- EMDB-14955: Cryo-EM structure of Ku 70/80 bound to inositol hexakisphosphate -
+
データを開く
IDまたはキーワード:
読み込み中...
-
基本情報
登録情報
データベース: EMDB / ID: EMD-14955
タイトル
Cryo-EM structure of Ku 70/80 bound to inositol hexakisphosphate
マップデータ
試料
複合体: Cryo-EM structure of Ku 70/80 bound to inositol hexakisphosphate
タンパク質・ペプチド: X-ray repair cross-complementing protein 6
タンパク質・ペプチド: X-ray repair cross-complementing protein 5
リガンド: INOSITOL HEXAKISPHOSPHATE
キーワード
DNA repair / NHEJ / Ku 70/80 / DNA-PK / cancer / double-strand break / DNA binding protein
機能・相同性
機能・相同性情報
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 ...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 / nuclear telomere cap complex / double-strand break repair via classical nonhomologous end joining / Cytosolic sensors of pathogen-associated DNA / IRF3-mediated induction of type I IFN / positive regulation of neurogenesis / regulation of telomere maintenance / cellular response to fatty acid / recombinational repair / U3 snoRNA binding / cellular hyperosmotic salinity response / protein localization to chromosome, telomeric region / telomeric DNA binding / 2-LTR circle formation / hematopoietic stem cell proliferation / positive regulation of protein kinase activity / site of DNA damage / 付加脱離酵素(リアーゼ); 炭素-酸素リアーゼ類; その他の炭素-酸素リアーゼ / 5'-deoxyribose-5-phosphate lyase activity / hematopoietic stem cell differentiation / ATP-dependent activity, acting on DNA / telomere maintenance via telomerase / neurogenesis / DNA helicase activity / telomere maintenance / activation of innate immune response / cyclin binding / cellular response to leukemia inhibitory factor / Nonhomologous End-Joining (NHEJ) / small-subunit processome / enzyme activator activity / cellular response to gamma radiation / protein-DNA complex / 加水分解酵素; 酸無水物に作用; 酸無水物に作用・細胞または細胞小器官の運動に関与 / double-strand break repair via nonhomologous end joining / double-strand break repair / double-stranded DNA binding / scaffold protein binding / secretory granule lumen / DNA recombination / transcription regulator complex / ficolin-1-rich granule lumen / damaged DNA binding / chromosome, telomeric region / transcription cis-regulatory region binding / response to xenobiotic stimulus / ribonucleoprotein complex / innate immune response / negative regulation of DNA-templated transcription / ubiquitin protein ligase binding / DNA damage response / Neutrophil degranulation / protein-containing complex binding / positive regulation of DNA-templated transcription / nucleolus / positive regulation of transcription by RNA polymerase II / protein-containing complex / ATP hydrolysis activity / DNA binding / RNA binding / extracellular region / nucleoplasm / ATP binding / nucleus / membrane / plasma membrane / cytosol 類似検索 - 分子機能
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 C-terminal arm / Ku70/Ku80, N-terminal alpha/beta ...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 C-terminal arm / Ku70/Ku80, N-terminal alpha/beta / Ku70/Ku80 beta-barrel domain / 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 / SPOC-like, C-terminal domain superfamily / SAP domain superfamily / SAP motif profile. / SAP domain / Putative DNA-binding (bihelical) motif predicted to be involved in chromosomal organisation / SAP domain / von Willebrand factor (vWF) type A domain / von Willebrand factor, type A / von Willebrand factor A-like domain superfamily 類似検索 - ドメイン・相同性
X-ray repair cross-complementing protein 6 / X-ray repair cross-complementing protein 5 類似検索 - 構成要素
ジャーナル: Nucleic Acids Res / 年: 2023 タイトル: Structural and functional basis of inositol hexaphosphate stimulation of NHEJ through stabilization of Ku-XLF interaction. 著者: Antonia Kefala Stavridi / Amandine Gontier / Vincent Morin / Philippe Frit / Virginie Ropars / Nadia Barboule / Carine Racca / Sagun Jonchhe / Michael J Morten / Jessica Andreani / Alexey Rak ...著者: Antonia Kefala Stavridi / Amandine Gontier / Vincent Morin / Philippe Frit / Virginie Ropars / Nadia Barboule / Carine Racca / Sagun Jonchhe / Michael J Morten / Jessica Andreani / Alexey Rak / Pierre Legrand / Alexa Bourand-Plantefol / Steven W Hardwick / Dimitri Y Chirgadze / Paul Davey / Taiana Maia De Oliveira / Eli Rothenberg / Sebastien Britton / Patrick Calsou / Tom L Blundell / Paloma F Varela / Amanda K Chaplin / Jean-Baptiste Charbonnier / 要旨: The classical Non-Homologous End Joining (c-NHEJ) pathway is the predominant process in mammals for repairing endogenous, accidental or programmed DNA Double-Strand Breaks. c-NHEJ is regulated by ...The classical Non-Homologous End Joining (c-NHEJ) pathway is the predominant process in mammals for repairing endogenous, accidental or programmed DNA Double-Strand Breaks. c-NHEJ is regulated by several accessory factors, post-translational modifications, endogenous chemical agents and metabolites. The metabolite inositol-hexaphosphate (IP6) stimulates c-NHEJ by interacting with the Ku70-Ku80 heterodimer (Ku). We report cryo-EM structures of apo- and DNA-bound Ku in complex with IP6, at 3.5 Å and 2.74 Å resolutions respectively, and an X-ray crystallography structure of a Ku in complex with DNA and IP6 at 3.7 Å. The Ku-IP6 interaction is mediated predominantly via salt bridges at the interface of the Ku70 and Ku80 subunits. This interaction is distant from the DNA, DNA-PKcs, APLF and PAXX binding sites and in close proximity to XLF binding site. Biophysical experiments show that IP6 binding increases the thermal stability of Ku by 2°C in a DNA-dependent manner, stabilizes Ku on DNA and enhances XLF affinity for Ku. In cells, selected mutagenesis of the IP6 binding pocket reduces both Ku accrual at damaged sites and XLF enrolment in the NHEJ complex, which translate into a lower end-joining efficiency. Thus, this study defines the molecular bases of the IP6 metabolite stimulatory effect on the c-NHEJ repair activity.