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Protein Structures and Oligomeric States

Enter a protein name, UniProt accession or PDB ID. Name searches ask you to confirm the protein identity before related structures are queried.

Current Protein Identity：Q06609 New Search
51PDB entries
52Biological assembly
275chain/assembly records
Main Difference Dimensions in This Set
Different construct Different mutation/modification Different assembly state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics

Difference tags compare only the current result set; every original PDB and assembly record remains separate.

Related-Structure Differences

Each row represents one biological assembly in one PDB entry; multiple monomers of the same protein are listed separately.

PDB Entry Assembly / Oligomeric State Construct Mutations and Modifications Ligands, Ions and Non-polymers Experimental Method Experimental Conditions Structure Quality
1B22 RAD51 (N-TERMINAL DOMAIN) Deposited 1998-12-04 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 1–114（114 aa） Fragment：N-TERMINAL DOMAIN
Not recorded No recorded non-water small molecule SOLUTION NMR
NMR measurement conditions pH 6.5；303 K；Ionic strength (raw mmCIF value) 100mM NACL；Pressure 1
Resolution not provided
1N0W Crystal structure of a RAD51-BRCA2 BRC repeat complex Deposited 2002-10-15 Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain A 97–339（243 aa） Fragment：ATPase domain
Non-standard monomer：Yes (specific site not provided by mmCIF) MG MAGNESIUM ION × 1 CL CHLORIDE ION × 1 EDO 1,2-ETHANEDIOL × 5 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.2；291 K；ETHYLENE GLYCOL, pH 7.2, VAPOR DIFFUSION, HANGING DROP, temperature 291K
Resolution 1.70 Å R-free 0.206
5H1B Human RAD51 presynaptic complex Deposited 2016-10-08 Assembly 1 Protein–DNA Homooligomer；Protein × 3 PDB declaration: tetrameric（4） Consistent with all polymers
Chain A 1–339（339 aa）
Chain B 1–339（339 aa）
Chain C 1–339（339 aa）
Mutation：K313Q Mutation：K313Q Mutation：K313Q ANP PHOSPHOAMINOPHOSPHONIC ACID-ADENYLATE ESTER × 3 MG MAGNESIUM ION × 3 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5；25mM Tris-HCl, pH 7.5, 50mM KCl, 1mM dithiothreitol, 1mM AMP-PNP and 2mM MgCl2
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.40 Å
5H1C Human RAD51 post-synaptic complexes Deposited 2016-10-08 Assembly 1 Protein–DNA Homooligomer；Protein × 3 PDB declaration: pentameric（5） Consistent with all polymers
Chain A 1–339（339 aa）
Chain B 1–339（339 aa）
Chain C 1–339（339 aa）
Not recorded MG MAGNESIUM ION × 3 ANP PHOSPHOAMINOPHOSPHONIC ACID-ADENYLATE ESTER × 3 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5；25mM Tris-HCl, pH 7.5, 50mM KCl, 1mM dithiothreitol, 1mM AMP-PNP and 2mM MgCl2
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.50 Å
5JZC helical filament Deposited 2016-05-16 Assembly 1 Protein homooligomer Homooligomer；Protein × 7 PDB declaration: heptameric（7） Consistent with protein count
Chain A 1–339（339 aa）
Chain B 1–339（339 aa）
Chain C 1–339（339 aa）
Chain D 1–339（339 aa）
Chain E 1–339（339 aa）
Chain F 1–339（339 aa）
Chain G 1–339（339 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7
Resolution 4.20 Å
5NP7 CryoEM structure of Human Rad51 on single-stranded DNA to 4.2A resolution. Deposited 2017-04-13 Assembly 1 Protein homooligomer Homooligomer；Protein × 7 PDB declaration: heptameric（7） Consistent with protein count
Chain A 1–339（339 aa）
Chain B 1–339（339 aa）
Chain C 1–339（339 aa）
Chain D 1–339（339 aa）
Chain E 1–339（339 aa）
Chain F 1–339（339 aa）
Chain G 1–339（339 aa）
Not recorded ANP PHOSPHOAMINOPHOSPHONIC ACID-ADENYLATE ESTER × 7 ELECTRON MICROSCOPY
cryo-EM buffer pH 7
cryo-EM vitrification conditions Cryogen NITROGEN
Resolution 4.20 Å
5NWL Crystal structure of a human RAD51-ATP filament. Deposited 2017-05-06 Assembly 1 Protein homooligomer Homooligomer；Protein × 7 PDB declaration: heptameric（7） Consistent with protein count
Chain A 1–339（339 aa）
Chain B 1–339（339 aa）
Chain C 1–339（339 aa）
Chain D 1–339（339 aa）
Chain E 1–339（339 aa）
Chain F 1–339（339 aa）
Chain G 1–339（339 aa）
Not recorded MG MAGNESIUM ION × 7 ATP ADENOSINE-5'-TRIPHOSPHATE × 7 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；291 K；0.1 MES pH 5.2 MPD
Resolution 3.93 Å R-free 0.317
5NWL Crystal structure of a human RAD51-ATP filament. Deposited 2017-05-06 Assembly 2 Protein homooligomer Homooligomer；Protein × 7 PDB declaration: heptameric（7） Consistent with protein count
Chain H 1–339（339 aa）
Chain I 1–339（339 aa）
Chain J 1–339（339 aa）
Chain K 1–339（339 aa）
Chain L 1–339（339 aa）
Chain M 1–339（339 aa）
Chain N 1–339（339 aa）
Not recorded MG MAGNESIUM ION × 7 ATP ADENOSINE-5'-TRIPHOSPHATE × 7 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；291 K；0.1 MES pH 5.2 MPD
Resolution 3.93 Å R-free 0.317
7C9A Human RAD51 post-synaptic complexes mutant (V273P, D274G) Deposited 2020-06-05 Assembly 1 Protein–DNA Homooligomer；Protein × 3 PDB declaration: pentameric（5） Consistent with all polymers
Chain A 1–339（339 aa）
Chain B 1–339（339 aa）
Chain C 1–339（339 aa）
Mutation：V273P, D274G Mutation：V273P, D274G Mutation：V273P, D274G CA CALCIUM ION × 3 ANP PHOSPHOAMINOPHOSPHONIC ACID-ADENYLATE ESTER × 3 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5；25 mM Tris-HCl, pH 7.5, 50 mM KCl and 1 mM dithiothreitol) containing 2 mM AMP-PNP and 5 mM CaCl2
cryo-EM vitrification conditions Cryogen ETHANE；The grids were blotted for 1 sec at 22 degree C with 100% relative humidity and plunge-frozen in liquid ethane cooled by liquid nitrogen using a Vitrobot Mark IV (Thermo Fisher).
Resolution 3.43 Å
7EJC human RAD51 presynaptic complex Deposited 2021-04-02 Assembly 1 Protein–DNA Homooligomer；Protein × 3 PDB declaration: tetrameric（4） Consistent with all polymers
Chain A 1–339（339 aa）
Chain B 1–339（339 aa）
Chain C 1–339（339 aa）
Not recorded MG MAGNESIUM ION × 3 J46 4-bromanyl-N-(4-bromophenyl)-3-[(phenylmethyl)sulfamoyl]benzamide × 3 ANP PHOSPHOAMINOPHOSPHONIC ACID-ADENYLATE ESTER × 3 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.97 Å
7EJE human RAD51 post-synaptic complex Deposited 2021-04-02 Assembly 1 Protein–DNA Homooligomer；Protein × 3 PDB declaration: pentameric（5） Consistent with all polymers
Chain A 1–339（339 aa）
Chain B 1–339（339 aa）
Chain C 1–339（339 aa）
Not recorded MG MAGNESIUM ION × 3 ANP PHOSPHOAMINOPHOSPHONIC ACID-ADENYLATE ESTER × 3 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.98 Å
8BQ2 CryoEM structure of the pre-synaptic RAD51 nucleoprotein filament in the presence of ATP and Ca2+ Deposited 2022-11-18 Assembly 1 Protein–DNA Homooligomer；Protein × 9 PDB declaration: decameric（10） Consistent with all polymers
Chain A 1–339（339 aa）
Chain B 1–339（339 aa）
Chain C 1–339（339 aa）
Chain D 1–339（339 aa）
Chain E 1–339（339 aa）
Chain F 1–339（339 aa）
Chain G 1–339（339 aa）
Chain H 1–339（339 aa）
Chain I 1–339（339 aa）
Not recorded ATP ADENOSINE-5'-TRIPHOSPHATE × 9 CA CALCIUM ION × 18 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.80 Å
8BR2 CryoEM structure of the post-synaptic RAD51 nucleoprotein filament in the presence of ATP and Ca2+ Deposited 2022-11-22 Assembly 1 Protein–DNA Homooligomer；Protein × 6 PDB declaration: octameric（8） Consistent with all polymers
Chain A 1–339（339 aa）
Chain B 1–339（339 aa）
Chain C 1–339（339 aa）
Chain D 1–339（339 aa）
Chain E 1–339（339 aa）
Chain F 1–339（339 aa）
Not recorded CA CALCIUM ION × 12 ATP ADENOSINE-5'-TRIPHOSPHATE × 6 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.90 Å
8BSC CryoEM structure of the RAD51 nucleoprotein filament in the presence of ADP and Ca2+ Deposited 2022-11-24 Assembly 1 Protein homooligomer Homooligomer；Protein × 7 PDB declaration: heptameric（7） Consistent with protein count
Chain A 1–339（339 aa）
Chain B 1–339（339 aa）
Chain C 1–339（339 aa）
Chain D 1–339（339 aa）
Chain E 1–339（339 aa）
Chain F 1–339（339 aa）
Chain G 1–339（339 aa）
Not recorded CA CALCIUM ION × 7 ADP ADENOSINE-5'-DIPHOSPHATE × 7 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.60 Å
8GYK CryoEM structure of the RAD51_ADP filament Deposited 2022-09-22 Assembly 1 Protein homooligomer Homooligomer；Protein × 8 PDB declaration: octameric（8） Consistent with protein count
Chain A 1–339（339 aa）
Chain B 1–339（339 aa）
Chain C 1–339（339 aa）
Chain D 1–339（339 aa）
Chain E 1–339（339 aa）
Chain F 1–339（339 aa）
Chain G 1–339（339 aa）
Chain H 1–339（339 aa）
Not recorded ADP ADENOSINE-5'-DIPHOSPHATE × 8 MG MAGNESIUM ION × 8 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.14 Å
8JND The cryo-EM structure of the nonameric RAD51 ring bound to the nucleosome with the linker DNA binding Deposited 2023-06-06 Assembly 1 Protein–DNA Heteromer；Protein × 17 PDB declaration: 19-meric（19） Consistent with all polymers
Chain K 1–339（339 aa）
Chain L 1–339（339 aa）
Chain M 1–339（339 aa）
Chain N 1–339（339 aa）
Chain O 1–339（339 aa）
Chain P 1–339（339 aa）
Chain Q 1–339（339 aa）
Chain R 1–339（339 aa）
Chain S 1–339（339 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.66 Å
8JNE The cryo-EM structure of the decameric RAD51 ring bound to the nucleosome without the linker DNA binding Deposited 2023-06-06 Assembly 1 Protein–DNA Heteromer；Protein × 18 PDB declaration: 20-meric（20） Consistent with all polymers
Chain K 1–339（339 aa）
Chain L 1–339（339 aa）
Chain M 1–339（339 aa）
Chain N 1–339（339 aa）
Chain O 1–339（339 aa）
Chain P 1–339（339 aa）
Chain Q 1–339（339 aa）
Chain R 1–339（339 aa）
Chain S 1–339（339 aa）
Chain T 1–339（339 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.68 Å
8JNF The cryo-EM structure of the RAD51 filament bound to the nucleosome Deposited 2023-06-06 Assembly 1 Protein–DNA Heteromer；Protein × 14 PDB declaration: 16-meric（16） Consistent with all polymers
Chain K 1–339（339 aa）
Chain L 1–339（339 aa）
Chain M 1–339（339 aa）
Chain N 1–339（339 aa）
Chain O 1–339（339 aa）
Chain P 1–339（339 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 6.91 Å
8PBC RAD51 filament on ssDNA bound by the BRCA2 c-terminus Deposited 2023-06-09 Assembly 1 Protein–DNA Heteromer；Protein × 21 PDB declaration: 22-meric（22） Consistent with all polymers
Chain A 1–339（339 aa）
Chain B 1–339（339 aa）
Chain C 1–339（339 aa）
Chain D 1–339（339 aa）
Chain E 1–339（339 aa）
Chain F 1–339（339 aa）
Chain G 1–339（339 aa）
Chain H 1–339（339 aa）
Chain I 1–339（339 aa）
Chain J 1–339（339 aa）
Chain K 1–339（339 aa）
Not recorded ATP ADENOSINE-5'-TRIPHOSPHATE × 11 CA CALCIUM ION × 22 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.61 Å
8PBD RAD51 filament on dsDNA bound by the BRCA2 c-terminus Deposited 2023-06-09 Assembly 1 Protein–DNA Heteromer；Protein × 19 PDB declaration: 21-meric（21） Consistent with all polymers
Chain A 1–339（339 aa）
Chain B 1–339（339 aa）
Chain C 1–339（339 aa）
Chain D 1–339（339 aa）
Chain E 1–339（339 aa）
Chain F 1–339（339 aa）
Chain G 1–339（339 aa）
Chain H 1–339（339 aa）
Chain I 1–339（339 aa）
Chain J 1–339（339 aa）
Not recorded ATP ADENOSINE-5'-TRIPHOSPHATE × 10 CA CALCIUM ION × 20 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.83 Å
8R64 Cryo-EM structure of the FIGNL1 AAA hexamer bound to RAD51 Deposited 2023-11-20 Assembly 1 Protein heterocomplex Heteromer；Protein × 7 PDB declaration: heptameric（7） Consistent with protein count
Chain G 1–339（339 aa）
Not recorded MG MAGNESIUM ION × 6 ATP ADENOSINE-5'-TRIPHOSPHATE × 5 ADP ADENOSINE-5'-DIPHOSPHATE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.20 Å
8RCD RAD51 nucleoprotein filament on abasic single-stranded DNA Deposited 2023-12-06 Assembly 1 Protein–DNA Homooligomer；Protein × 8 PDB declaration: nonameric（9） Consistent with all polymers
Chain A 1–339（339 aa）
Chain B 1–339（339 aa）
Chain C 1–339（339 aa）
Chain D 1–339（339 aa）
Chain E 1–339（339 aa）
Chain F 1–339（339 aa）
Chain G 1–339（339 aa）
Chain H 1–339（339 aa）
Not recorded ATP ADENOSINE-5'-TRIPHOSPHATE × 8 CA CALCIUM ION × 16 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.20 Å
8RCF RAD51 nucleoprotein filament on double-stranded abasic DNA Deposited 2023-12-06 Assembly 1 Protein–DNA Homooligomer；Protein × 8 PDB declaration: decameric（10） Consistent with all polymers
Chain A 1–339（339 aa）
Chain B 1–339（339 aa）
Chain C 1–339（339 aa）
Chain D 1–339（339 aa）
Chain E 1–339（339 aa）
Chain F 1–339（339 aa）
Chain G 1–339（339 aa）
Chain H 1–339（339 aa）
Not recorded CA CALCIUM ION × 16 ATP ADENOSINE-5'-TRIPHOSPHATE × 8 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.40 Å
8UVW Crystal structure of RAD51-BRCA2 Cter complex Deposited 2023-11-05 Assembly 1 Insufficient information Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain B 85–339（255 aa）
Chain D 97–339（243 aa）
Mutation：C319S Mutation：S208E,A209D,C3287A,C3304A,C391S ADP ADENOSINE-5'-DIPHOSPHATE × 2 BEF BERYLLIUM TRIFLUORIDE ION × 2 EDO 1,2-ETHANEDIOL × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；293 K；25% v/v 1,4-Dioxane 0.05 M MOPS pH 7.0 0.005 M Magnesium chloride hexahydrate 0.001 M Spermine
Resolution 2.73 Å R-free 0.282
8XBT The cryo-EM structure of the octameric RAD51 ring bound to the nucleosome with the linker DNA binding Deposited 2023-12-07 Assembly 1 Protein–DNA Heteromer；Protein × 16 PDB declaration: 18-meric（18） Consistent with all polymers
Chain K 1–339（339 aa）
Chain L 1–339（339 aa）
Chain M 1–339（339 aa）
Chain N 1–339（339 aa）
Chain O 1–339（339 aa）
Chain P 1–339（339 aa）
Chain Q 1–339（339 aa）
Chain R 1–339（339 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.12 Å
8XBU The cryo-EM structure of the decameric RAD51 ring bound to the nucleosome with the linker DNA binding Deposited 2023-12-07 Assembly 1 Protein–DNA Heteromer；Protein × 18 PDB declaration: 20-meric（20） Consistent with all polymers
Chain K 1–339（339 aa）
Chain L 1–339（339 aa）
Chain M 1–339（339 aa）
Chain N 1–339（339 aa）
Chain O 1–339（339 aa）
Chain P 1–339（339 aa）
Chain Q 1–339（339 aa）
Chain R 1–339（339 aa）
Chain S 1–339（339 aa）
Chain T 1–339（339 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.24 Å
8XBV The cryo-EM structure of the RAD51 L1 and L2 loops bound to the linker DNA with the sticky end of the nucleosome Deposited 2023-12-07 Assembly 1 Protein–DNA Homooligomer；Protein × 2 PDB declaration: tetrameric（4） Consistent with all polymers
Chain K 1–339（339 aa）
Chain L 1–339（339 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 7.61 Å
8XBW The cryo-EM structure of the RAD51 N-terminal lobe domain bound to the histone H4 tail of the nucleosome Deposited 2023-12-07 Assembly 1 Protein–DNA Heteromer；Protein × 3 PDB declaration: pentameric（5） Consistent with all polymers
Chain L 1–339（339 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.89 Å
8XBX The cryo-EM structure of the RAD51 L2 loop bound to the linker DNA with the blunt end of the nucleosome Deposited 2023-12-07 Assembly 1 Protein–DNA Homooligomer；Protein × 3 PDB declaration: pentameric（5） Consistent with all polymers
Chain K 1–339（339 aa）
Chain L 1–339（339 aa）
Chain M 1–339（339 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.36 Å
8XBY The cryo-EM structure of the RAD51 L1 and L2 loops bound to the linker DNA with the blunt end of the nucleosome Deposited 2023-12-07 Assembly 1 Protein–DNA Homooligomer；Protein × 3 PDB declaration: pentameric（5） Consistent with all polymers
Chain K 1–339（339 aa）
Chain L 1–339（339 aa）
Chain M 1–339（339 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 7.80 Å
9I62 CryoEM structure of a RAD51 D-loop Deposited 2025-01-29 Assembly 1 Protein–DNA Homooligomer；Protein × 9 PDB declaration: 12-meric（12） Consistent with all polymers
Chain A 1–339（339 aa）
Chain B 1–339（339 aa）
Chain C 1–339（339 aa）
Chain D 1–339（339 aa）
Chain E 1–339（339 aa）
Chain F 1–339（339 aa）
Chain G 1–339（339 aa）
Chain H 1–339（339 aa）
Chain I 1–339（339 aa）
Not recorded CA CALCIUM ION × 18 ATP ADENOSINE-5'-TRIPHOSPHATE × 9 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.64 Å
9OMY Cryo-EM structure of an octameric RAD51-XRCC3-RAD51C (RAD51-X3C) complex Deposited 2025-05-14 Assembly 1 Protein heterocomplex Heteromer；Protein × 8 PDB declaration: octameric（8） Consistent with protein count
Chain A 1–339（339 aa）
Chain B 1–339（339 aa）
Chain D 1–339（339 aa）
Chain E 1–339（339 aa）
Not recorded ANP PHOSPHOAMINOPHOSPHONIC ACID-ADENYLATE ESTER × 6 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.25 Å
9OMZ Cryo-EM structure of a pentameric RAD51-XRCC3-RAD51C-RAD51D-XRCC2 (51-X3CDX2) complex. Deposited 2025-05-14 Assembly 1 Protein heterocomplex Heteromer；Protein × 5 PDB declaration: pentameric（5） Consistent with protein count
Chain B 1–339（339 aa）
Not recorded ANP PHOSPHOAMINOPHOSPHONIC ACID-ADENYLATE ESTER × 4 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.51 Å
9Q23 DX2-CX3-RAD51 structure in the intermediate state Deposited 2025-08-14 Assembly 1 Protein–DNA Heteromer；Protein × 6 PDB declaration: heptameric（7） Consistent with all polymers
Chain G 1–339（339 aa）
Chain I 1–339（339 aa）
Not recorded ADP ADENOSINE-5'-DIPHOSPHATE × 2 MG MAGNESIUM ION × 4 ATP ADENOSINE-5'-TRIPHOSPHATE × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.2
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.84 Å
9Q25 DX2-CX3-RAD51 in the closed state Deposited 2025-08-14 Assembly 1 Protein–DNA Heteromer；Protein × 5 PDB declaration: hexameric（6） Consistent with all polymers
Chain G 1–339（339 aa）
Not recorded ADP ADENOSINE-5'-DIPHOSPHATE × 2 MG MAGNESIUM ION × 4 ATP ADENOSINE-5'-TRIPHOSPHATE × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.2
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.24 Å
9Q28 DX2-CX3-RAD51 in the active state Deposited 2025-08-14 Assembly 1 Protein–DNA Heteromer；Protein × 6 PDB declaration: heptameric（7） Consistent with all polymers
Chain G 1–339（339 aa）
Chain I 1–339（339 aa）
Not recorded ADP ADENOSINE-5'-DIPHOSPHATE × 3 MG MAGNESIUM ION × 5 ATP ADENOSINE-5'-TRIPHOSPHATE × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.2
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.84 Å
9Q29 DX2-CX3 structure capping RAD51 filament Deposited 2025-08-14 Assembly 1 Protein–DNA Heteromer；Protein × 9 PDB declaration: decameric（10） Consistent with all polymers
Chain G 1–339（339 aa）
Chain I 1–339（339 aa）
Chain J 1–339（339 aa）
Chain K 1–339（339 aa）
Chain L 1–339（339 aa）
Not recorded ADP ADENOSINE-5'-DIPHOSPHATE × 1 CA CALCIUM ION × 13 ATP ADENOSINE-5'-TRIPHOSPHATE × 7 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.2
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.61 Å
9Q2A BCDX2-CX3-RAD51-RAD51-ssDNA supercomplex Deposited 2025-08-14 Assembly 1 Protein–DNA Heteromer；Protein × 8 PDB declaration: nonameric（9） Consistent with all polymers
Chain G 1–339（339 aa）
Chain I 1–339（339 aa）
Not recorded ADP ADENOSINE-5'-DIPHOSPHATE × 1 MG MAGNESIUM ION × 6 ATP ADENOSINE-5'-TRIPHOSPHATE × 5 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.2
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.67 Å
9Q2B DX2-CX3-RAD51 bound to DNA bubble Deposited 2025-08-14 Assembly 1 Protein–DNA Heteromer；Protein × 6 PDB declaration: octameric（8） Consistent with all polymers
Chain G 1–339（339 aa）
Chain I 1–339（339 aa）
Not recorded ADP ADENOSINE-5'-DIPHOSPHATE × 1 MG MAGNESIUM ION × 4 ATP ADENOSINE-5'-TRIPHOSPHATE × 3 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.2
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.20 Å
9QN8 RAD51 filament in complex with calcium and ATP bound by the RAD51AP1 C-terminus Deposited 2025-03-24 Assembly 1 Protein–DNA Heteromer；Protein × 12 PDB declaration: 13-meric（13） Consistent with all polymers
Chain A 1–339（339 aa）
Chain C 1–339（339 aa）
Chain E 1–339（339 aa）
Chain G 1–339（339 aa）
Chain I 1–339（339 aa）
Chain K 1–339（339 aa）
Not recorded ATP ADENOSINE-5'-TRIPHOSPHATE × 7 CA CALCIUM ION × 7 K POTASSIUM ION × 7 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.14 Å
9QNA RAD51 filament in complex with magnesium and ATP Deposited 2025-03-24 Assembly 1 Protein–DNA Homooligomer；Protein × 6 PDB declaration: heptameric（7） Consistent with all polymers
Chain A 1–339（339 aa）
Chain C 1–339（339 aa）
Chain E 1–339（339 aa）
Chain G 1–339（339 aa）
Chain I 1–339（339 aa）
Chain K 1–339（339 aa）
Not recorded ATP ADENOSINE-5'-TRIPHOSPHATE × 7 MG MAGNESIUM ION × 6 K POTASSIUM ION × 6 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.26 Å
9QNB RAD51 filament in complex with magnesium and ADP Deposited 2025-03-24 Assembly 1 Protein homooligomer Homooligomer；Protein × 6 PDB declaration: hexameric（6） Consistent with protein count
Chain A 1–339（339 aa）
Chain C 1–339（339 aa）
Chain E 1–339（339 aa）
Chain G 1–339（339 aa）
Chain I 1–339（339 aa）
Chain K 1–339（339 aa）
Not recorded MG MAGNESIUM ION × 6 ADP ADENOSINE-5'-DIPHOSPHATE × 6 K POTASSIUM ION × 6 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.63 Å
9QNC RAD51 filament in complex with magnesium and ATP bound by the RAD51AP1 C-terminus Deposited 2025-03-24 Assembly 1 Protein–DNA Heteromer；Protein × 12 PDB declaration: 13-meric（13） Consistent with all polymers
Chain A 1–339（339 aa）
Chain C 1–339（339 aa）
Chain E 1–339（339 aa）
Chain G 1–339（339 aa）
Chain I 1–339（339 aa）
Chain K 1–339（339 aa）
Not recorded ATP ADENOSINE-5'-TRIPHOSPHATE × 7 K POTASSIUM ION × 5 MG MAGNESIUM ION × 5 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.98 Å
9SRZ RAD51-ssDNA filament in complex with calcium and ATP bound by the RAD54B N-terminus Deposited 2025-09-25 Assembly 1 Protein–DNA Heteromer；Protein × 12 PDB declaration: 13-meric（13） Consistent with all polymers
Chain I 1–339（339 aa）
Chain J 1–339（339 aa）
Chain K 1–339（339 aa）
Chain L 1–339（339 aa）
Chain M 1–339（339 aa）
Chain N 1–339（339 aa）
Not recorded ATP ADENOSINE-5'-TRIPHOSPHATE × 6 CA CALCIUM ION × 12 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.61 Å
9SSL RAD51-ssDNA filament in complex with magnesium and ATP bound by the RAD54B N-terminus (peptide) Deposited 2025-09-26 Assembly 1 Protein–DNA Heteromer；Protein × 12 PDB declaration: 13-meric（13） Consistent with all polymers
Chain A 1–339（339 aa）
Chain B 1–339（339 aa）
Chain C 1–339（339 aa）
Chain D 1–339（339 aa）
Chain E 1–339（339 aa）
Chain F 1–339（339 aa）
Not recorded K POTASSIUM ION × 5 ATP ADENOSINE-5'-TRIPHOSPHATE × 7 MG MAGNESIUM ION × 5 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.90 Å
9SVX XRCC3-RAD51C-RAD51D-XRCC2 (XRCC3 complex) capping a RAD51 filament on single stranded DNA Deposited 2025-10-03 Assembly 1 Protein–DNA Heteromer；Protein × 9 PDB declaration: decameric（10） Consistent with all polymers
Chain E 1–339（339 aa）
Chain F 1–339（339 aa）
Chain G 1–339（339 aa）
Chain H 1–339（339 aa）
Chain I 1–339（339 aa）
Not recorded ADP ADENOSINE-5'-DIPHOSPHATE × 1 MG MAGNESIUM ION × 8 ATP ADENOSINE-5'-TRIPHOSPHATE × 7 CA CALCIUM ION × 5 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5；25 mM HEPES-NaOH pH 7.5, 100 mM NaCl, 2.5 mM MgCl2, 2.5 mM CaCl2, 1 mM ATP, 0.25 mM TCEP
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.70 Å
9SVY XRCC3-RAD51C-RAD51D-XRCC2 (XRCC3 complex) capping a RAD51 filament on partially duplex DNA Deposited 2025-10-03 Assembly 1 Protein–DNA Heteromer；Protein × 11 PDB declaration: 13-meric（13） Consistent with all polymers
Chain E 1–339（339 aa）
Chain F 1–339（339 aa）
Chain G 1–339（339 aa）
Chain H 1–339（339 aa）
Chain I 1–339（339 aa）
Chain J 1–339（339 aa）
Chain K 1–339（339 aa）
Not recorded ATP ADENOSINE-5'-TRIPHOSPHATE × 9 MG MAGNESIUM ION × 10 ADP ADENOSINE-5'-DIPHOSPHATE × 1 CA CALCIUM ION × 7 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5；25 mM HEPES-NaOH pH 7.5, 100 mM NaCl, 2.5 mM MgCl2, 2.5 mM CaCl2, 1 mM ATP, 0.25 mM TCEP
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.60 Å
9SW0 XRCC3-RAD51C-RAD51D-XRCC2 (XRCC3 complex) capping a RAD51 filament on a D-loop intermediate Deposited 2025-10-03 Assembly 1 Protein–DNA Heteromer；Protein × 11 PDB declaration: 14-meric（14） Consistent with all polymers
Chain E 1–339（339 aa）
Chain F 1–339（339 aa）
Chain G 1–339（339 aa）
Chain H 1–339（339 aa）
Chain I 1–339（339 aa）
Chain J 1–339（339 aa）
Chain K 1–339（339 aa）
Not recorded ATP ADENOSINE-5'-TRIPHOSPHATE × 8 CA CALCIUM ION × 7 MG MAGNESIUM ION × 8 ADP ADENOSINE-5'-DIPHOSPHATE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5；25 mM HEPES-NaOH pH 7.5, 100 mM NaCl, 2.5 mM MgCl2, 2.5 mM CaCl2, 1 mM ATP, 0.25 mM TCEP
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.00 Å
9TRL RAD51-ssDNA filament in complex with magnesium and ATP bound by the RAD54B N-terminus (beta-barrel) Deposited 2025-12-25 Assembly 1 Protein–DNA Heteromer；Protein × 11 PDB declaration: 12-meric（12） Consistent with all polymers
Chain A 1–339（339 aa）
Chain B 1–339（339 aa）
Chain C 1–339（339 aa）
Chain D 1–339（339 aa）
Chain E 1–339（339 aa）
Chain F 1–339（339 aa）
Not recorded K POTASSIUM ION × 5 ATP ADENOSINE-5'-TRIPHOSPHATE × 7 MG MAGNESIUM ION × 5 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.00 Å
9TRM RAD51-dsDNA filament in complex with calcium and ATP bound by the RAD54B N-terminus Deposited 2025-12-25 Assembly 1 Protein–DNA Heteromer；Protein × 13 PDB declaration: 15-meric（15） Consistent with all polymers
Chain I 1–339（339 aa）
Chain J 1–339（339 aa）
Chain K 1–339（339 aa）
Chain L 1–339（339 aa）
Chain M 1–339（339 aa）
Chain N 1–339（339 aa）
Not recorded ATP ADENOSINE-5'-TRIPHOSPHATE × 6 CA CALCIUM ION × 12 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.40 Å
9TYY RAD51-ssDNA filament in complex with calcium and ATP bound by the RAD54 N-terminus Deposited 2026-01-21 Assembly 1 Protein–DNA Heteromer；Protein × 12 PDB declaration: 13-meric（13） Consistent with all polymers
Chain I 1–339（339 aa）
Chain J 1–339（339 aa）
Chain K 1–339（339 aa）
Chain L 1–339（339 aa）
Chain M 1–339（339 aa）
Chain N 1–339（339 aa）
Not recorded ATP ADENOSINE-5'-TRIPHOSPHATE × 6 CA CALCIUM ION × 12 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.20 Å
9ZZR Cryo-EM Structure of a RAD51 filament bound by ssDNA and the XRCC3-RAD51C-RAD51D-XRCC2 paralog complex Deposited 2026-01-07 Assembly 1 Protein–DNA Heteromer；Protein × 11 PDB declaration: dodecameric（12） Consistent with all polymers
Chain E 22–338（317 aa）
Chain F 24–337（314 aa）
Chain K 22–338（317 aa）
Chain O 22–338（317 aa）
Chain R 22–337（316 aa）
Chain V 22–337（316 aa）
Chain W 22–338（317 aa）
Not recorded ANP PHOSPHOAMINOPHOSPHONIC ACID-ADENYLATE ESTER × 11 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.95 Å

This page presents structural evidence recorded in PDB/mmCIF.“No recorded non-water small molecule” does not prove that the experimental sample was ligand-free; experimental conditions belong to the PDB experiment, while ligands and copy counts are shown for each biological assembly.