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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: 6zh8 | ||||||
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| タイトル | Cryo-EM structure of DNA-PKcs:DNA | ||||||
要素 |
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キーワード | DNA BINDING PROTEIN / Kinase / DNA-PKcs / NHEJ / DNA-repair / DNA-PK | ||||||
| 機能・相同性 | 機能・相同性情報positive regulation of platelet formation / T cell receptor V(D)J recombination / pro-B cell differentiation / DNA-dependent protein kinase activity / small-subunit processome assembly / positive regulation of lymphocyte differentiation / histone H2AXS139 kinase activity / DNA-dependent protein kinase complex / DNA-dependent protein kinase-DNA ligase 4 complex / immunoglobulin V(D)J recombination ...positive regulation of platelet formation / T cell receptor V(D)J recombination / pro-B cell differentiation / DNA-dependent protein kinase activity / small-subunit processome assembly / positive regulation of lymphocyte differentiation / histone H2AXS139 kinase activity / DNA-dependent protein kinase complex / DNA-dependent protein kinase-DNA ligase 4 complex / immunoglobulin V(D)J recombination / nonhomologous end joining complex / immature B cell differentiation / regulation of smooth muscle cell proliferation / regulation of epithelial cell proliferation / double-strand break repair via alternative nonhomologous end joining / Cytosolic sensors of pathogen-associated DNA / telomere capping / IRF3-mediated induction of type I IFN / regulation of hematopoietic stem cell differentiation / U3 snoRNA binding / peptidyl-threonine phosphorylation / maturation of 5.8S rRNA / T cell lineage commitment / positive regulation of double-strand break repair via nonhomologous end joining / B cell lineage commitment / negative regulation of cGAS/STING signaling pathway / negative regulation of protein phosphorylation / ectopic germ cell programmed cell death / somitogenesis / mitotic G1 DNA damage checkpoint signaling / activation of innate immune response / positive regulation of erythrocyte differentiation / telomere maintenance / protein modification process / peptidyl-serine phosphorylation / positive regulation of translation / response to gamma radiation / Nonhomologous End-Joining (NHEJ) / small-subunit processome / regulation of circadian rhythm / protein-DNA complex / brain development / double-strand break repair via nonhomologous end joining / protein destabilization / intrinsic apoptotic signaling pathway in response to DNA damage / cellular response to insulin stimulus / T cell differentiation in thymus / rhythmic process / double-strand break repair / E3 ubiquitin ligases ubiquitinate target proteins / heart development / double-stranded DNA binding / transcription regulator complex / protein phosphorylation / RNA polymerase II-specific DNA-binding transcription factor binding / protein kinase activity / chromosome, telomeric region / non-specific serine/threonine protein kinase / positive regulation of apoptotic process / protein domain specific binding / innate immune response / protein serine kinase activity / protein serine/threonine kinase activity / DNA damage response / negative regulation of apoptotic process / chromatin / nucleolus / enzyme binding / positive regulation of transcription by RNA polymerase II / protein-containing complex / RNA binding / nucleoplasm / ATP binding / membrane / nucleus / cytosol 類似検索 - 分子機能 | ||||||
| 生物種 | Homo sapiens (ヒト) | ||||||
| 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: 4.14 Å | ||||||
データ登録者 | Chaplin, A.K. / Hardwick, S.W. / Chirgadze, D.Y. / Blundell, T.L. | ||||||
| 資金援助 | 英国, 1件
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引用 | ジャーナル: Nat Struct Mol Biol / 年: 2021タイトル: Dimers of DNA-PK create a stage for DNA double-strand break repair. 著者: Amanda K Chaplin / Steven W Hardwick / Shikang Liang / Antonia Kefala Stavridi / Ales Hnizda / Lee R Cooper / Taiana Maia De Oliveira / Dimitri Y Chirgadze / Tom L Blundell / ![]() 要旨: DNA double-strand breaks are the most dangerous type of DNA damage and, if not repaired correctly, can lead to cancer. In humans, Ku70/80 recognizes DNA broken ends and recruits the DNA-dependent ...DNA double-strand breaks are the most dangerous type of DNA damage and, if not repaired correctly, can lead to cancer. In humans, Ku70/80 recognizes DNA broken ends and recruits the DNA-dependent protein kinase catalytic subunit (DNA-PKcs) to form DNA-dependent protein kinase holoenzyme (DNA-PK) in the process of non-homologous end joining (NHEJ). We present a 2.8-Å-resolution cryo-EM structure of DNA-PKcs, allowing precise amino acid sequence registration in regions uninterpreted in previous 4.3-Å X-ray maps. We also report a cryo-EM structure of DNA-PK at 3.5-Å resolution and reveal a dimer mediated by the Ku80 C terminus. Central to dimer formation is a domain swap of the conserved C-terminal helix of Ku80. Our results suggest a new mechanism for NHEJ utilizing a DNA-PK dimer to bring broken DNA ends together. Furthermore, drug inhibition of NHEJ in combination with chemo- and radiotherapy has proved successful, making these models central to structure-based drug targeting efforts. #1: ジャーナル: Nat.Struct.Mol.Biol. / 年: 2020タイトル: Dimers of DNA-PK create a stage for DNA-double strand break repair 著者: Chaplin, A.K. / Hardwick, S.W. / Liang, S. / Stavridi, A.K. / Hnizda, A. / Cooper, L.R. / De Oliveira, T.M. / Chirgadze, D.Y. / Blundell, T.L. | ||||||
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構造の表示
| ムービー |
ムービービューア |
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| 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 | 6zh8.cif.gz | 664.9 KB | 表示 | PDBx/mmCIF形式 |
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| PDB形式 | pdb6zh8.ent.gz | 531.8 KB | 表示 | PDB形式 |
| PDBx/mmJSON形式 | 6zh8.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
| アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/zh/6zh8 ftp://data.pdbj.org/pub/pdb/validation_reports/zh/6zh8 | HTTPS FTP |
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-関連構造データ
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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: 472056.281 Da / 分子数: 1 / 由来タイプ: 天然 / 由来: (天然) Homo sapiens (ヒト) / 細胞株: HELA参照: UniProt: P78527, non-specific serine/threonine protein kinase |
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| #2: DNA鎖 | 分子量: 3369.217 Da / 分子数: 1 / 由来タイプ: 合成 / 由来: (合成) Homo sapiens (ヒト) |
| #3: DNA鎖 | 分子量: 2427.658 Da / 分子数: 1 / 由来タイプ: 合成 / 由来: (合成) Homo sapiens (ヒト) |
-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 |
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| 分子量 | 値: 0.48 MDa / 実験値: NO | ||||||||||||||||||||||||
| 由来(天然) |
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| 由来(組換発現) | 生物種: synthetic construct (人工物) | ||||||||||||||||||||||||
| 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 | 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: 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 |
| 撮影 | 電子線照射量: 52.97 e/Å2 / 検出モード: COUNTING フィルム・検出器のモデル: GATAN K2 SUMMIT (4k x 4k) |
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解析
| EMソフトウェア |
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| CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||
| 粒子像の選択 | 選択した粒子像数: 350668 | ||||||||||||
| 対称性 | 点対称性: C1 (非対称) | ||||||||||||
| 3次元再構成 | 解像度: 4.14 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 31881 / 対称性のタイプ: POINT |
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万見について




Homo sapiens (ヒト)
英国, 1件
引用
UCSF Chimera



















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