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- EMDB-31160: human RAD51 post-synaptic complex -

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Basic information

Entry
Database: EMDB / ID: EMD-31160
Titlehuman RAD51 post-synaptic complex
Map datacryoEM structure of human RAD51 post-synaptic comples
Sample
  • Complex: Human RAD51 post-synaptic complex
    • Complex: Human RAD51
      • Protein or peptide: DNA repair protein RAD51 homolog 1
    • Complex: DNA
      • DNA: DNA (5'-D(P*TP*TP*TP*TP*TP*TP*TP*TP*T)-3')
      • DNA: DNA (5'-D(P*AP*AP*AP*AP*AP*AP*AP*AP*A)-3')
  • Ligand: MAGNESIUM ION
  • Ligand: PHOSPHOAMINOPHOSPHONIC ACID-ADENYLATE ESTER
KeywordsRecombination protein RAD51 / DNA BINDING PROTEIN / DNA BINDING PROTEIN-DNA complex
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
DNA recombination/repair protein Rad51 / DNA recombination and repair protein, RecA-like / DNA recombination and repair protein Rad51-like, C-terminal / Rad51 / DNA recombination and repair protein RecA, monomer-monomer interface / RecA family profile 2. / DNA recombination and repair protein RecA-like, ATP-binding domain / RecA family profile 1. / DNA repair Rad51/transcription factor NusA, alpha-helical / Helix-hairpin-helix domain ...DNA recombination/repair protein Rad51 / DNA recombination and repair protein, RecA-like / DNA recombination and repair protein Rad51-like, C-terminal / Rad51 / DNA recombination and repair protein RecA, monomer-monomer interface / RecA family profile 2. / DNA recombination and repair protein RecA-like, ATP-binding domain / RecA family profile 1. / DNA repair Rad51/transcription factor NusA, alpha-helical / Helix-hairpin-helix domain / ATPases associated with a variety of cellular activities / AAA+ ATPase domain / P-loop containing nucleoside triphosphate hydrolase
Similarity search - Domain/homology
DNA repair protein RAD51 homolog 1
Similarity search - Component
Biological speciesHomo sapiens (human)
Methodhelical reconstruction / cryo EM / Resolution: 3.98 Å
AuthorsZhao LY / Xu JF
Funding support China, 7 items
OrganizationGrant numberCountry
National Natural Science Foundation of China (NSFC)31700654 China
National Natural Science Foundation of China (NSFC)31825009 China
National Natural Science Foundation of China (NSFC)21877069 China
National Natural Science Foundation of China (NSFC)21922704 China
National Natural Science Foundation of China (NSFC)31570754 China
National Natural Science Foundation of China (NSFC)21625302 China
National Natural Science Foundation of China (NSFC)21933010 China
CitationJournal: Nucleic Acids Res / Year: 2021
Title: Mechanisms of distinctive mismatch tolerance between Rad51 and Dmc1 in homologous recombination.
Authors: Jingfei Xu / Lingyun Zhao / Sijia Peng / Huiying Chu / Rui Liang / Meng Tian / Philip P Connell / Guohui Li / Chunlai Chen / Hong-Wei Wang /
Abstract: Homologous recombination (HR) is a primary DNA double-strand breaks (DSBs) repair mechanism. The recombinases Rad51 and Dmc1 are highly conserved in the RecA family; Rad51 is mainly responsible for ...Homologous recombination (HR) is a primary DNA double-strand breaks (DSBs) repair mechanism. The recombinases Rad51 and Dmc1 are highly conserved in the RecA family; Rad51 is mainly responsible for DNA repair in somatic cells during mitosis while Dmc1 only works during meiosis in germ cells. This spatiotemporal difference is probably due to their distinctive mismatch tolerance during HR: Rad51 does not permit HR in the presence of mismatches, whereas Dmc1 can tolerate certain mismatches. Here, the cryo-EM structures of Rad51-DNA and Dmc1-DNA complexes revealed that the major conformational differences between these two proteins are located in their Loop2 regions, which contain invading single-stranded DNA (ssDNA) binding residues and double-stranded DNA (dsDNA) complementary strand binding residues, stabilizing ssDNA and dsDNA in presynaptic and postsynaptic complexes, respectively. By combining molecular dynamic simulation and single-molecule FRET assays, we identified that V273 and D274 in the Loop2 region of human RAD51 (hRAD51), corresponding to P274 and G275 of human DMC1 (hDMC1), are the key residues regulating mismatch tolerance during strand exchange in HR. This HR accuracy control mechanism provides mechanistic insights into the specific roles of Rad51 and Dmc1 in DNA double-strand break repair and may shed light on the regulatory mechanism of genetic recombination in mitosis and meiosis.
History
DepositionApr 2, 2021-
Header (metadata) releaseMar 16, 2022-
Map releaseMar 16, 2022-
UpdateJun 5, 2024-
Current statusJun 5, 2024Processing site: PDBj / Status: Released

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Structure visualization

Movie
  • Surface view with section colored by density value
  • Surface level: 0.04
  • Imaged by UCSF Chimera
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  • Surface view colored by cylindrical radius
  • Surface level: 0.04
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  • Surface view with fitted model
  • Atomic models: PDB-7eje
  • Surface level: 0.04
  • Imaged by UCSF Chimera
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  • Simplified surface model + fitted atomic model
  • Atomic modelsPDB-7eje
  • Imaged by Jmol
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Movie viewer
Structure viewerEM map:
SurfViewMolmilJmol/JSmol
Supplemental images

emd_31160.png

Downloads & links

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Map

FileDownload / File: emd_31160.map.gz / Format: CCP4 / Size: 64 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
AnnotationcryoEM structure of human RAD51 post-synaptic comples
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
1.31 Å/pix.
x 256 pix.
= 334.336 Å		1.31 Å/pix.
x 256 pix.
= 334.336 Å		1.31 Å/pix.
x 256 pix.
= 334.336 Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 1.306 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.04 / Movie #1: 0.04
Minimum - Maximum-0.07877438 - 0.19099994
Average (Standard dev.)0.00070545764 (±0.007752993)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions256256256
Spacing256256256
CellA=B=C: 334.336 Å
α=β=γ: 90.0 °

CCP4 map header:

modeImage stored as Reals
Å/pix. X/Y/Z1.3061.3061.306
M x/y/z256256256
origin x/y/z0.0000.0000.000
length x/y/z334.336334.336334.336
α/β/γ90.00090.00090.000
start NX/NY/NZ139118109
NX/NY/NZ123164187
MAP C/R/S123
start NC/NR/NS000
NC/NR/NS256256256
D min/max/mean-0.0790.1910.001

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Supplemental data

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Sample components

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Entire : Human RAD51 post-synaptic complex

EntireName: Human RAD51 post-synaptic complex
Components
  • Complex: Human RAD51 post-synaptic complex
    • Complex: Human RAD51
      • Protein or peptide: DNA repair protein RAD51 homolog 1
    • Complex: DNA
      • DNA: DNA (5'-D(P*TP*TP*TP*TP*TP*TP*TP*TP*T)-3')
      • DNA: DNA (5'-D(P*AP*AP*AP*AP*AP*AP*AP*AP*A)-3')
  • Ligand: MAGNESIUM ION
  • Ligand: PHOSPHOAMINOPHOSPHONIC ACID-ADENYLATE ESTER

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Supramolecule #1: Human RAD51 post-synaptic complex

SupramoleculeName: Human RAD51 post-synaptic complex / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#3
Details: 3.98 angstrom cryoEM structure of human RAD51 post-synaptic complex
Source (natural)Organism: Homo sapiens (human)

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Supramolecule #2: Human RAD51

SupramoleculeName: Human RAD51 / type: complex / ID: 2 / Parent: 1 / Macromolecule list: #1

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Supramolecule #3: DNA

SupramoleculeName: DNA / type: complex / ID: 3 / Parent: 1 / Macromolecule list: #2-#3

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Macromolecule #1: DNA repair protein RAD51 homolog 1

MacromoleculeName: DNA repair protein RAD51 homolog 1 / type: protein_or_peptide / ID: 1 / Number of copies: 3 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 37.008074 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString: 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

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Macromolecule #2: DNA (5'-D(P*TP*TP*TP*TP*TP*TP*TP*TP*T)-3')

MacromoleculeName: DNA (5'-D(P*TP*TP*TP*TP*TP*TP*TP*TP*T)-3') / type: dna / ID: 2 / Number of copies: 1 / Classification: DNA
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 2.692778 KDa
SequenceString:
(DT)(DT)(DT)(DT)(DT)(DT)(DT)(DT)(DT)

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Macromolecule #3: DNA (5'-D(P*AP*AP*AP*AP*AP*AP*AP*AP*A)-3')

MacromoleculeName: DNA (5'-D(P*AP*AP*AP*AP*AP*AP*AP*AP*A)-3') / type: dna / ID: 3 / Number of copies: 1 / Classification: DNA
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 2.773904 KDa
SequenceString:
(DA)(DA)(DA)(DA)(DA)(DA)(DA)(DA)(DA)

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Macromolecule #4: MAGNESIUM ION

MacromoleculeName: MAGNESIUM ION / type: ligand / ID: 4 / Number of copies: 3 / Formula: MG
Molecular weightTheoretical: 24.305 Da

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Macromolecule #5: PHOSPHOAMINOPHOSPHONIC ACID-ADENYLATE ESTER

MacromoleculeName: PHOSPHOAMINOPHOSPHONIC ACID-ADENYLATE ESTER / type: ligand / ID: 5 / Number of copies: 3 / Formula: ANP
Molecular weightTheoretical: 506.196 Da
Chemical component information

ChemComp-ANP:
PHOSPHOAMINOPHOSPHONIC ACID-ADENYLATE ESTER / AMP-PNP, energy-carrying molecule analogue*YM

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Experimental details

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Structure determination

Methodcryo EM
Processinghelical reconstruction
Aggregation statefilament

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Sample preparation

BufferpH: 7.5
VitrificationCryogen name: ETHANE

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Image recordingFilm or detector model: GATAN K2 SUMMIT (4k x 4k) / Average electron dose: 48.0 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Final reconstructionApplied symmetry - Helical parameters - Δz: 15.8 Å
Applied symmetry - Helical parameters - Δ&Phi: 56.7 °
Applied symmetry - Helical parameters - Axial symmetry: C1 (asymmetric)
Resolution.type: BY AUTHOR / Resolution: 3.98 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 78276
Startup modelType of model: EMDB MAP
Final angle assignmentType: NOT APPLICABLE

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