein RAD51 homolog 1 |
-Macromolecule #2: DNA (5'-D(P*TP*TP*TP*TP*TP*TP*TP*TP*T)-3')
Macromolecule | Name: DNA (5'-D(P*TP*TP*TP*TP*TP*TP*TP*TP*T)-3') / type: dna / ID: 2 / Number of copies: 1 / Classification: DNA |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 2.692778 KDa |
Sequence | String: (DT)(DT)(DT)(DT)(DT)(DT)(DT)(DT)(DT) |
-Macromolecule #3: DNA (5'-D(P*AP*AP*AP*AP*AP*AP*AP*AP*A)-3')
Macromolecule | Name: DNA (5'-D(P*AP*AP*AP*AP*AP*AP*AP*AP*A)-3') / type: dna / ID: 3 / Number of copies: 1 / Classification: DNA |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 2.773904 KDa |
Sequence | String: (DA)(DA)(DA)(DA)(DA)(DA)(DA)(DA)(DA) |
-Macromolecule #4: MAGNESIUM ION
Macromolecule | Name: MAGNESIUM ION / type: ligand / ID: 4 / Number of copies: 3 / Formula: MG |
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Molecular weight | Theoretical: 24.305 Da |
-Macromolecule #5: PHOSPHOAMINOPHOSPHONIC ACID-ADENYLATE ESTER
Macromolecule | Name: PHOSPHOAMINOPHOSPHONIC ACID-ADENYLATE ESTER / type: ligand / ID: 5 / Number of copies: 3 / Formula: ANP |
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Molecular weight | Theoretical: 506.196 Da |
Chemical component information | ![]() ChemComp-ANP: |
-Experimental details
-Structure determination
Method | cryo EM |
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![]() | helical reconstruction |
Aggregation state | filament |
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Sample preparation
Concentration | 0.075 mg/mL |
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Buffer | pH: 7.5 Details: 25mM Tris-HCl, pH 7.5, 50mM KCl, 1mM dithiothreitol, 1mM AMP-PNP and 2mM MgCl2 |
Grid | Model: Quantifoil R1.2/1.3 / Material: COPPER / Mesh: 300 / Support film - Material: CARBON / Support film - topology: HOLEY / Support film - Film thickness: 20 / Pretreatment - Type: PLASMA CLEANING / Pretreatment - Time: 30 sec. / Pretreatment - Atmosphere: AIR / Pretreatment - Pressure: 101.325 kPa |
Vitrification | Cryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 289 K / Instrument: FEI VITROBOT MARK IV |
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Electron microscopy
Microscope | FEI TITAN KRIOS |
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Image recording | Film or detector model: GATAN K2 SUMMIT (4k x 4k) / Detector mode: SUPER-RESOLUTION / Digitization - Dimensions - Width: 7676 pixel / Digitization - Dimensions - Height: 7420 pixel / Digitization - Frames/image: 3-14 / Number grids imaged: 2 / Number real images: 528 / Average exposure time: 8.0 sec. / Average electron dose: 50.0 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: ![]() |
Electron optics | C2 aperture diameter: 70.0 µm / Calibrated defocus max: 2.5 µm / Calibrated defocus min: 1.5 µm / Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Cs: 2.7 mm / Nominal defocus max: 2.5 µm / Nominal defocus min: 1.5 µm |
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Image processing
Final reconstruction | Number classes used: 78 Applied symmetry - Helical parameters - Δz: 15.8 Å Applied symmetry - Helical parameters - Δ&Phi: 56.18 ° Applied symmetry - Helical parameters - Axial symmetry: C1 (asymmetric) Algorithm: BACK PROJECTION / Resolution.type: BY AUTHOR / Resolution: 4.5 Å / Resolution method: FSC 0.143 CUT-OFF Software:
Number images used: 30194 | ||||||
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Segment selection | Number selected: 41146 | ||||||
Startup model | Type of model: OTHER Details: Randomly assigned euler angle for each segment and using back projection to generate initial model. | ||||||
Final angle assignment | Type: NOT APPLICABLE Software:
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