- EMDB-16145: Cryo-EM structure of NHEJ supercomplex(trimer) -
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Basic information
Entry
Database: EMDB / ID: EMD-16145
Title
Cryo-EM structure of NHEJ supercomplex(trimer)
Map data
Sample
Organelle or cellular component: NHEJ supercomplex trimer
Protein or peptide: DNA repair protein XRCC4
Protein or peptide: DNA ligase 4
Protein or peptide: Non-homologous end-joining factor 1
Protein or peptide: DNA-dependent protein kinase catalytic subunit
Protein or peptide: X-ray repair cross-complementing protein 6
Protein or peptide: X-ray repair cross-complementing protein 5
DNA: DNA (28-MER)
DNA: DNA (27-MER)
DNA: DNA (24-MER)
DNA: DNA (24-MER)
Keywords
NHEJ / DNA-PK / DNA-PKcs / Ku70 / Ku80 / XLF / DNA repair / DNA BINDING PROTEIN
Function / homology
Function and homology information
DNA ligation involved in DNA recombination / FHA domain binding / positive regulation of chromosome organization / positive regulation of ligase activity / DNA ligase IV complex / DNA ligation involved in DNA repair / DNA ligase activity / Ku70:Ku80 complex / DN2 thymocyte differentiation / negative regulation of t-circle formation ...DNA ligation involved in DNA recombination / FHA domain binding / positive regulation of chromosome organization / positive regulation of ligase activity / DNA ligase IV complex / DNA ligation involved in DNA repair / DNA ligase activity / Ku70:Ku80 complex / DN2 thymocyte differentiation / negative regulation of t-circle formation / positive regulation of platelet formation / DNA end binding / DNA ligase (ATP) / T cell receptor V(D)J recombination / pro-B cell differentiation / small-subunit processome assembly / positive regulation of lymphocyte differentiation / DNA ligase (ATP) activity / DNA-dependent protein kinase activity / histone H2AXS139 kinase activity / DNA-dependent protein kinase complex / immature B cell differentiation / DNA-dependent protein kinase-DNA ligase 4 complex / single strand break repair / cellular response to X-ray / immunoglobulin V(D)J recombination / nonhomologous end joining complex / DNA ligation / regulation of smooth muscle cell proliferation / V(D)J recombination / nuclear telomere cap complex / Cytosolic sensors of pathogen-associated DNA / double-strand break repair via classical nonhomologous end joining / isotype switching / protein localization to site of double-strand break / regulation of epithelial cell proliferation / IRF3-mediated induction of type I IFN / telomere capping / recombinational repair / regulation of telomere maintenance / regulation of hematopoietic stem cell differentiation / U3 snoRNA binding / positive regulation of neurogenesis / nucleotide-excision repair, DNA gap filling / cellular response to fatty acid / hematopoietic stem cell proliferation / protein localization to chromosome, telomeric region / cellular hyperosmotic salinity response / response to ionizing radiation / double-strand break repair via alternative nonhomologous end joining / T cell lineage commitment / negative regulation of cGAS/STING signaling pathway / DNA biosynthetic process / cellular response to lithium ion / telomeric DNA binding / maturation of 5.8S rRNA / positive regulation of catalytic activity / B cell lineage commitment / 2-LTR circle formation / positive regulation of double-strand break repair via nonhomologous end joining / site of DNA damage / somatic stem cell population maintenance / ligase activity / Lyases; Carbon-oxygen lyases; Other carbon-oxygen lyases / T cell differentiation / response to X-ray / 5'-deoxyribose-5-phosphate lyase activity / chromosome organization / hematopoietic stem cell differentiation / positive regulation of protein kinase activity / ectopic germ cell programmed cell death / ATP-dependent activity, acting on DNA / somitogenesis / SUMOylation of DNA damage response and repair proteins / DNA polymerase binding / condensed chromosome / DNA helicase activity / positive regulation of telomerase activity / enzyme activator activity / mitotic G1 DNA damage checkpoint signaling / positive regulation of telomere maintenance via telomerase / activation of innate immune response / telomere maintenance / cyclin binding / B cell differentiation / neurogenesis / positive regulation of erythrocyte differentiation / negative regulation of protein phosphorylation / cellular response to leukemia inhibitory factor / stem cell proliferation / central nervous system development / positive regulation of translation / cellular response to ionizing radiation / small-subunit processome / protein-DNA complex / response to gamma radiation / Nonhomologous End-Joining (NHEJ) / peptidyl-threonine phosphorylation / Hydrolases; Acting on acid anhydrides; Acting on acid anhydrides to facilitate cellular and subcellular movement / protein destabilization Similarity search - Function
XLF, N-terminal / XLF N-terminal domain / DNA ligase IV domain / DNA ligase IV / DNA ligase 4 / DNA Ligase 4, adenylation domain / XRCC4, N-terminal domain superfamily / DNA repair protein XRCC4 / XRCC4 N-terminal domain / XRCC4-like, N-terminal domain superfamily ...XLF, N-terminal / XLF N-terminal domain / DNA ligase IV domain / DNA ligase IV / DNA ligase 4 / DNA Ligase 4, adenylation domain / XRCC4, N-terminal domain superfamily / DNA repair protein XRCC4 / XRCC4 N-terminal domain / XRCC4-like, N-terminal domain superfamily / Ku70, bridge and pillars domain superfamily / : / Ku70 / Ku, C-terminal / Ku, C-terminal domain superfamily / Ku C terminal domain like / Ku80 / Ku70/Ku80 C-terminal arm / Ku70/Ku80, N-terminal alpha/beta / Ku70/Ku80 beta-barrel domain / Ku70/Ku80 C-terminal arm / Ku70/Ku80 N-terminal alpha/beta domain / Ku70 and Ku80 are 70kDa and 80kDa subunits of the Lupus Ku autoantigen / Ku70/Ku80 beta-barrel domain / DNA ligase, ATP-dependent / DNA ligase, ATP-dependent, N-terminal / DNA ligase, ATP-dependent, N-terminal domain superfamily / DNA ligase N terminus / DNA-dependent protein kinase catalytic subunit, CC3 / SPOC-like, C-terminal domain superfamily / DNA-dependent protein kinase catalytic subunit, catalytic domain / DNA-dependent protein kinase catalytic subunit, CC5 / DNA-dependent protein kinase catalytic subunit, CC1/2 / DNA-PKcs, N-terminal / DNA-dependent protein kinase catalytic subunit, CC3 / DNA-PKcs, CC5 / DNA-PKcs, N-terminal / DNA-dependent protein kinase catalytic subunit, CC1/2 / NUC194 / ATP-dependent DNA ligase signature 2. / ATP-dependent DNA ligase AMP-binding site. / DNA ligase, ATP-dependent, C-terminal / ATP dependent DNA ligase C terminal region / DNA ligase, ATP-dependent, conserved site / ATP-dependent DNA ligase family profile. / SAP domain superfamily / DNA ligase, ATP-dependent, central / ATP dependent DNA ligase domain / DNA repair protein XRCC4-like, C-terminal / SAP domain / SAP motif profile. / Putative DNA-binding (bihelical) motif predicted to be involved in chromosomal organisation / SAP domain / PIK-related kinase, FAT / FAT domain / FATC domain / FATC / FATC domain / PIK-related kinase / FAT domain profile. / FATC domain profile. / BRCA1 C Terminus (BRCT) domain / Phosphatidylinositol 3- and 4-kinases signature 1. / breast cancer carboxy-terminal domain / Phosphatidylinositol 3/4-kinase, conserved site / Phosphatidylinositol 3- and 4-kinases signature 2. / Phosphatidylinositol 3-/4-kinase, catalytic domain superfamily / Phosphoinositide 3-kinase, catalytic domain / Phosphatidylinositol 3- and 4-kinase / Phosphatidylinositol 3- and 4-kinases catalytic domain profile. / Phosphatidylinositol 3-/4-kinase, catalytic domain / von Willebrand factor (vWF) type A domain / von Willebrand factor, type A / BRCT domain profile. / BRCT domain / BRCT domain superfamily / von Willebrand factor A-like domain superfamily / Armadillo-like helical / Armadillo-type fold / Nucleic acid-binding, OB-fold / Protein kinase-like domain superfamily Similarity search - Domain/homology
X-ray repair cross-complementing protein 6 / X-ray repair cross-complementing protein 5 / DNA ligase 4 / DNA-dependent protein kinase catalytic subunit / DNA repair protein XRCC4 / Non-homologous end-joining factor 1 Similarity search - Component
Biological species
Homo sapiens (human)
Method
single particle reconstruction / cryo EM / Resolution: 7.76 Å
Journal: Structure / Year: 2023 Title: Cryo-EM structure of a DNA-PK trimer: higher order oligomerisation in NHEJ. Authors: Steven W Hardwick / Antonia Kefala Stavridi / Dimitri Y Chirgadze / Taiana Maia De Oliveira / Jean-Baptiste Charbonnier / Virginie Ropars / Katheryn Meek / Tom L Blundell / Amanda K Chaplin / Abstract: The ability of humans to maintain the integrity of the genome is imperative for cellular survival. DNA double-strand breaks (DSBs) are considered the most critical type of DNA lesion, which can ...The ability of humans to maintain the integrity of the genome is imperative for cellular survival. DNA double-strand breaks (DSBs) are considered the most critical type of DNA lesion, which can ultimately lead to diseases including cancer. Non-homologous end joining (NHEJ) is one of two core mechanisms utilized to repair DSBs. DNA-PK is a key component in this process and has recently been shown to form alternate long-range synaptic dimers. This has led to the proposal that these complexes can be formed before transitioning to a short-range synaptic complex. Here we present cryo-EM data representing an NHEJ supercomplex consisting of a trimer of DNA-PK in complex with XLF, XRCC4, and DNA Ligase IV. This trimer represents a complex of both long-range synaptic dimers. We discuss the potential role of the trimeric structure, and possible higher order oligomers, as structural intermediates in the NHEJ mechanism, or as functional DNA repair centers.
UniProtKB: DNA-dependent protein kinase catalytic subunit
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Macromolecule #5: X-ray repair cross-complementing protein 6
Macromolecule
Name: X-ray repair cross-complementing protein 6 / type: protein_or_peptide / ID: 5 / Number of copies: 3 / Enantiomer: LEVO EC number: Hydrolases; Acting on acid anhydrides; Acting on acid anhydrides to facilitate cellular and subcellular movement
UniProtKB: X-ray repair cross-complementing protein 6
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Macromolecule #6: X-ray repair cross-complementing protein 5
Macromolecule
Name: X-ray repair cross-complementing protein 5 / type: protein_or_peptide / ID: 6 / Number of copies: 3 / Enantiomer: LEVO EC number: Hydrolases; Acting on acid anhydrides; Acting on acid anhydrides to facilitate cellular and subcellular movement
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