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基本情報
登録情報 | データベース: PDB / ID: 9bi4 | ||||||
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タイトル | cryo EM structure of dsDNA bound Mre11-Rad50 complex | ||||||
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![]() | DNA BINDING PROTEIN / MRN / Mre11 / Rad50 / Nbs1 / DNA binding / DNA damage / DNA repair | ||||||
機能・相同性 | ![]() DNA double-strand break processing involved in repair via synthesis-dependent strand annealing / nucleoside monophosphate phosphorylation / Cytosolic sensors of pathogen-associated DNA / meiotic DNA double-strand break formation involved in reciprocal meiotic recombination / mitochondrial double-strand break repair via homologous recombination / DNA Damage/Telomere Stress Induced Senescence / Sensing of DNA Double Strand Breaks / Mre11 complex / meiotic DNA double-strand break formation / ascospore formation ...DNA double-strand break processing involved in repair via synthesis-dependent strand annealing / nucleoside monophosphate phosphorylation / Cytosolic sensors of pathogen-associated DNA / meiotic DNA double-strand break formation involved in reciprocal meiotic recombination / mitochondrial double-strand break repair via homologous recombination / DNA Damage/Telomere Stress Induced Senescence / Sensing of DNA Double Strand Breaks / Mre11 complex / meiotic DNA double-strand break formation / ascospore formation / R-loop processing / 加水分解酵素; 酸無水物に作用 / chromosome organization involved in meiotic cell cycle / single-stranded DNA endodeoxyribonuclease activity / homologous chromosome pairing at meiosis / AMP kinase activity / double-stranded telomeric DNA binding / maintenance of DNA trinucleotide repeats / G-quadruplex DNA binding / 3'-5'-DNA exonuclease activity / DNA double-strand break processing / single-stranded telomeric DNA binding / telomere maintenance via recombination / Recruitment and ATM-mediated phosphorylation of repair and signaling proteins at DNA double strand breaks / double-strand break repair via break-induced replication / reciprocal meiotic recombination / mitotic intra-S DNA damage checkpoint signaling / telomeric DNA binding / mitotic G2 DNA damage checkpoint signaling / telomere maintenance via telomerase / 3'-5' exonuclease activity / telomere maintenance / condensed nuclear chromosome / DNA endonuclease activity / meiotic cell cycle / double-strand break repair via homologous recombination / base-excision repair / double-strand break repair via nonhomologous end joining / double-strand break repair / manganese ion binding / site of double-strand break / double-stranded DNA binding / endonuclease activity / molecular adaptor activity / 加水分解酵素; エステル加水分解酵素 / chromosome, telomeric region / DNA repair / regulation of transcription by RNA polymerase II / ATP hydrolysis activity / mitochondrion / nucleoplasm / ATP binding / metal ion binding / nucleus 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: 3.2 Å | ||||||
![]() | Yu, Y. / Patel, D.J. | ||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Structure guided functional analysis of the S. cerevisiae Mre11 complex. 著者: John Petrini / Marcel Hohl / You Yu / Vitaly Kuryavyi / Dinshaw Patel 要旨: The Mre11 complex comprises Mre11, Rad50 and Nbs1 (Xrs2 in ). The core components, Mre11 and Rad50 are highly conserved, with readily identifiable orthologs in all clades of life, whereas Nbs1/Xrs2 ...The Mre11 complex comprises Mre11, Rad50 and Nbs1 (Xrs2 in ). The core components, Mre11 and Rad50 are highly conserved, with readily identifiable orthologs in all clades of life, whereas Nbs1/Xrs2 are present only in eukaryotes. In eukaryotes, the complex is integral to the DNA damage response, acting in DNA double strand break (DSB) detection and repair, and the activation of DNA damage signaling. We present here a 3.2 Å cryo-EM structure of the Mre11-Rad50 complex with bound dsDNA. The structure provided a foundation for detailed mutational analyses regarding homo and heterotypic protein interfaces, as well as DNA binding properties of Rad50. We define several conserved residues in Rad50 and Mre11 that are critical to complex assembly as well as for DNA binding. In addition, the data reveal that the Rad50 coiled coil domain influences ATP hydrolysis over long distances. | ||||||
履歴 |
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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 | ![]() | 401.7 KB | 表示 | ![]() |
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PDB形式 | ![]() | 293.6 KB | 表示 | ![]() |
PDBx/mmJSON形式 | ![]() | ツリー表示 | ![]() | |
その他 | ![]() |
-検証レポート
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
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-関連構造データ
関連構造データ | ![]() 44558MC 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
-タンパク質 , 2種, 4分子 CDBA
#1: タンパク質 | 分子量: 152797.688 Da / 分子数: 2 / 由来タイプ: 組換発現 由来: (組換発現) ![]() ![]() 遺伝子: RAD50, YNL250W, N0872 / 発現宿主: ![]() ![]() 参照: UniProt: P12753, 加水分解酵素; 酸無水物に作用 #2: タンパク質 | 分子量: 79607.297 Da / 分子数: 2 / 由来タイプ: 組換発現 由来: (組換発現) ![]() ![]() 遺伝子: MRE11, YMR224C, YM9959.06C / 発現宿主: ![]() ![]() |
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-DNA鎖 , 2種, 2分子 EF
#3: DNA鎖 | 分子量: 25951.223 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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#4: DNA鎖 | 分子量: 25203.014 Da / 分子数: 1 / 由来タイプ: 合成 / 由来: (合成) synthetic construct (人工物) |
-非ポリマー , 3種, 8分子 




#5: 化合物 | #6: 化合物 | #7: 化合物 | ChemComp-MN / |
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-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: dsDNA bound yeast Mre11-Rad50 complex / タイプ: COMPLEX / Entity ID: #1-#4 / 由来: RECOMBINANT |
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分子量 | 値: 0.46 MDa / 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 詳細: 50 mM Hepes, pH 7.5, 200 mM NaCl, 2 mM DTT, 2% Glycerol, 0.025% (w/v) CHAPSO (3-([3-Cholamidopropyl]dimethylammonio)-2-hydroxy-1-propanesulfonate) |
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: FEI TITAN 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): 2500 nm / 最小 デフォーカス(公称値): 1000 nm |
撮影 | 電子線照射量: 51.22 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: 3.2 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 242558 / 対称性のタイプ: POINT |