DNA binding protein / ATP binding domain / homologous recombination / RAD51 paralog / RECOMBINATION / ssDNA
Function / homology
Function and homology information
meiotic DNA recombinase assembly / Rad51C-XRCC3 complex / Rad51B-Rad51C-Rad51D-XRCC2 complex / female meiosis sister chromatid cohesion / blastocyst growth / crossover junction DNA endonuclease activity / somite development / telomere maintenance via recombination / DNA strand invasion / Impaired BRCA2 binding to PALB2 ...meiotic DNA recombinase assembly / Rad51C-XRCC3 complex / Rad51B-Rad51C-Rad51D-XRCC2 complex / female meiosis sister chromatid cohesion / blastocyst growth / crossover junction DNA endonuclease activity / somite development / telomere maintenance via recombination / DNA strand invasion / Impaired BRCA2 binding to PALB2 / gamma-tubulin binding / reciprocal meiotic recombination / regulation of fibroblast apoptotic process / sister chromatid cohesion / centrosome cycle / 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 / positive regulation of neurogenesis / ATP-dependent DNA damage sensor activity / male meiosis I / Presynaptic phase of homologous DNA pairing and strand exchange / response to X-ray / ATP-dependent activity, acting on DNA / somitogenesis / interstrand cross-link repair / positive regulation of G2/M transition of mitotic cell cycle / telomere maintenance / neurogenesis / meiotic cell cycle / replication fork / TP53 Regulates Transcription of DNA Repair Genes / response to gamma radiation / double-strand break repair via homologous recombination / multicellular organism growth / HDR through Homologous Recombination (HRR) / Meiotic recombination / cell junction / mitotic cell cycle / single-stranded DNA binding / Factors involved in megakaryocyte development and platelet production / spermatogenesis / double-stranded DNA binding / DNA recombination / in utero embryonic development / negative regulation of neuron apoptotic process / chromosome, telomeric region / regulation of cell cycle / intracellular membrane-bounded organelle / DNA repair / centrosome / positive regulation of cell population proliferation / perinuclear region of cytoplasm / ATP hydrolysis activity / mitochondrion / DNA binding / nucleoplasm / ATP binding / nucleus / cytosol / cytoplasm Similarity search - Function
DNA repair protein XRCC2 / DNA repair protein RAD51 homologue 2 / : / : / : / : / RAD51D, N-terminal domain / DNA recombination and repair protein, RecA-like / DNA recombination and repair protein Rad51-like, C-terminal / Rad51 ...DNA repair protein XRCC2 / DNA repair protein RAD51 homologue 2 / : / : / : / : / RAD51D, N-terminal domain / DNA recombination and repair protein, RecA-like / DNA recombination and repair protein Rad51-like, C-terminal / Rad51 / DNA recombination and repair protein RecA-like, ATP-binding domain / RecA family profile 1. / 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 2 / DNA repair protein RAD51 homolog 3 / DNA repair protein XRCC2 / DNA repair protein RAD51 homolog 4 Similarity search - Component
Biological species
Homo sapiens (human) / synthetic construct (others)
Method
single particle reconstruction / cryo EM / Resolution: 3.11 Å
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)
R01 GM115568
United States
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)
R01 GM128731
United States
Cancer Prevention and Research Institute of Texas (CPRIT)
RR200030
United States
National Institutes of Health/National Cancer Institute (NIH/NCI)
R01 CA168635
United States
National Institutes of Health/National Cancer Institute (NIH/NCI)
R35 CA241801
United States
Cancer Prevention and Research Institute of Texas (CPRIT)
RR180029
United States
Cancer Prevention and Research Institute of Texas (CPRIT)
RR210023
United States
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)
R00 GM140264
United States
Cancer Prevention and Research Institute of Texas (CPRIT)
RR220068
United States
Citation
Journal: Nature / Year: 2023 Title: Structural insights into BCDX2 complex function in homologous recombination. Authors: Yashpal Rawal / Lijia Jia / Aviv Meir / Shuo Zhou / Hardeep Kaur / Eliza A Ruben / Youngho Kwon / Kara A Bernstein / Maria Jasin / Alexander B Taylor / Sandeep Burma / Robert Hromas / ...Authors: Yashpal Rawal / Lijia Jia / Aviv Meir / Shuo Zhou / Hardeep Kaur / Eliza A Ruben / Youngho Kwon / Kara A Bernstein / Maria Jasin / Alexander B Taylor / Sandeep Burma / Robert Hromas / Alexander V Mazin / Weixing Zhao / Daohong Zhou / Elizabeth V Wasmuth / Eric C Greene / Patrick Sung / Shaun K Olsen / Abstract: Homologous recombination (HR) fulfils a pivotal role in the repair of DNA double-strand breaks and collapsed replication forks. HR depends on the products of several paralogues of RAD51, including ...Homologous recombination (HR) fulfils a pivotal role in the repair of DNA double-strand breaks and collapsed replication forks. HR depends on the products of several paralogues of RAD51, including the tetrameric complex of RAD51B, RAD51C, RAD51D and XRCC2 (BCDX2). BCDX2 functions as a mediator of nucleoprotein filament assembly by RAD51 and single-stranded DNA (ssDNA) during HR, but its mechanism remains undefined. Here we report cryogenic electron microscopy reconstructions of human BCDX2 in apo and ssDNA-bound states. The structures reveal how the amino-terminal domains of RAD51B, RAD51C and RAD51D participate in inter-subunit interactions that underpin complex formation and ssDNA-binding specificity. Single-molecule DNA curtain analysis yields insights into how BCDX2 enhances RAD51-ssDNA nucleoprotein filament assembly. Moreover, our cryogenic electron microscopy and functional analyses explain how RAD51C alterations found in patients with cancer inactivate DNA binding and the HR mediator activity of BCDX2. Our findings shed light on the role of BCDX2 in HR and provide a foundation for understanding how pathogenic alterations in BCDX2 impact genome repair.
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