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Open data
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Basic information
| Entry | Database: PDB / ID: 8asc | ||||||
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| Title | Ku70/80 binds to the Ku-binding motif of PAXX | ||||||
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Keywords | DNA BINDING PROTEIN / NHEJ / DNA repair | ||||||
| Function / homology | Function and homology informationKu70:Ku80 complex / negative regulation of t-circle formation / DNA end binding / small-subunit processome assembly / positive regulation of lymphocyte differentiation / DNA-dependent protein kinase complex / DNA-dependent protein kinase-DNA ligase 4 complex / nonhomologous end joining complex / regulation of smooth muscle cell proliferation / cellular response to X-ray ...Ku70:Ku80 complex / negative regulation of t-circle formation / DNA end binding / small-subunit processome assembly / positive regulation of lymphocyte differentiation / DNA-dependent protein kinase complex / DNA-dependent protein kinase-DNA ligase 4 complex / nonhomologous end joining complex / regulation of smooth muscle cell proliferation / cellular response to X-ray / double-strand break repair via classical nonhomologous end joining / nuclear telomere cap complex / Cytosolic sensors of pathogen-associated DNA / IRF3-mediated induction of type I IFN / positive regulation of neurogenesis / recombinational repair / regulation of telomere maintenance / protein localization to chromosome, telomeric region / U3 snoRNA binding / cellular hyperosmotic salinity response / 2-LTR circle formation / hematopoietic stem cell proliferation / telomeric DNA binding / positive regulation of protein kinase activity / Lyases; Carbon-oxygen lyases; Other carbon-oxygen lyases / site of DNA damage / 5'-deoxyribose-5-phosphate lyase activity / hematopoietic stem cell differentiation / ATP-dependent activity, acting on DNA / telomere maintenance via telomerase / DNA polymerase binding / neurogenesis / activation of innate immune response / DNA helicase activity / telomere maintenance / cyclin binding / cellular response to leukemia inhibitory factor / small-subunit processome / Nonhomologous End-Joining (NHEJ) / enzyme activator activity / cellular response to gamma radiation / protein-DNA complex / double-strand break repair via nonhomologous end joining / Hydrolases; Acting on acid anhydrides; Acting on acid anhydrides to facilitate cellular and subcellular movement / double-strand break repair / site of double-strand break / double-stranded DNA binding / scaffold protein binding / secretory granule lumen / DNA recombination / transcription regulator complex / ficolin-1-rich granule lumen / molecular adaptor activity / damaged DNA binding / chromosome, telomeric region / transcription cis-regulatory region binding / ribonucleoprotein complex / innate immune response / negative regulation of DNA-templated transcription / DNA damage response / ubiquitin protein ligase binding / Neutrophil degranulation / positive regulation of DNA-templated transcription / protein-containing complex binding / nucleolus / protein homodimerization activity / positive regulation of transcription by RNA polymerase II / ATP hydrolysis activity / protein-containing complex / DNA binding / RNA binding / extracellular region / nucleoplasm / ATP binding / identical protein binding / nucleus / membrane / plasma membrane / cytosol / cytoplasm Similarity search - Function | ||||||
| Biological species | Homo sapiens (human)DNA molecule (others) | ||||||
| Method | X-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 2.95 Å | ||||||
Authors | Seif El Dahan, M. / Ropars, V. / Charbonnier, J.B. | ||||||
| Funding support | France, 1items
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Citation | Journal: Sci Adv / Year: 2023Title: PAXX binding to the NHEJ machinery explains functional redundancy with XLF. Authors: Murielle Seif-El-Dahan / Antonia Kefala-Stavridi / Philippe Frit / Steven W Hardwick / Dima Y Chirgadze / Taiana Maia De Oliviera / Jessica Andreani / Sébastien Britton / Nadia Barboule / ...Authors: Murielle Seif-El-Dahan / Antonia Kefala-Stavridi / Philippe Frit / Steven W Hardwick / Dima Y Chirgadze / Taiana Maia De Oliviera / Jessica Andreani / Sébastien Britton / Nadia Barboule / Madeleine Bossaert / Arun Prasad Pandurangan / Katheryn Meek / Tom L Blundell / Virginie Ropars / Patrick Calsou / Jean-Baptiste Charbonnier / Amanda K Chaplin / ![]() Abstract: Nonhomologous end joining is a critical mechanism that repairs DNA double-strand breaks in human cells. In this work, we address the structural and functional role of the accessory protein PAXX ...Nonhomologous end joining is a critical mechanism that repairs DNA double-strand breaks in human cells. In this work, we address the structural and functional role of the accessory protein PAXX [paralog of x-ray repair cross-complementing protein 4 (XRCC4) and XRCC4-like factor (XLF)] in this mechanism. Here, we report high-resolution cryo-electron microscopy (cryo-EM) and x-ray crystallography structures of the PAXX C-terminal Ku-binding motif bound to Ku70/80 and cryo-EM structures of PAXX bound to two alternate DNA-dependent protein kinase (DNA-PK) end-bridging dimers, mediated by either Ku80 or XLF. We identify residues critical for the Ku70/PAXX interaction in vitro and in cells. We demonstrate that PAXX and XLF can bind simultaneously to the Ku heterodimer and act as structural bridges in alternate forms of DNA-PK dimers. Last, we show that engagement of both proteins provides a complementary advantage for DNA end synapsis and end joining in cells. | ||||||
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Structure visualization
| Structure viewer | Molecule: Molmil Jmol/JSmol |
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Downloads & links
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Download
| PDBx/mmCIF format | 8asc.cif.gz | 1.8 MB | Display | PDBx/mmCIF format |
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| PDB format | pdb8asc.ent.gz | 1.5 MB | Display | PDB format |
| PDBx/mmJSON format | 8asc.json.gz | Tree view | PDBx/mmJSON format | |
| Others | Other downloads |
-Validation report
| Summary document | 8asc_validation.pdf.gz | 593.9 KB | Display | wwPDB validaton report |
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| Full document | 8asc_full_validation.pdf.gz | 694.9 KB | Display | |
| Data in XML | 8asc_validation.xml.gz | 151.4 KB | Display | |
| Data in CIF | 8asc_validation.cif.gz | 203.1 KB | Display | |
| Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/as/8asc ftp://data.pdbj.org/pub/pdb/validation_reports/as/8asc | HTTPS FTP |
-Related structure data
| Related structure data | ![]() 7zwaC ![]() 7zygC ![]() 8bh3C ![]() 8bhvC ![]() 8bhyC ![]() 1jeyS S: Starting model for refinement C: citing same article ( |
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| Similar structure data | Similarity search - Function & homology F&H Search |
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Assembly
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| Noncrystallographic symmetry (NCS) | NCS domain:
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About Yorodumi




Homo sapiens (human)
X-RAY DIFFRACTION
France, 1items
Citation












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