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Yorodumi- EMDB-16224: CryoEM structure of the RAD51 nucleoprotein filament in the prese... -
+Open data
-Basic information
Entry | Database: EMDB / ID: EMD-16224 | |||||||||
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Title | CryoEM structure of the RAD51 nucleoprotein filament in the presence of ADP and Ca2+ | |||||||||
Map data | Density modified map | |||||||||
Sample |
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Keywords | DNA repair / Homologous Recombination / DNA-strand exchange / ATPase / DNA BINDING PROTEIN | |||||||||
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 / replication-born double-strand break repair via sister chromatid exchange / cellular response to hydroxyurea / DNA strand exchange activity / lateral element / telomere maintenance via recombination / regulation of DNA damage checkpoint / Impaired BRCA2 binding to PALB2 / single-stranded DNA helicase activity / reciprocal meiotic recombination / 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 / Homologous DNA Pairing and Strand Exchange / 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) / Impaired BRCA2 binding to RAD51 / ATP-dependent DNA damage sensor activity / regulation of double-strand break repair via homologous recombination / replication fork processing / nuclear chromosome / DNA unwinding involved in DNA replication / 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 / meiotic cell cycle / condensed nuclear chromosome / male germ cell nucleus / 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 / single-stranded DNA binding / site of double-strand break / 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 | helical reconstruction / cryo EM / Resolution: 3.6 Å | |||||||||
Authors | Appleby R / Bollschweiler D / Pellegrini L | |||||||||
Funding support | United Kingdom, 1 items
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Citation | Journal: iScience / Year: 2023 Title: A metal ion-dependent mechanism of RAD51 nucleoprotein filament disassembly. Authors: Robert Appleby / Daniel Bollschweiler / Dimitri Y Chirgadze / Luay Joudeh / Luca Pellegrini / Abstract: The RAD51 ATPase polymerizes on single-stranded DNA to form nucleoprotein filaments (NPFs) that are critical intermediates in the reaction of homologous recombination. ATP binding maintains the NPF ...The RAD51 ATPase polymerizes on single-stranded DNA to form nucleoprotein filaments (NPFs) that are critical intermediates in the reaction of homologous recombination. ATP binding maintains the NPF in a competent conformation for strand pairing and exchange. Once strand exchange is completed, ATP hydrolysis licenses the filament for disassembly. Here we show that the ATP-binding site of the RAD51 NPF contains a second metal ion. In the presence of ATP, the metal ion promotes the local folding of RAD51 into the conformation required for DNA binding. The metal ion is absent in the ADP-bound RAD51 filament, that rearranges in a conformation incompatible with DNA binding. The presence of the second metal ion explains how RAD51 couples the nucleotide state of the filament to DNA binding. We propose that loss of the second metal ion upon ATP hydrolysis drives RAD51 dissociation from the DNA and weakens filament stability, contributing to NPF disassembly. | |||||||||
History |
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-Structure visualization
Supplemental images |
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-Downloads & links
-EMDB archive
Map data | emd_16224.map.gz | 3.1 MB | EMDB map data format | |
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Header (meta data) | emd-16224-v30.xml emd-16224.xml | 17.4 KB 17.4 KB | Display Display | EMDB header |
Images | emd_16224.png | 87.3 KB | ||
Others | emd_16224_half_map_1.map.gz emd_16224_half_map_2.map.gz | 23.5 MB 23.5 MB | ||
Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-16224 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-16224 | HTTPS FTP |
-Related structure data
Related structure data | 8bscMC 8bq2C 8br2C C: citing same article (ref.) M: atomic model generated by this map |
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Similar structure data | Similarity search - Function & homologyF&H Search |
-Links
EMDB pages | EMDB (EBI/PDBe) / EMDataResource |
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Related items in Molecule of the Month |
-Map
File | Download / File: emd_16224.map.gz / Format: CCP4 / Size: 3.3 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||
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Annotation | Density modified map | ||||||||||||||||||||||||||||||||||||
Projections & slices | Image control
Images are generated by Spider. generated in cubic-lattice coordinate | ||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 1.304 Å | ||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
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-Supplemental data
-Half map: Half map
File | emd_16224_half_map_1.map | ||||||||||||
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Annotation | Half map | ||||||||||||
Projections & Slices |
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Density Histograms |
-Half map: Half map
File | emd_16224_half_map_2.map | ||||||||||||
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Annotation | Half map | ||||||||||||
Projections & Slices |
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Density Histograms |
-Sample components
-Entire : Filament of human RAD51 bound to ADP and Ca2+
Entire | Name: Filament of human RAD51 bound to ADP and Ca2+ |
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Components |
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-Supramolecule #1: Filament of human RAD51 bound to ADP and Ca2+
Supramolecule | Name: Filament of human RAD51 bound to ADP and Ca2+ / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1 Details: Sample was prepared by mixing RAD51, dsDNA, ADP in Ca2+ buffer |
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Source (natural) | Organism: Homo sapiens (human) |
-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: 7 / Enantiomer: LEVO |
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Source (natural) | Organism: Homo sapiens (human) |
Molecular weight | Theoretical: 37.009125 KDa |
Recombinant expression | Organism: Escherichia coli (E. coli) |
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 ETRICKIYDS PCL PEAEAM FAINADGVGD AKD |
-Macromolecule #2: CALCIUM ION
Macromolecule | Name: CALCIUM ION / type: ligand / ID: 2 / Number of copies: 7 / Formula: CA |
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Molecular weight | Theoretical: 40.078 Da |
-Macromolecule #3: ADENOSINE-5'-DIPHOSPHATE
Macromolecule | Name: ADENOSINE-5'-DIPHOSPHATE / type: ligand / ID: 3 / Number of copies: 7 / Formula: ADP |
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Molecular weight | Theoretical: 427.201 Da |
Chemical component information | ChemComp-ADP: |
-Experimental details
-Structure determination
Method | cryo EM |
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Processing | helical reconstruction |
Aggregation state | filament |
-Sample preparation
Buffer | pH: 7.5 |
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Grid | Model: UltrAuFoil R1.2/1.3 / Material: GOLD / Mesh: 300 / Pretreatment - Type: GLOW DISCHARGE |
Vitrification | Cryogen name: ETHANE / Instrument: FEI VITROBOT MARK IV |
-Electron microscopy
Microscope | FEI TITAN KRIOS |
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Electron beam | Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN |
Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELDBright-field microscopy / Nominal defocus max: 2.5 µm / Nominal defocus min: 0.9 µm / Nominal magnification: 130000 |
Sample stage | Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER / Cooling holder cryogen: NITROGEN |
Image recording | Film or detector model: GATAN K3 (6k x 4k) / Digitization - Dimensions - Width: 5760 pixel / Digitization - Dimensions - Height: 4092 pixel / Number grids imaged: 1 / Number real images: 9214 / Average exposure time: 1.34 sec. / Average electron dose: 56.36 e/Å2 Details: Images were collected in movie mode at 50 per movie. |
Experimental equipment | Model: Titan Krios / Image courtesy: FEI Company |
-Image processing
Segment selection | Number selected: 1527085 / Software - Name: RELION (ver. 3.1) |
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Startup model | Type of model: OTHER / Details: An initial 3D model was generated in Relion 3.1 |
Final angle assignment | Type: NOT APPLICABLE / Software - Name: RELION (ver. 3.1) |
Final reconstruction | Applied symmetry - Helical parameters - Δz: 18.6 Å Applied symmetry - Helical parameters - Δ&Phi: 53.1 ° Applied symmetry - Helical parameters - Axial symmetry: C1 (asymmetric) Resolution.type: BY AUTHOR / Resolution: 3.6 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: RELION (ver. 3.1) / Number images used: 40481 |
-Atomic model buiding 1
Refinement | Space: REAL / Protocol: OTHER |
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Output model | PDB-8bsc: |