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基本情報
登録情報 | データベース: PDB / ID: 8faz | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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タイトル | Cryo-EM structure of the human BCDX2 complex | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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![]() | RECOMBINATION / DNA binding protein / ATP binding domain / homologous recombination / RAD51 paralog | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
機能・相同性 | ![]() meiotic DNA recombinase assembly / Rad51C-XRCC3 complex / Rad51B-Rad51C-Rad51D-XRCC2 complex / female meiosis sister chromatid cohesion / blastocyst growth / crossover junction DNA endonuclease activity / somite development / DNA strand invasion / Impaired BRCA2 binding to PALB2 / male meiosis I ...meiotic DNA recombinase assembly / Rad51C-XRCC3 complex / Rad51B-Rad51C-Rad51D-XRCC2 complex / female meiosis sister chromatid cohesion / blastocyst growth / crossover junction DNA endonuclease activity / somite development / DNA strand invasion / Impaired BRCA2 binding to PALB2 / male meiosis I / telomere maintenance via recombination / gamma-tubulin binding / reciprocal meiotic recombination / regulation of fibroblast apoptotic process / centrosome cycle / positive regulation of neurogenesis / sister chromatid cohesion / 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 / ATP-dependent DNA damage sensor activity / microtubule organizing center / Presynaptic phase of homologous DNA pairing and strand exchange / response to X-ray / positive regulation of G2/M transition of mitotic cell cycle / ATP-dependent activity, acting on DNA / somitogenesis / interstrand cross-link repair / neurogenesis / telomere maintenance / replication fork / meiotic cell cycle / double-strand break repair via homologous recombination / response to gamma radiation / TP53 Regulates Transcription of DNA Repair Genes / HDR through Homologous Recombination (HRR) / Meiotic recombination / multicellular organism growth / cell junction / mitotic cell cycle / single-stranded DNA binding / Factors involved in megakaryocyte development and platelet production / double-stranded DNA binding / spermatogenesis / DNA recombination / in utero embryonic development / negative regulation of neuron apoptotic process / chromosome, telomeric region / regulation of cell cycle / DNA repair / intracellular membrane-bounded organelle / positive regulation of cell population proliferation / centrosome / perinuclear region of cytoplasm / ATP hydrolysis activity / mitochondrion / DNA binding / nucleoplasm / ATP binding / nucleus / cytosol / cytoplasm 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: 2.3 Å | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
![]() | Jia, L. / Wasmuth, E.V. / Ruben, E.A. / Sung, P. / Rawal, Y. / Greene, E.C. / Meir, A. / Olsen, S.K. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Structural insights into BCDX2 complex function in homologous recombination. 著者: Yashpal Rawal / Lijia Jia / Aviv Meir / Shuo Zhou / Hardeep Kaur / Eliza A Ruben / Youngho Kwon / Kara A Bernstein / Maria Jasin / Alexander B Taylor / Sandeep Burma / Robert Hromas / ...著者: Yashpal Rawal / Lijia Jia / Aviv Meir / Shuo Zhou / Hardeep Kaur / Eliza A Ruben / Youngho Kwon / Kara A Bernstein / Maria Jasin / Alexander B Taylor / Sandeep Burma / Robert Hromas / Alexander V Mazin / Weixing Zhao / Daohong Zhou / Elizabeth V Wasmuth / Eric C Greene / Patrick Sung / Shaun K Olsen / ![]() 要旨: Homologous recombination (HR) fulfils a pivotal role in the repair of DNA double-strand breaks and collapsed replication forks. HR depends on the products of several paralogues of RAD51, including ...Homologous recombination (HR) fulfils a pivotal role in the repair of DNA double-strand breaks and collapsed replication forks. HR depends on the products of several paralogues of RAD51, including the tetrameric complex of RAD51B, RAD51C, RAD51D and XRCC2 (BCDX2). BCDX2 functions as a mediator of nucleoprotein filament assembly by RAD51 and single-stranded DNA (ssDNA) during HR, but its mechanism remains undefined. Here we report cryogenic electron microscopy reconstructions of human BCDX2 in apo and ssDNA-bound states. The structures reveal how the amino-terminal domains of RAD51B, RAD51C and RAD51D participate in inter-subunit interactions that underpin complex formation and ssDNA-binding specificity. Single-molecule DNA curtain analysis yields insights into how BCDX2 enhances RAD51-ssDNA nucleoprotein filament assembly. Moreover, our cryogenic electron microscopy and functional analyses explain how RAD51C alterations found in patients with cancer inactivate DNA binding and the HR mediator activity of BCDX2. Our findings shed light on the role of BCDX2 in HR and provide a foundation for understanding how pathogenic alterations in BCDX2 impact genome repair. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
履歴 |
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構造の表示
構造ビューア | 分子: ![]() ![]() |
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ダウンロードとリンク
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ダウンロード
PDBx/mmCIF形式 | ![]() | 205.2 KB | 表示 | ![]() |
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PDB形式 | ![]() | 153.1 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 | ![]() | 1.6 MB | 表示 | ![]() |
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文書・詳細版 | ![]() | 1.6 MB | 表示 | |
XML形式データ | ![]() | 40.6 KB | 表示 | |
CIF形式データ | ![]() | 60.9 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 | ![]() 28961MC ![]() 8gbjC 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
-DNA repair protein RAD51 homolog ... , 3種, 3分子 BCD
#1: タンパク質 | 分子量: 39125.855 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() |
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#2: タンパク質 | 分子量: 42244.609 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() |
#3: タンパク質 | 分子量: 35084.254 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() |
-タンパク質 , 1種, 1分子 X
#4: タンパク質 | 分子量: 32992.488 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() |
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-非ポリマー , 3種, 5分子 




#5: 化合物 | ChemComp-ADP / | ||
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#6: 化合物 | #7: 化合物 | |
-詳細
研究の焦点であるリガンドがあるか | Y |
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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
構成要素 | 名称: Cryo-EM structure of the human heterotetrameric BCDX2 complex タイプ: COMPLEX / Entity ID: #1-#4 / 由来: RECOMBINANT |
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分子量 | 実験値: NO |
由来(天然) | 生物種: ![]() |
由来(組換発現) | 生物種: ![]() |
緩衝液 | pH: 7.5 |
試料 | 濃度: 0.9 mg/ml / 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
顕微鏡 | モデル: TFS GLACIOS |
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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): 2000 nm / 最小 デフォーカス(公称値): 800 nm / Cs: 2.7 mm / C2レンズ絞り径: 50 µm |
撮影 | 電子線照射量: 51 e/Å2 フィルム・検出器のモデル: FEI FALCON IV (4k x 4k) |
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解析
ソフトウェア | 名称: PHENIX / バージョン: 1.20.1_4487: / 分類: 精密化 | ||||||||||||||||||||||||
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EMソフトウェア | 名称: PHENIX / カテゴリ: モデル精密化 | ||||||||||||||||||||||||
CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||
3次元再構成 | 解像度: 2.3 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 489073 / 対称性のタイプ: POINT | ||||||||||||||||||||||||
拘束条件 |
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