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基本情報
登録情報 | データベース: PDB / ID: 9njk | ||||||||||||||||||||||||
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タイトル | The Cryo-EM structure of the yeast Rad51-ssDNA nucleoprotein filament ADP bound state | ||||||||||||||||||||||||
![]() | DNA repair protein RAD51 | ||||||||||||||||||||||||
![]() | DNA BINDING PROTEIN / DNA Repair / Homologous Recombination | ||||||||||||||||||||||||
機能・相同性 | ![]() Presynaptic phase of homologous DNA pairing and strand exchange / heteroduplex formation / meiotic joint molecule formation / mitochondrial chromosome / mitotic recombination-dependent replication fork processing / DNA recombinase assembly / chromosome organization involved in meiotic cell cycle / DNA strand invasion / mitotic recombination / DNA strand exchange activity ...Presynaptic phase of homologous DNA pairing and strand exchange / heteroduplex formation / meiotic joint molecule formation / mitochondrial chromosome / mitotic recombination-dependent replication fork processing / DNA recombinase assembly / chromosome organization involved in meiotic cell cycle / DNA strand invasion / mitotic recombination / DNA strand exchange activity / telomere maintenance via recombination / reciprocal meiotic recombination / mitochondrial DNA repair / ATP-dependent DNA damage sensor activity / nuclear chromosome / ATP-dependent activity, acting on DNA / condensed nuclear chromosome / double-strand break repair via homologous recombination / nucleotide-excision repair / G2/M transition of mitotic cell cycle / double-strand break repair / single-stranded DNA binding / double-stranded DNA binding / DNA recombination / mitochondrial matrix / ATP hydrolysis activity / DNA binding / ATP binding / identical protein binding 類似検索 - 分子機能 | ||||||||||||||||||||||||
生物種 | ![]() ![]() | ||||||||||||||||||||||||
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: 3.37 Å | ||||||||||||||||||||||||
![]() | Shin, Y. / Greene, E.C. | ||||||||||||||||||||||||
資金援助 | ![]()
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![]() | ![]() タイトル: ATP hydrolysis-driven structural transitions within the Saccharomyces cerevisiae Rad51 and Dmc1 nucleoprotein filaments. 著者: Yeonoh Shin / Stefan Y Kim / Eric C Greene / ![]() 要旨: Homologous recombination (HR) is essential for the maintenance of genome stability and for generating genetic diversity during meiosis. The eukaryotic protein Rad51 is member of the Rad51/RecA family ...Homologous recombination (HR) is essential for the maintenance of genome stability and for generating genetic diversity during meiosis. The eukaryotic protein Rad51 is member of the Rad51/RecA family of DNA recombinases and is responsible for guiding the DNA pairing reactions that take place in HR during mitosis. Dmc1 is a meiosis-specific paralog of Rad51 and is responsible for the DNA pairing reactions that take place in HR during meiosis. Rad51 and Dmc1 are both ATP-dependent DNA-binding proteins and both form extended helical filaments on ssDNA, which are key intermediates in HR. The stability of these nucleoprotein filaments is highly regulated and is also tightly coupled to nucleotide binding and hydrolysis. ATP binding promotes filament assembly, whereas the hydrolysis of ATP to ADP reduces filament stability to promote filament disassembly. Here, we present cryo-EM structures of the Saccharomyces cerevisiae recombinases Rad51 and Dmc1 in the ADP-bound states and provide a detailed structural comparison to the ATP-bound filaments. Our findings yield insights into the structural transitions that take place during the hydrolysis of ATP to ADP and suggest a new model for how these structural changes may be linked to nucleoprotein filament disassembly. | ||||||||||||||||||||||||
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構造の表示
構造ビューア | 分子: ![]() ![]() |
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PDBx/mmCIF形式 | ![]() | 311.6 KB | 表示 | ![]() |
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PDB形式 | ![]() | 253.3 KB | 表示 | ![]() |
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その他 | ![]() |
-検証レポート
文書・要旨 | ![]() | 1.5 MB | 表示 | ![]() |
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文書・詳細版 | ![]() | 1.5 MB | 表示 | |
XML形式データ | ![]() | 59.5 KB | 表示 | |
CIF形式データ | ![]() | 88.3 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 | ![]() 49485MC ![]() 9njrC 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 ![]() |
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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: 43007.328 Da / 分子数: 6 / 由来タイプ: 組換発現 由来: (組換発現) ![]() ![]() 遺伝子: RAD51, YER095W / 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 | N | Has protein modification | N | |
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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: 単粒子再構成法 |
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試料調製
構成要素 | 名称: Cryo-EM structure of yeast Rad51 - ssDNA nucleoprotein filament ADP bound state タイプ: COMPLEX / Entity ID: #1 / 由来: RECOMBINANT |
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由来(天然) | 生物種: ![]() ![]() |
由来(組換発現) | 生物種: ![]() ![]() |
緩衝液 | pH: 7.5 |
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 IV / 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: TFS KRIOS |
電子銃 | 電子線源: OTHER / 加速電圧: 300 kV / 照射モード: OTHER |
電子レンズ | モード: OTHER / 最大 デフォーカス(公称値): 1750 nm / 最小 デフォーカス(公称値): 750 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
CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||
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3次元再構成 | 解像度: 3.37 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 330601 / 対称性のタイプ: POINT | ||||||||||||||||||||||||
精密化 | 最高解像度: 3.37 Å 立体化学のターゲット値: REAL-SPACE (WEIGHTED MAP SUM AT ATOM CENTERS) | ||||||||||||||||||||||||
拘束条件 |
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