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データを開く
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基本情報
登録情報 | データベース: PDB / ID: 8s8p | ||||||||||||||||||||||||
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タイトル | Restriction on Ku Inward Translocation Caps Telomere Ends | ||||||||||||||||||||||||
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![]() | DNA BINDING PROTEIN / Telomere / NHEJ / Rap1 / Ku / Chromosome / DNA Repair / Mutagenesis | ||||||||||||||||||||||||
機能・相同性 | ![]() positive regulation of ribosomal protein gene transcription by RNA polymerase II / G-quadruplex DNA formation / donor selection / mitochondrial double-strand break repair via homologous recombination / telomeric G-quadruplex DNA binding / protein localization to chromosome / establishment of protein-containing complex localization to telomere / protection from non-homologous end joining at telomere / establishment of protein localization to telomere / Ku70:Ku80 complex ...positive regulation of ribosomal protein gene transcription by RNA polymerase II / G-quadruplex DNA formation / donor selection / mitochondrial double-strand break repair via homologous recombination / telomeric G-quadruplex DNA binding / protein localization to chromosome / establishment of protein-containing complex localization to telomere / protection from non-homologous end joining at telomere / establishment of protein localization to telomere / Ku70:Ku80 complex / establishment of protein localization to chromatin / telomere maintenance via telomere lengthening / shelterin complex / double-stranded telomeric DNA binding / G-quadruplex DNA binding / double-strand break repair via break-induced replication / telomerase RNA binding / recombinational repair / silent mating-type cassette heterochromatin formation / regulation of glycolytic process / DNA binding, bending / nucleosomal DNA binding / nuclear chromosome / telomeric DNA binding / TFIID-class transcription factor complex binding / subtelomeric heterochromatin formation / cis-regulatory region sequence-specific DNA binding / Neutrophil degranulation / telomere maintenance / DNA helicase activity / TBP-class protein binding / double-strand break repair via homologous recombination / helicase activity / protein-DNA complex / double-strand break repair via nonhomologous end joining / nuclear envelope / chromatin organization / histone binding / transcription regulator complex / damaged DNA binding / DNA helicase / sequence-specific DNA binding / RNA polymerase II-specific DNA-binding transcription factor binding / DNA-binding transcription factor activity, RNA polymerase II-specific / chromosome, telomeric region / DNA-binding transcription factor activity / negative regulation of transcription by RNA polymerase II / positive regulation of transcription by RNA polymerase II / ATP hydrolysis activity / DNA binding / ATP binding / nucleus / cytosol 類似検索 - 分子機能 | ||||||||||||||||||||||||
生物種 | ![]() ![]() synthetic construct (人工物) | ||||||||||||||||||||||||
手法 | 電子顕微鏡法 / 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度: 3.11 Å | ||||||||||||||||||||||||
![]() | Mattarocci, S. / Baconnais, S. / Roisne-Hamelin, F. / Pobiega, S. / Alibert, O. / Morin, V. / Deshayes, A. / Veaute, X. / Ropars, V. / Mazon, G. ...Mattarocci, S. / Baconnais, S. / Roisne-Hamelin, F. / Pobiega, S. / Alibert, O. / Morin, V. / Deshayes, A. / Veaute, X. / Ropars, V. / Mazon, G. / Busso, D. / Fernandez Varela, P. / Le Cam, E. / Charbonnier, J. / Cuniasse, P. / Marcand, S. | ||||||||||||||||||||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Restriction of Ku translocation protects telomere ends. 著者: Stefano Mattarocci / Sonia Baconnais / Florian Roisné-Hamelin / Sabrina Pobiega / Olivier Alibert / Vincent Morin / Alice Deshayes / Xavier Veaute / Virginie Ropars / Maelenn Chevreuil / ...著者: Stefano Mattarocci / Sonia Baconnais / Florian Roisné-Hamelin / Sabrina Pobiega / Olivier Alibert / Vincent Morin / Alice Deshayes / Xavier Veaute / Virginie Ropars / Maelenn Chevreuil / Johannes Mehringer / Didier Busso / Gerard Mazon / Paloma Fernandez Varela / Éric Le Cam / Jean-Baptiste Charbonnier / Philippe Cuniasse / Stéphane Marcand / ![]() ![]() 要旨: Safeguarding chromosome ends against fusions via nonhomologous end joining (NHEJ) is essential for genome integrity. Paradoxically, the conserved NHEJ core factor Ku binds telomere ends. How it is ...Safeguarding chromosome ends against fusions via nonhomologous end joining (NHEJ) is essential for genome integrity. Paradoxically, the conserved NHEJ core factor Ku binds telomere ends. How it is prevented from promoting NHEJ remains unclear, as does the mechanism that allows Ku to coexist with telomere-protective DNA binding proteins, Rap1 in Saccharomyces cerevisiae. Here, we find that Rap1 directly inhibits Ku's NHEJ function at telomeres. A single Rap1 molecule near a double-stand break suppresses NHEJ without displacing Ku in cells. Furthermore, Rap1 and Ku form a complex on short DNA duplexes in vitro. Cryo-EM shows Rap1 blocks Ku's inward translocation on DNA - an essential step for NHEJ at DSBs. Nanopore sequencing of telomere fusions confirms this mechanism protects native telomere ends. These findings uncover a telomere protection mechanism where Rap1 restricts Ku's inward translocation. This switches Ku from a repair-promoting to a protective role preventing NHEJ at telomeres. | ||||||||||||||||||||||||
履歴 |
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構造の表示
構造ビューア | 分子: ![]() ![]() |
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ダウンロード
PDBx/mmCIF形式 | ![]() | 316.6 KB | 表示 | ![]() |
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PDB形式 | ![]() | 246.9 KB | 表示 | ![]() |
PDBx/mmJSON形式 | ![]() | ツリー表示 | ![]() | |
その他 | ![]() |
-検証レポート
文書・要旨 | ![]() | 1.2 MB | 表示 | ![]() |
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文書・詳細版 | ![]() | 1.2 MB | 表示 | |
XML形式データ | ![]() | 60.6 KB | 表示 | |
CIF形式データ | ![]() | 89.9 KB | 表示 | |
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
-関連構造データ
関連構造データ | ![]() 19811MC ![]() 8s82C C: 同じ文献を引用 ( M: このデータのモデリングに利用したマップデータ |
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類似構造データ | 類似検索 - 機能・相同性 ![]() |
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リンク
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集合体
登録構造単位 | ![]()
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要素
#1: DNA鎖 | 分子量: 6244.084 Da / 分子数: 1 / 由来タイプ: 合成 / 由来: (合成) synthetic construct (人工物) |
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#2: DNA鎖 | 分子量: 6643.248 Da / 分子数: 1 / 由来タイプ: 合成 / 由来: (合成) synthetic construct (人工物) |
#3: タンパク質 | 分子量: 65531.449 Da / 分子数: 1 / 由来タイプ: 組換発現 由来: (組換発現) ![]() ![]() 遺伝子: YKU70, HDF1, NES24, YMR284W, YM8021.10 / 発現宿主: ![]() ![]() |
#4: タンパク質 | 分子量: 66469.398 Da / 分子数: 1 / 由来タイプ: 組換発現 由来: (組換発現) ![]() ![]() 遺伝子: YKU80, HDF2, YMR106C, YM9718.05C / 発現宿主: ![]() ![]() |
#5: タンパク質 | 分子量: 28368.781 Da / 分子数: 1 / 由来タイプ: 組換発現 由来: (組換発現) ![]() ![]() 遺伝子: RAP1, GRF1, TUF1, YNL216W, N1310 / 発現宿主: ![]() ![]() |
Has protein modification | N |
-実験情報
-実験
実験 | 手法: 電子顕微鏡法 |
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EM実験 | 試料の集合状態: PARTICLE / 3次元再構成法: 単粒子再構成法 |
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試料調製
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由来(天然) |
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緩衝液 | pH: 8 / 詳細: Tris-HCL 10mM, Nacl 50 mM, pH 8.04 | ||||||||||||||||||||||||
試料 | 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES | ||||||||||||||||||||||||
急速凍結 | 凍結剤: ETHANE |
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電子顕微鏡撮影
実験機器 | ![]() モデル: Titan Krios / 画像提供: FEI Company |
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顕微鏡 | モデル: TFS KRIOS |
電子銃 | 電子線源: ![]() |
電子レンズ | モード: BRIGHT FIELD / 最大 デフォーカス(公称値): 750 nm / 最小 デフォーカス(公称値): 250 nm |
撮影 | 電子線照射量: 52 e/Å2 / フィルム・検出器のモデル: GATAN K3 (6k x 4k) |
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解析
EMソフトウェア |
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CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | |||||||||||||||||||||||||
粒子像の選択 | 選択した粒子像数: 1544386 | |||||||||||||||||||||||||
対称性 | 点対称性: C1 (非対称) | |||||||||||||||||||||||||
3次元再構成 | 解像度: 3.11 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 436644 / 対称性のタイプ: POINT | |||||||||||||||||||||||||
原子モデル構築 | プロトコル: FLEXIBLE FIT / 空間: REAL 詳細: Initial Fitting of the model in the cryo-EM map was achieved using ChimeraX and this structure served as starting point for MDFF refinement (Flexible fitting) using NAMD 2.14. | |||||||||||||||||||||||||
原子モデル構築 | 詳細: Model build using PDB entries 5Y58 and 3UKG / Source name: Other / タイプ: in silico model | |||||||||||||||||||||||||
拘束条件 |
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