+データを開く
-基本情報
登録情報 | データベース: PDB / ID: 7nj0 | |||||||||
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タイトル | CryoEM structure of the human Separase-Cdk1-cyclin B1-Cks1 complex | |||||||||
要素 |
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キーワード | HYDROLASE / autoinhibition phosphate-binding pocket pseudosubstrate Scc1 | |||||||||
機能・相同性 | 機能・相同性情報 negative regulation of sister chromatid cohesion / separase / regulation of Schwann cell differentiation / cyclin A1-CDK1 complex / regulation of attachment of mitotic spindle microtubules to kinetochore / pronuclear fusion / cyclin B1-CDK1 complex / positive regulation of mitochondrial ATP synthesis coupled electron transport / Mitotic Prophase / positive regulation of mitotic sister chromatid segregation ...negative regulation of sister chromatid cohesion / separase / regulation of Schwann cell differentiation / cyclin A1-CDK1 complex / regulation of attachment of mitotic spindle microtubules to kinetochore / pronuclear fusion / cyclin B1-CDK1 complex / positive regulation of mitochondrial ATP synthesis coupled electron transport / Mitotic Prophase / positive regulation of mitotic sister chromatid segregation / meiotic chromosome separation / histone kinase activity / Golgi disassembly / microtubule cytoskeleton organization involved in mitosis / ventricular cardiac muscle cell development / G2/M DNA replication checkpoint / Depolymerization of the Nuclear Lamina / E2F-enabled inhibition of pre-replication complex formation / MASTL Facilitates Mitotic Progression / mitotic sister chromatid separation / positive regulation of attachment of spindle microtubules to kinetochore / regulation of mitotic cell cycle spindle assembly checkpoint / establishment of mitotic spindle localization / Activation of NIMA Kinases NEK9, NEK6, NEK7 / homologous chromosome segregation / mitotic nuclear membrane disassembly / Phosphorylation of proteins involved in the G2/M transition by Cyclin A:Cdc2 complexes / Phosphorylation of Emi1 / cyclin A2-CDK1 complex / patched binding / meiotic spindle organization / Transcriptional regulation by RUNX2 / Nuclear Pore Complex (NPC) Disassembly / Phosphorylation of the APC/C / mitotic cell cycle phase transition / outer kinetochore / positive regulation of mitotic metaphase/anaphase transition / Transcription of E2F targets under negative control by p107 (RBL1) and p130 (RBL2) in complex with HDAC1 / Initiation of Nuclear Envelope (NE) Reformation / protein localization to kinetochore / Polo-like kinase mediated events / cyclin-dependent protein serine/threonine kinase activator activity / Golgi Cisternae Pericentriolar Stack Reorganization / Condensation of Prometaphase Chromosomes / centrosome cycle / response to copper ion / [RNA-polymerase]-subunit kinase / chromosome condensation / cyclin-dependent protein serine/threonine kinase regulator activity / SCF ubiquitin ligase complex / mitotic metaphase chromosome alignment / cysteine-type endopeptidase inhibitor activity / cyclin-dependent protein kinase activity / G1/S-Specific Transcription / MAPK3 (ERK1) activation / response to amine / ubiquitin-like protein ligase binding / mitotic G2 DNA damage checkpoint signaling / Regulation of APC/C activators between G1/S and early anaphase / mitotic sister chromatid segregation / cellular response to organic cyclic compound / regulation of embryonic development / mitotic cytokinesis / protein deubiquitination / catalytic activity / response to axon injury / chromosome organization / animal organ regeneration / cyclin-dependent kinase / cyclin-dependent protein serine/threonine kinase activity / Chk1/Chk2(Cds1) mediated inactivation of Cyclin B:Cdk1 complex / Regulation of MITF-M-dependent genes involved in cell cycle and proliferation / response to cadmium ion / Nuclear events stimulated by ALK signaling in cancer / Cyclin A/B1/B2 associated events during G2/M transition / cyclin-dependent protein kinase holoenzyme complex / positive regulation of cardiac muscle cell proliferation / Loss of Nlp from mitotic centrosomes / Loss of proteins required for interphase microtubule organization from the centrosome / Recruitment of mitotic centrosome proteins and complexes / epithelial cell differentiation / cysteine-type peptidase activity / Recruitment of NuMA to mitotic centrosomes / Anchoring of the basal body to the plasma membrane / regulation of mitotic cell cycle / positive regulation of G2/M transition of mitotic cell cycle / Resolution of Sister Chromatid Cohesion / APC/C:Cdc20 mediated degradation of Cyclin B / Hsp70 protein binding / ERK1 and ERK2 cascade / AURKA Activation by TPX2 / cyclin binding / positive regulation of mitotic cell cycle / RNA polymerase II CTD heptapeptide repeat kinase activity / mitotic spindle organization / TP53 Regulates Transcription of Genes Involved in G2 Cell Cycle Arrest / Condensation of Prophase Chromosomes / positive regulation of DNA replication / ubiquitin binding / molecular function activator activity 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: 3.6 Å | |||||||||
データ登録者 | Yu, J. / Raia, P. / Ghent, C.M. / Raisch, T. / Sadian, Y. / Barford, D. / Raunser, S. / Morgan, D.O. / Boland, A. | |||||||||
資金援助 | スイス, 米国, 2件
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引用 | ジャーナル: Nature / 年: 2021 タイトル: Structural basis of human separase regulation by securin and CDK1-cyclin B1. 著者: Jun Yu / Pierre Raia / Chloe M Ghent / Tobias Raisch / Yashar Sadian / Simone Cavadini / Pramod M Sabale / David Barford / Stefan Raunser / David O Morgan / Andreas Boland / 要旨: In early mitosis, the duplicated chromosomes are held together by the ring-shaped cohesin complex. Separation of chromosomes during anaphase is triggered by separase-a large cysteine endopeptidase ...In early mitosis, the duplicated chromosomes are held together by the ring-shaped cohesin complex. Separation of chromosomes during anaphase is triggered by separase-a large cysteine endopeptidase that cleaves the cohesin subunit SCC1 (also known as RAD21). Separase is activated by degradation of its inhibitors, securin and cyclin B, but the molecular mechanisms of separase regulation are not clear. Here we used cryogenic electron microscopy to determine the structures of human separase in complex with either securin or CDK1-cyclin B1-CKS1. In both complexes, separase is inhibited by pseudosubstrate motifs that block substrate binding at the catalytic site and at nearby docking sites. As in Caenorhabditis elegans and yeast, human securin contains its own pseudosubstrate motifs. By contrast, CDK1-cyclin B1 inhibits separase by deploying pseudosubstrate motifs from intrinsically disordered loops in separase itself. One autoinhibitory loop is oriented by CDK1-cyclin B1 to block the catalytic sites of both separase and CDK1. Another autoinhibitory loop blocks substrate docking in a cleft adjacent to the separase catalytic site. A third separase loop contains a phosphoserine that promotes complex assembly by binding to a conserved phosphate-binding pocket in cyclin B1. Our study reveals the diverse array of mechanisms by which securin and CDK1-cyclin B1 bind and inhibit separase, providing the molecular basis for the robust control of chromosome segregation. | |||||||||
履歴 |
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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: MolmilJmol/JSmol |
-ダウンロードとリンク
-ダウンロード
PDBx/mmCIF形式 | 7nj0.cif.gz | 352.8 KB | 表示 | PDBx/mmCIF形式 |
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PDB形式 | pdb7nj0.ent.gz | 272.4 KB | 表示 | PDB形式 |
PDBx/mmJSON形式 | 7nj0.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
文書・要旨 | 7nj0_validation.pdf.gz | 726.6 KB | 表示 | wwPDB検証レポート |
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文書・詳細版 | 7nj0_full_validation.pdf.gz | 741.6 KB | 表示 | |
XML形式データ | 7nj0_validation.xml.gz | 52.3 KB | 表示 | |
CIF形式データ | 7nj0_validation.cif.gz | 78.4 KB | 表示 | |
アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/nj/7nj0 ftp://data.pdbj.org/pub/pdb/validation_reports/nj/7nj0 | HTTPS FTP |
-関連構造データ
-リンク
-集合体
登録構造単位 |
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-要素
#1: タンパク質 | 分子量: 244677.328 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: PTTG1, EAP1, PTTG, TUTR1, ESPL1, ESP1, KIAA0165 発現宿主: Spodoptera frugiperda (ツマジロクサヨトウ) 参照: UniProt: O95997, UniProt: Q14674, separase |
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#2: タンパク質 | 分子量: 36667.098 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: CDK1, CDC2, CDC28A, CDKN1, P34CDC2 発現宿主: Spodoptera frugiperda (ツマジロクサヨトウ) 参照: UniProt: P06493, cyclin-dependent kinase, [RNA-polymerase]-subunit kinase |
#3: タンパク質 | 分子量: 52625.723 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: CCNB1, CCNB 発現宿主: Spodoptera frugiperda (ツマジロクサヨトウ) 参照: UniProt: P14635 |
#4: タンパク質 | 分子量: 9679.211 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: CKS1B, CKS1, PNAS-143, PNAS-16 発現宿主: Spodoptera frugiperda (ツマジロクサヨトウ) 参照: UniProt: P61024 |
#5: 化合物 | ChemComp-PO4 / |
研究の焦点であるリガンドがあるか | Y |
-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 |
-試料調製
構成要素 | 名称: Mutual inhibitory complex of human separase-Cdk1-cyclin B1-Cks1 (CCC) 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: Homo sapiens (ヒト) |
由来(組換発現) | 生物種: Spodoptera frugiperda (ツマジロクサヨトウ) |
緩衝液 | pH: 7.8 |
試料 | 濃度: 0.05 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES 詳細: The sample was monodisperse. We use graphene oxide-coated EM grids. |
試料支持 | グリッドの材料: GOLD / グリッドのタイプ: Quantifoil R1.2/1.3 |
急速凍結 | 装置: LEICA EM GP / 凍結剤: ETHANE / 湿度: 90 % / 凍結前の試料温度: 293 K |
-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 / 倍率(公称値): 105000 X / 最大 デフォーカス(公称値): 2500 nm / 最小 デフォーカス(公称値): 1300 nm / Calibrated defocus min: 1300 nm / 最大 デフォーカス(補正後): 2500 nm / C2レンズ絞り径: 50 µm / アライメント法: COMA FREE |
試料ホルダ | 凍結剤: NITROGEN 試料ホルダーモデル: FEI TITAN KRIOS AUTOGRID HOLDER |
撮影 | 平均露光時間: 3 sec. / 電子線照射量: 78 e/Å2 フィルム・検出器のモデル: GATAN K3 BIOQUANTUM (6k x 4k) 撮影したグリッド数: 5 / 実像数: 13640 |
-解析
ソフトウェア | 名称: PHENIX / バージョン: 1.18rc5_3822: / 分類: 精密化 | |||||||||||||||||||||||||||
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EMソフトウェア |
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CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | |||||||||||||||||||||||||||
対称性 | 点対称性: C1 (非対称) | |||||||||||||||||||||||||||
3次元再構成 | 解像度: 3.6 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 312836 / 対称性のタイプ: POINT | |||||||||||||||||||||||||||
原子モデル構築 | プロトコル: AB INITIO MODEL | |||||||||||||||||||||||||||
原子モデル構築 |
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拘束条件 |
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