Annotations: 9ON2

Cryo-EM structure of a tetrameric XRCC3-RAD51C-RAD51D-XRCC2 complex

External Resource: Annotation

Domain Annotation: SCOP2 Classification
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Pharos: Disease Associations

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
C [auth D]	SCOP2B Superfamily	Helix-hairpin-helix tandem	8056646	3000163	SCOP2B (2022-06-29)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
C [auth D]	PF08423	Rad51 (Rad51)	Rad51	Rad51 is a DNA repair and recombination protein and is a homologue of the bacterial ATPase RecA protein.	Domain
B [auth C]	PF08423	Rad51 (Rad51)	Rad51	Rad51 is a DNA repair and recombination protein and is a homologue of the bacterial ATPase RecA protein.	Domain
A	PF08423	Rad51 (Rad51)	Rad51	Rad51 is a DNA repair and recombination protein and is a homologue of the bacterial ATPase RecA protein.	Domain
A	PF26169	XRCC3/RpoA-like, helix-hairpin-helix domain (HHH_XRCC3_RpoA)	XRCC3/RpoA-like, helix-hairpin-helix domain	This domain is found at the N-terminal end of human DNA repair protein XRCC3 and similar proteins, and at the C-terminal end of plant DNA-directed RNA polymerase subunit alpha (RpoA). XRCC3 is involved in the homologous recombination repair pathway o ...	This domain is found at the N-terminal end of human DNA repair protein XRCC3 and similar proteins, and at the C-terminal end of plant DNA-directed RNA polymerase subunit alpha (RpoA). XRCC3 is involved in the homologous recombination repair pathway of double-stranded DNA, thought to repair chromosomal fragmentation, translocations and deletions. It is part of the RAD51 paralogue protein complex CX3 [5-7]. This domain is predicted to adopt an helix-hairpin-helix (HHH) fold.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
D [auth X]	DNA repair protein XRCC2	binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding small molecule binding DNA binding nucleic acid binding ATP-dependent activity, acting on DNA DNA damage sensor activity molecular sensor activity catalytic activity, acting on DNA ATP-dependent DNA damage sensor activity catalytic activity, acting on a nucleic acid molecular function regulator activity catalytic activity ATP-dependent activity	nucleobase-containing compound metabolic process DNA recombination metabolic process cellular process primary metabolic process DNA metabolic process macromolecule metabolic process DNA strand invasion nucleic acid metabolic process cell cycle mitotic cell cycle cellular response to stimulus double-strand break repair response to stimulus nucleobase-containing compound metabolic process DNA recombination metabolic process cellular process primary metabolic process DNA metabolic process macromolecule metabolic process DNA strand invasion nucleic acid metabolic process cell cycle mitotic cell cycle cellular response to stimulus double-strand break repair response to stimulus cellular response to stress DNA damage response response to stress recombinational repair double-strand break repair via homologous recombination DNA repair microtubule organizing center organization microtubule cytoskeleton organization cellular component organization organelle organization centrosome cycle microtubule-based process cellular component organization or biogenesis cytoskeleton organization cell cycle process supramolecular fiber organization sexual reproduction reproductive process meiotic cell cycle	intracellular organelle cellular anatomical structure intracellular anatomical structure organelle membraneless organelle replication fork intracellular membraneless organelle chromosome membrane-bounded organelle protein-containing complex nucleus Rad51B-Rad51C-Rad51D-XRCC2 complex nuclear protein-containing complex intracellular membrane-bounded organelle intracellular organelle cellular anatomical structure intracellular anatomical structure organelle membraneless organelle replication fork intracellular membraneless organelle chromosome membrane-bounded organelle protein-containing complex nucleus Rad51B-Rad51C-Rad51D-XRCC2 complex nuclear protein-containing complex intracellular membrane-bounded organelle DNA recombinase mediator complex centrosome microtubule organizing center cytoskeleton microtubule cytoskeleton membrane-enclosed lumen intracellular organelle lumen nucleoplasm organelle lumen nuclear lumen
C [auth D]	DNA repair protein RAD51 homolog 4	ATP-dependent activity, acting on DNA catalytic activity, acting on DNA catalytic activity, acting on a nucleic acid catalytic activity ATP-dependent activity DNA damage sensor activity molecular sensor activity ATP-dependent DNA damage sensor activity molecular function regulator activity binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding ATP-dependent activity, acting on DNA catalytic activity, acting on DNA catalytic activity, acting on a nucleic acid catalytic activity ATP-dependent activity DNA damage sensor activity molecular sensor activity ATP-dependent DNA damage sensor activity molecular function regulator activity binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding small molecule binding DNA binding nucleic acid binding cytoskeletal protein binding protein binding gamma-tubulin binding tubulin binding single-stranded DNA binding	homologous recombination sexual reproduction reproductive process meiotic cell cycle process nucleobase-containing compound metabolic process cellular component organization meiosis I meiotic nuclear division cell cycle cellular component organization or biogenesis reciprocal homologous recombination cell cycle process DNA recombination meiotic cell cycle homologous recombination sexual reproduction reproductive process meiotic cell cycle process nucleobase-containing compound metabolic process cellular component organization meiosis I meiotic nuclear division cell cycle cellular component organization or biogenesis reciprocal homologous recombination cell cycle process DNA recombination meiotic cell cycle organelle fission primary metabolic process DNA metabolic process nucleic acid metabolic process reciprocal meiotic recombination nuclear division organelle organization meiosis I cell cycle process metabolic process cellular process macromolecule metabolic process mitotic recombination telomere organization chromosome organization telomere maintenance telomere maintenance via recombination DNA strand invasion cellular response to stimulus double-strand break repair response to stimulus cellular response to stress DNA damage response response to stress recombinational repair double-strand break repair via homologous recombination DNA repair supramolecular fiber organization	membrane-bounded organelle protein-containing complex intracellular anatomical structure nucleus Rad51B-Rad51C-Rad51D-XRCC2 complex nuclear protein-containing complex intracellular membrane-bounded organelle intracellular organelle cellular anatomical structure organelle DNA recombinase mediator complex centrosome microtubule organizing center cytoskeleton membrane-bounded organelle protein-containing complex intracellular anatomical structure nucleus Rad51B-Rad51C-Rad51D-XRCC2 complex nuclear protein-containing complex intracellular membrane-bounded organelle intracellular organelle cellular anatomical structure organelle DNA recombinase mediator complex centrosome microtubule organizing center cytoskeleton membraneless organelle intracellular membraneless organelle microtubule cytoskeleton membrane-enclosed lumen intracellular organelle lumen nucleoplasm organelle lumen nuclear lumen replication fork chromosome chromosome, telomeric region chromosomal region
B [auth C]	DNA repair protein RAD51 homolog 3	ATP-dependent activity, acting on DNA DNA damage sensor activity molecular sensor activity catalytic activity, acting on DNA ATP-dependent DNA damage sensor activity catalytic activity, acting on a nucleic acid molecular function regulator activity catalytic activity ATP-dependent activity binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding ATP-dependent activity, acting on DNA DNA damage sensor activity molecular sensor activity catalytic activity, acting on DNA ATP-dependent DNA damage sensor activity catalytic activity, acting on a nucleic acid molecular function regulator activity catalytic activity ATP-dependent activity binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding small molecule binding DNA binding nucleic acid binding endonuclease activity hydrolase activity crossover junction DNA endonuclease activity DNA nuclease activity DNA endonuclease activity DNA endonuclease activity, producing 3'-phosphomonoesters hydrolase activity, acting on ester bonds nuclease activity	cellular response to stimulus sexual reproduction response to stimulus reproductive process meiotic cell cycle process cellular component organization cellular component biogenesis protein-DNA complex organization nucleobase-containing compound metabolic process DNA recombinase assembly cellular component assembly cellular response to stress response to stress protein-containing complex assembly DNA repair complex assembly cellular response to stimulus sexual reproduction response to stimulus reproductive process meiotic cell cycle process cellular component organization cellular component biogenesis protein-DNA complex organization nucleobase-containing compound metabolic process DNA recombinase assembly cellular component assembly cellular response to stress response to stress protein-containing complex assembly DNA repair complex assembly recombinational repair cell cycle cellular component organization or biogenesis double-strand break repair via homologous recombination cell cycle process DNA repair double-strand break repair protein-containing complex organization meiotic cell cycle DNA recombination protein-DNA complex assembly primary metabolic process DNA metabolic process meiotic DNA recombinase assembly double-strand break repair via synthesis-dependent strand annealing nucleic acid metabolic process meiosis I cell cycle process DNA damage response cellular process metabolic process macromolecule metabolic process DNA-templated DNA replication DNA-templated DNA replication maintenance of fidelity DNA replication replication fork processing mitotic recombination telomere organization chromosome organization telomere maintenance organelle organization telomere maintenance via recombination sister chromatid cohesion supramolecular fiber organization regulation of cell cycle phase transition regulation of cellular process G2/M transition of mitotic cell cycle positive regulation of biological process cell cycle phase transition mitotic cell cycle regulation of mitotic cell cycle positive regulation of mitotic cell cycle phase transition positive regulation of cell cycle process positive regulation of mitotic cell cycle regulation of cell cycle positive regulation of cellular process cell cycle G2/M phase transition positive regulation of G2/M transition of mitotic cell cycle regulation of biological process regulation of G2/M transition of mitotic cell cycle regulation of cell cycle process biological regulation regulation of cell cycle G2/M phase transition positive regulation of cell cycle G2/M phase transition positive regulation of cell cycle regulation of mitotic cell cycle phase transition mitotic cell cycle process positive regulation of cell cycle phase transition mitotic cell cycle phase transition	membrane-bounded organelle intracellular organelle cellular anatomical structure intracellular anatomical structure mitochondrion organelle cytoplasm intracellular membrane-bounded organelle protein-containing complex nucleus Rad51B-Rad51C-Rad51D-XRCC2 complex nuclear protein-containing complex DNA recombinase mediator complex cytosol membrane-bounded organelle intracellular organelle cellular anatomical structure intracellular anatomical structure mitochondrion organelle cytoplasm intracellular membrane-bounded organelle protein-containing complex nucleus Rad51B-Rad51C-Rad51D-XRCC2 complex nuclear protein-containing complex DNA recombinase mediator complex cytosol membrane-enclosed lumen intracellular organelle lumen nucleoplasm organelle lumen nuclear lumen membraneless organelle replication fork intracellular membraneless organelle chromosome perinuclear region of cytoplasm Rad51C-XRCC3 complex nuclear replication fork nuclear chromosome
A	DNA repair protein XRCC3	ATP-dependent activity, acting on DNA DNA damage sensor activity molecular sensor activity catalytic activity, acting on DNA ATP-dependent DNA damage sensor activity catalytic activity, acting on a nucleic acid molecular function regulator activity catalytic activity ATP-dependent activity binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding ATP-dependent activity, acting on DNA DNA damage sensor activity molecular sensor activity catalytic activity, acting on DNA ATP-dependent DNA damage sensor activity catalytic activity, acting on a nucleic acid molecular function regulator activity catalytic activity ATP-dependent activity binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding small molecule binding DNA binding nucleic acid binding	cellular response to stimulus cellular response to stress response to stimulus DNA damage response response to stress cellular process DNA-templated DNA replication DNA-templated DNA replication maintenance of fidelity primary metabolic process DNA metabolic process nucleic acid metabolic process nucleobase-containing compound metabolic process DNA replication metabolic process cellular response to stimulus cellular response to stress response to stimulus DNA damage response response to stress cellular process DNA-templated DNA replication DNA-templated DNA replication maintenance of fidelity primary metabolic process DNA metabolic process nucleic acid metabolic process nucleobase-containing compound metabolic process DNA replication metabolic process macromolecule metabolic process replication fork processing DNA recombination mitotic recombination resolution of mitotic recombination intermediates resolution of DNA recombination intermediates positive regulation of cell communication regulation of cellular process regulation of cell cycle phase transition positive regulation of signal transduction positive regulation of cell cycle checkpoint negative regulation of biological process spindle checkpoint signaling negative regulation of cell cycle regulation of signal transduction regulation of mitotic nuclear division intracellular signal transduction negative regulation of mitotic cell cycle cell communication regulation of cell cycle checkpoint negative regulation of mitotic sister chromatid segregation negative regulation of chromosome organization negative regulation of cell cycle phase transition mitotic spindle checkpoint signaling signal transduction cell cycle mitotic sister chromatid separation chromosome segregation negative regulation of sister chromatid segregation mitotic spindle assembly checkpoint signaling regulation of biological process negative regulation of cellular component organization regulation of cell cycle process regulation of spindle checkpoint sister chromatid segregation positive regulation of intracellular signal transduction regulation of chromosome organization regulation of organelle organization regulation of mitotic cell cycle phase transition regulation of mitotic sister chromatid segregation mitotic cell cycle process regulation of response to stimulus positive regulation of mitotic cell cycle spindle assembly checkpoint regulation of chromosome separation negative regulation of mitotic nuclear division regulation of chromosome segregation regulation of cellular component organization regulation of mitotic sister chromatid separation regulation of metaphase/anaphase transition of cell cycle regulation of mitotic spindle checkpoint signaling regulation of mitotic cell cycle spindle assembly checkpoint spindle assembly checkpoint signaling positive regulation of biological process cell cycle phase transition regulation of mitotic metaphase/anaphase transition mitotic cell cycle cellular component organization positive regulation of response to stimulus regulation of mitotic cell cycle regulation of intracellular signal transduction negative regulation of cellular process mitotic sister chromatid segregation positive regulation of cell cycle process negative regulation of mitotic metaphase/anaphase transition cellular component organization or biogenesis regulation of cell cycle negative regulation of chromosome separation positive regulation of cellular process cell cycle process positive regulation of spindle checkpoint mitotic nuclear division regulation of signaling negative regulation of mitotic cell cycle phase transition organelle fission biological regulation chromosome organization negative regulation of cell cycle process positive regulation of cell cycle cell cycle checkpoint signaling mitotic cell cycle checkpoint signaling organelle organization nuclear division negative regulation of chromosome segregation negative regulation of nuclear division negative regulation of organelle organization chromosome separation regulation of sister chromatid segregation negative regulation of mitotic sister chromatid separation regulation of nuclear division negative regulation of metaphase/anaphase transition of cell cycle nuclear chromosome segregation metaphase/anaphase transition of mitotic cell cycle regulation of cell communication metaphase/anaphase transition of cell cycle mitotic cell cycle phase transition positive regulation of signaling telomere organization telomere maintenance telomere maintenance via recombination microtubule organizing center organization regulation of centrosome cycle microtubule cytoskeleton organization regulation of microtubule-based process centrosome duplication centrosome cycle regulation of centrosome duplication microtubule-based process cytoskeleton organization interstrand cross-link repair DNA repair formation of extrachromosomal circular DNA cellular component biogenesis cellular component assembly telomere maintenance via telomere trimming t-circle formation double-strand break repair recombinational repair double-strand break repair via homologous recombination telomeric loop disassembly	membrane-bounded organelle intracellular organelle cellular anatomical structure intracellular anatomical structure mitochondrion organelle cytoplasm intracellular membrane-bounded organelle nucleus membrane-enclosed lumen intracellular organelle lumen nucleoplasm organelle lumen nuclear lumen membrane-bounded organelle intracellular organelle cellular anatomical structure intracellular anatomical structure mitochondrion organelle cytoplasm intracellular membrane-bounded organelle nucleus membrane-enclosed lumen intracellular organelle lumen nucleoplasm organelle lumen nuclear lumen membraneless organelle replication fork intracellular membraneless organelle chromosome perinuclear region of cytoplasm protein-containing complex nuclear protein-containing complex Rad51C-XRCC3 complex DNA recombinase mediator complex nuclear replication fork nuclear chromosome chromosome, telomeric region chromosomal region

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
D [auth X]	IPR030547	DNA repair protein XRCC2	Family
D [auth X]	IPR020588	DNA recombination and repair protein RecA-like, ATP-binding domain	Domain
D [auth X]	IPR013632	Rad51-like, C-terminal	Domain
D [auth X]	IPR027417	P-loop containing nucleoside triphosphate hydrolase	Homologous Superfamily
C [auth D]	IPR051988	Homologous Recombination Repair RAD51 Paralog	Family
C [auth D]	IPR003593	AAA+ ATPase domain	Domain
C [auth D]	IPR047323	DNA repair protein RAD51 homolog 4, C-terminal	Domain
C [auth D]	IPR027417	P-loop containing nucleoside triphosphate hydrolase	Homologous Superfamily
C [auth D]	IPR016467	DNA recombination and repair protein, RecA-like	Family
C [auth D]	IPR020588	DNA recombination and repair protein RecA-like, ATP-binding domain	Domain
C [auth D]	IPR013632	Rad51-like, C-terminal	Domain
C [auth D]	IPR048943	RAD51D, N-terminal domain	Domain
B [auth C]	IPR027417	P-loop containing nucleoside triphosphate hydrolase	Homologous Superfamily
B [auth C]	IPR016467	DNA recombination and repair protein, RecA-like	Family
B [auth C]	IPR020588	DNA recombination and repair protein RecA-like, ATP-binding domain	Domain
B [auth C]	IPR013632	Rad51-like, C-terminal	Domain
B [auth C]	IPR052093	Homologous Recombination Repair Mediator	Family
A	IPR047348	DNA repair protein XRCC3-like, C-terminal	Domain
A	IPR027417	P-loop containing nucleoside triphosphate hydrolase	Homologous Superfamily
A	IPR016467	DNA recombination and repair protein, RecA-like	Family
A	IPR020588	DNA recombination and repair protein RecA-like, ATP-binding domain	Domain
A	IPR013632	Rad51-like, C-terminal	Domain
A	IPR058766	XRCC3/RAD51 homolog 2, helix-hairpin-helix domain	Domain

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
D [auth X]	: O43543	Fanconi anemia Fanconi anemia complementation group U breast carcinoma breast cancer aplastic anemia inherited aplastic anemia Malignant neoplasm of breast ovarian cancer astrocytic tumor cancer hematopoietic and lymphoid system neoplasm lung adenocarcinoma non-small cell lung carcinoma primary ovarian failure hereditary breast carcinoma Fanconi anemia Fanconi anemia complementation group U breast carcinoma breast cancer aplastic anemia inherited aplastic anemia Malignant neoplasm of breast ovarian cancer astrocytic tumor cancer hematopoietic and lymphoid system neoplasm lung adenocarcinoma non-small cell lung carcinoma primary ovarian failure hereditary breast carcinoma malignant ependymoma oligodendroglioma
C [auth D]	: O75771	breast-ovarian cancer, familial, susceptibility to, 4 hereditary breast ovarian cancer syndrome Chromosome Deletion ovarian cancer hereditary breast carcinoma ovarian neoplasm Sjogren syndrome cancer osteosarcoma malignant mesothelioma rheumatoid arthritis
B [auth C]	: O43502	Fanconi anemia Fanconi anemia complementation group O ovarian cancer breast-ovarian cancer, familial, susceptibility to, 3 hereditary breast ovarian cancer syndrome breast carcinoma breast cancer Mammary Neoplasms nasopharyngeal carcinoma ovarian neoplasm tuberculosis acute myeloid leukemia cancer aplastic anemia congenital anemia Fanconi anemia Fanconi anemia complementation group O ovarian cancer breast-ovarian cancer, familial, susceptibility to, 3 hereditary breast ovarian cancer syndrome breast carcinoma breast cancer Mammary Neoplasms nasopharyngeal carcinoma ovarian neoplasm tuberculosis acute myeloid leukemia cancer aplastic anemia congenital anemia esophageal atresia/tracheoesophageal fistula hematopoietic and lymphoid system neoplasm inherited aplastic anemia medulloblastoma hereditary breast carcinoma intellectual disability
A	: O43542	melanoma melanoma, cutaneous malignant, susceptibility to, 6 skin basal cell carcinoma breast cancer Neoplasm Invasiveness skin neoplasm breast carcinoma esophageal cancer head and neck cancer lead poisoning skin cancer anorexia nervosa osteosarcoma benign mesothelioma hereditary breast carcinoma melanoma melanoma, cutaneous malignant, susceptibility to, 6 skin basal cell carcinoma breast cancer Neoplasm Invasiveness skin neoplasm breast carcinoma esophageal cancer head and neck cancer lead poisoning skin cancer anorexia nervosa osteosarcoma benign mesothelioma hereditary breast carcinoma large cell medulloblastoma neoplasm of esophagus attention deficit hyperactivity disorder, inattentive type bipolar disorder skin pigmented basal cell carcinoma gastric cancer head and neck neoplasm hereditary diffuse gastric adenocarcinoma malignant tumor of neck mesothelioma neoplasm of neck autism spectrum disorder cutaneous melanoma gastric neoplasm inherited disease susceptibility