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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: 8gyk | ||||||
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| タイトル | CryoEM structure of the RAD51_ADP filament | ||||||
要素 | DNA repair protein RAD51 homolog 1 | ||||||
キーワード | RECOMBINATION / Recombinase / ATPase / DNA repair protein / DNA binding | ||||||
| 機能・相同性 | 機能・相同性情報presynaptic intermediate filament cytoskeleton / response to glucoside / mitotic recombination-dependent replication fork processing / DNA recombinase assembly / cellular response to camptothecin / chromosome organization involved in meiotic cell cycle / telomere maintenance via telomere lengthening / double-strand break repair involved in meiotic recombination / nuclear ubiquitin ligase complex / cellular response to cisplatin ...presynaptic intermediate filament cytoskeleton / response to glucoside / mitotic recombination-dependent replication fork processing / DNA recombinase assembly / cellular response to camptothecin / chromosome organization involved in meiotic cell cycle / telomere maintenance via telomere lengthening / double-strand break repair involved in meiotic recombination / nuclear ubiquitin ligase complex / cellular response to cisplatin / DNA strand invasion / cellular response to hydroxyurea / mitotic recombination / DNA strand exchange activity / replication-born double-strand break repair via sister chromatid exchange / lateral element / regulation of DNA damage checkpoint / Impaired BRCA2 binding to PALB2 / telomere maintenance via recombination / single-stranded DNA helicase activity / reciprocal meiotic recombination / Homologous DNA Pairing and Strand Exchange / 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 / Resolution of D-loop Structures through Synthesis-Dependent Strand Annealing (SDSA) / Resolution of D-loop Structures through Holliday Junction Intermediates / HDR through Single Strand Annealing (SSA) / regulation of double-strand break repair via homologous recombination / ATP-dependent DNA damage sensor activity / nuclear chromosome / Impaired BRCA2 binding to RAD51 / Transcriptional Regulation by E2F6 / replication fork processing / Presynaptic phase of homologous DNA pairing and strand exchange / response to X-ray / ATP-dependent activity, acting on DNA / interstrand cross-link repair / condensed chromosome / DNA polymerase binding / condensed nuclear chromosome / cellular response to ionizing radiation / meiotic cell cycle / male germ cell nucleus / cellular response to gamma radiation / double-strand break repair via homologous recombination / PML body / HDR through Homologous Recombination (HRR) / response to toxic substance / Meiotic recombination / single-stranded DNA binding / site of double-strand break / double-stranded DNA binding / DNA recombination / chromosome, telomeric region / mitochondrial matrix / response to xenobiotic stimulus / DNA repair / DNA damage response / centrosome / chromatin binding / chromatin / nucleolus / perinuclear region of cytoplasm / enzyme binding / protein-containing complex / ATP hydrolysis activity / mitochondrion / nucleoplasm / ATP binding / identical protein binding / nucleus / cytoplasm / cytosol 類似検索 - 分子機能 | ||||||
| 生物種 | Homo sapiens (ヒト) | ||||||
| 手法 | 電子顕微鏡法 / らせん対称体再構成法 / クライオ電子顕微鏡法 / 解像度: 3.14 Å | ||||||
データ登録者 | Miki, Y. / Luo, S.C. / Ho, M.C. | ||||||
| 資金援助 | 台湾, 1件
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引用 | ジャーナル: Nat Commun / 年: 2023タイトル: A RAD51-ADP double filament structure unveils the mechanism of filament dynamics in homologous recombination. 著者: Shih-Chi Luo / Min-Chi Yeh / Yu-Hsiang Lien / Hsin-Yi Yeh / Huei-Lun Siao / I-Ping Tu / Peter Chi / Meng-Chiao Ho / ![]() 要旨: ATP-dependent RAD51 recombinases play an essential role in eukaryotic homologous recombination by catalyzing a four-step process: 1) formation of a RAD51 single-filament assembly on ssDNA in the ...ATP-dependent RAD51 recombinases play an essential role in eukaryotic homologous recombination by catalyzing a four-step process: 1) formation of a RAD51 single-filament assembly on ssDNA in the presence of ATP, 2) complementary DNA strand-exchange, 3) ATP hydrolysis transforming the RAD51 filament into an ADP-bound disassembly-competent state, and 4) RAD51 disassembly to provide access for DNA repairing enzymes. Of these steps, filament dynamics between the ATP- and ADP-bound states, and the RAD51 disassembly mechanism, are poorly understood due to the lack of near-atomic-resolution information of the ADP-bound RAD51-DNA filament structure. We report the cryo-EM structure of ADP-bound RAD51-DNA filaments at 3.1 Å resolution, revealing a unique RAD51 double-filament that wraps around ssDNA. Structural analysis, supported by ATP-chase and time-resolved cryo-EM experiments, reveals a collapsing mechanism involving two four-protomer movements along ssDNA for mechanical transition between RAD51 single- and double-filament without RAD51 dissociation. This mechanism enables elastic change of RAD51 filament length during structural transitions between ATP- and ADP-states. | ||||||
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構造の表示
| 構造ビューア | 分子: Molmil Jmol/JSmol |
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ダウンロードとリンク
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ダウンロード
| PDBx/mmCIF形式 | 8gyk.cif.gz | 395 KB | 表示 | PDBx/mmCIF形式 |
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| PDB形式 | pdb8gyk.ent.gz | 327.1 KB | 表示 | PDB形式 |
| PDBx/mmJSON形式 | 8gyk.json.gz | ツリー表示 | PDBx/mmJSON形式 | |
| その他 | その他のダウンロード |
-検証レポート
| 文書・要旨 | 8gyk_validation.pdf.gz | 1.7 MB | 表示 | wwPDB検証レポート |
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| 文書・詳細版 | 8gyk_full_validation.pdf.gz | 1.8 MB | 表示 | |
| XML形式データ | 8gyk_validation.xml.gz | 84.7 KB | 表示 | |
| CIF形式データ | 8gyk_validation.cif.gz | 121.4 KB | 表示 | |
| アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/gy/8gyk ftp://data.pdbj.org/pub/pdb/validation_reports/gy/8gyk | HTTPS FTP |
-関連構造データ
| 関連構造データ | ![]() 34372MC M: このデータのモデリングに利用したマップデータ C: 同じ文献を引用 ( |
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| 類似構造データ | 類似検索 - 機能・相同性 F&H 検索 |
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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: タンパク質 | 分子量: 37009.125 Da / 分子数: 8 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: RAD51, RAD51A, RECA / 発現宿主: ![]() #2: 化合物 | ChemComp-ADP / #3: 化合物 | ChemComp-MG / 研究の焦点であるリガンドがあるか | Y | |
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-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: FILAMENT / 3次元再構成法: らせん対称体再構成法 |
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試料調製
| 構成要素 | 名称: hRAD51-ADP filament intermediate / タイプ: COMPLEX 詳細: hRAD51 protein filament assembled in the presence of ADP and single strand DNA Entity ID: #1 / 由来: RECOMBINANT |
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| 由来(天然) | 生物種: Homo sapiens (ヒト) |
| 由来(組換発現) | 生物種: ![]() |
| 緩衝液 | pH: 7.4 |
| 試料 | 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES |
| 急速凍結 | 装置: FEI VITROBOT MARK III / 凍結剤: ETHANE / 湿度: 100 % |
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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: FEI TITAN KRIOS |
| 電子銃 | 電子線源: FIELD EMISSION GUN / 加速電圧: 300 kV / 照射モード: FLOOD BEAM |
| 電子レンズ | モード: BRIGHT FIELD / 最大 デフォーカス(公称値): 2000 nm / 最小 デフォーカス(公称値): 1000 nm |
| 撮影 | 電子線照射量: 50 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 | 名称: PHENIX / バージョン: 1.20.1_4487: / カテゴリ: モデル精密化 | ||||||||||||||||||||||||
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| CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||
| らせん対称 | 回転角度/サブユニット: 48.68 ° / 軸方向距離/サブユニット: 19.6 Å / らせん対称軸の対称性: C1 | ||||||||||||||||||||||||
| 3次元再構成 | 解像度: 3.14 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 2622222 / 対称性のタイプ: HELICAL | ||||||||||||||||||||||||
| 精密化 | 最高解像度: 3.14 Å | ||||||||||||||||||||||||
| 拘束条件 |
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万見について




Homo sapiens (ヒト)
台湾, 1件
引用

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FIELD EMISSION GUN