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基本情報
登録情報 | ![]() | |||||||||
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タイトル | RAD51 nucleoprotein filament on abasic single-stranded DNA | |||||||||
![]() | post-processed map | |||||||||
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![]() | Homologous recombination / DNA replication / abasic DNA / DNA BINDING PROTEIN | |||||||||
機能・相同性 | ![]() presynaptic intermediate filament cytoskeleton / response to glucoside / mitotic recombination-dependent replication fork processing / chromosome organization involved in meiotic cell cycle / DNA recombinase assembly / cellular response to camptothecin / 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 / chromosome organization involved in meiotic cell cycle / DNA recombinase assembly / cellular response to camptothecin / 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 / reciprocal meiotic recombination / single-stranded DNA helicase activity / 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 / male germ cell nucleus / condensed nuclear chromosome / meiotic cell cycle / cellular response to ionizing radiation / double-strand break repair via homologous recombination / cellular response to gamma radiation / PML body / Meiotic recombination / HDR through Homologous Recombination (HRR) / response to toxic substance / 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 / centrosome / DNA damage response / chromatin binding / chromatin / nucleolus / perinuclear region of cytoplasm / enzyme binding / protein-containing complex / ATP hydrolysis activity / mitochondrion / nucleoplasm / ATP binding / identical protein binding / nucleus / cytosol / cytoplasm 類似検索 - 分子機能 | |||||||||
生物種 | ![]() | |||||||||
手法 | らせん対称体再構成法 / クライオ電子顕微鏡法 / 解像度: 3.2 Å | |||||||||
![]() | Appleby R / Pellegrini L | |||||||||
資金援助 | ![]()
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![]() | ![]() タイトル: RAD51 protects abasic sites to prevent replication fork breakage. 著者: Yodhara Wijesekara Hanthi / Miguel Angel Ramirez-Otero / Robert Appleby / Anna De Antoni / Luay Joudeh / Vincenzo Sannino / Salli Waked / Alessandra Ardizzoia / Viviana Barra / Daniele ...著者: Yodhara Wijesekara Hanthi / Miguel Angel Ramirez-Otero / Robert Appleby / Anna De Antoni / Luay Joudeh / Vincenzo Sannino / Salli Waked / Alessandra Ardizzoia / Viviana Barra / Daniele Fachinetti / Luca Pellegrini / Vincenzo Costanzo / ![]() ![]() ![]() 要旨: Abasic sites are DNA lesions repaired by base excision repair. Cleavage of unrepaired abasic sites in single-stranded DNA (ssDNA) can lead to chromosomal breakage during DNA replication. How rupture ...Abasic sites are DNA lesions repaired by base excision repair. Cleavage of unrepaired abasic sites in single-stranded DNA (ssDNA) can lead to chromosomal breakage during DNA replication. How rupture of abasic DNA is prevented remains poorly understood. Here, using cryoelectron microscopy (cryo-EM), Xenopus laevis egg extracts, and human cells, we show that RAD51 nucleofilaments specifically recognize and protect abasic sites, which increase RAD51 association rate to DNA. In the absence of BRCA2 or RAD51, abasic sites accumulate as a result of DNA base methylation, oxidation, and deamination, inducing abasic ssDNA gaps that make replicating DNA fibers sensitive to APE1. RAD51 assembled on abasic DNA prevents abasic site cleavage by the MRE11-RAD50 complex, suppressing replication fork breakage triggered by an excess of abasic sites or POLθ polymerase inhibition. Our study highlights the critical role of BRCA2 and RAD51 in safeguarding against unrepaired abasic sites in DNA templates stemming from base alterations, ensuring genomic stability. | |||||||||
履歴 |
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構造の表示
添付画像 |
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ダウンロードとリンク
-EMDBアーカイブ
マップデータ | ![]() | 28.6 MB | ![]() | |
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ヘッダ (付随情報) | ![]() ![]() | 22.3 KB 22.3 KB | 表示 表示 | ![]() |
画像 | ![]() | 110.3 KB | ||
Filedesc metadata | ![]() | 7.3 KB | ||
その他 | ![]() ![]() | 23.5 MB 23.5 MB | ||
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
-検証レポート
文書・要旨 | ![]() | 899.4 KB | 表示 | ![]() |
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文書・詳細版 | ![]() | 899 KB | 表示 | |
XML形式データ | ![]() | 10.7 KB | 表示 | |
CIF形式データ | ![]() | 12.6 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 | ![]() 8rcdMC ![]() 8rcfC M: このマップから作成された原子モデル 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
EMDBのページ | ![]() ![]() |
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「今月の分子」の関連する項目 |
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マップ
ファイル | ![]() | ||||||||||||||||||||||||||||||||||||
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注釈 | post-processed map | ||||||||||||||||||||||||||||||||||||
投影像・断面図 | 画像のコントロール
画像は Spider により作成 | ||||||||||||||||||||||||||||||||||||
ボクセルのサイズ | X=Y=Z: 1.304 Å | ||||||||||||||||||||||||||||||||||||
密度 |
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対称性 | 空間群: 1 | ||||||||||||||||||||||||||||||||||||
詳細 | EMDB XML:
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-添付データ
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試料の構成要素
-全体 : RAD51 nucleoprotein filament
全体 | 名称: RAD51 nucleoprotein filament |
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要素 |
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-超分子 #1: RAD51 nucleoprotein filament
超分子 | 名称: RAD51 nucleoprotein filament / タイプ: complex / ID: 1 / 親要素: 0 / 含まれる分子: #1-#2 詳細: RAD51 nucleoprotein filament on abasic single-stranded DNA |
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由来(天然) | 生物種: ![]() |
-分子 #1: DNA repair protein RAD51 homolog 1
分子 | 名称: DNA repair protein RAD51 homolog 1 / タイプ: protein_or_peptide / ID: 1 / コピー数: 8 / 光学異性体: LEVO |
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由来(天然) | 生物種: ![]() |
分子量 | 理論値: 37.009125 KDa |
組換発現 | 生物種: ![]() ![]() |
配列 | 文字列: MAMQMQLEAN ADTSVEEESF GPQPISRLEQ CGINANDVKK LEEAGFHTVE AVAYAPKKEL INIKGISEAK ADKILAEAAK LVPMGFTTA TEFHQRRSEI IQITTGSKEL DKLLQGGIET GSITEMFGEF RTGKTQICHT LAVTCQLPID RGGGEGKAMY I DTEGTFRP ...文字列: MAMQMQLEAN ADTSVEEESF GPQPISRLEQ CGINANDVKK LEEAGFHTVE AVAYAPKKEL INIKGISEAK ADKILAEAAK LVPMGFTTA TEFHQRRSEI IQITTGSKEL DKLLQGGIET GSITEMFGEF RTGKTQICHT LAVTCQLPID RGGGEGKAMY I DTEGTFRP ERLLAVAERY GLSGSDVLDN VAYARAFNTD HQTQLLYQAS AMMVESRYAL LIVDSATALY RTDYSGRGEL SA RQMHLAR FLRMLLRLAD EFGVAVVITN QVVAQVDGAA MFAADPKKPI GGNIIAHAST TRLYLRKGRG ETRICKIYDS PCL PEAEAM FAINADGVGD AKD UniProtKB: DNA repair protein RAD51 homolog 1 |
-分子 #2: DNA (5'-D(P*GP*GP*(3DR)P*AP*TP*(3DR)P*CP*AP*(3DR)P*TP*GP*(3DR)P*T...
分子 | 名称: DNA (5'-D(P*GP*GP*(3DR)P*AP*TP*(3DR)P*CP*AP*(3DR)P*TP*GP*(3DR)P*TP*AP*(3DR)P*AP*CP*(3DR)P*TP*GP*(3DR)P*GP*C)-3') タイプ: dna / ID: 2 詳細: 3DR refers to an abasic nucleotide. The DNA oligonucleotide was chemically synthesised to contain 7 regularly spaced abasic sites. The ribose of the abasic nucleotide is a tetrahydrofurane ...詳細: 3DR refers to an abasic nucleotide. The DNA oligonucleotide was chemically synthesised to contain 7 regularly spaced abasic sites. The ribose of the abasic nucleotide is a tetrahydrofurane lacking the hydroxyl group that would naturally be present on position C1 after base hydrolysis. コピー数: 1 / 分類: DNA |
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由来(天然) | 生物種: ![]() |
分子量 | 理論値: 6.198886 KDa |
配列 | 文字列: (DG)(DG)(3DR)(DA)(DT)(3DR)(DC)(DA)(3DR)(DT) (DG)(3DR)(DT)(DA)(3DR)(DA)(DC)(3DR) (DT) (DG)(3DR)(DG)(DC) |
-分子 #3: ADENOSINE-5'-TRIPHOSPHATE
分子 | 名称: ADENOSINE-5'-TRIPHOSPHATE / タイプ: ligand / ID: 3 / コピー数: 8 / 式: ATP |
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分子量 | 理論値: 507.181 Da |
Chemical component information | ![]() ChemComp-ATP: |
-分子 #4: CALCIUM ION
分子 | 名称: CALCIUM ION / タイプ: ligand / ID: 4 / コピー数: 16 / 式: CA |
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分子量 | 理論値: 40.078 Da |
-実験情報
-構造解析
手法 | クライオ電子顕微鏡法 |
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![]() | らせん対称体再構成法 |
試料の集合状態 | filament |
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試料調製
緩衝液 | pH: 7.5 |
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グリッド | モデル: Quantifoil R1.2/1.3 / 材質: GOLD / メッシュ: 300 / 前処理 - タイプ: GLOW DISCHARGE / 前処理 - 時間: 60 sec. |
凍結 | 凍結剤: ETHANE |
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電子顕微鏡法
顕微鏡 | FEI TITAN KRIOS |
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撮影 | フィルム・検出器のモデル: GATAN K3 (6k x 4k) / 実像数: 10623 / 平均露光時間: 1.33 sec. / 平均電子線量: 55.195 e/Å2 詳細: Images were collected in movie-mode at 49 frames per movie |
電子線 | 加速電圧: 300 kV / 電子線源: ![]() |
電子光学系 | 照射モード: FLOOD BEAM / 撮影モード: BRIGHT FIELD / 最大 デフォーカス(公称値): 2.6 µm / 最小 デフォーカス(公称値): 0.8 µm / 倍率(公称値): 130000 |
試料ステージ | ホルダー冷却材: NITROGEN |
実験機器 | ![]() モデル: Titan Krios / 画像提供: FEI Company |