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基本情報
登録情報 | データベース: PDB / ID: 8roz | |||||||||
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タイトル | Cryo-EM structure of CDK2-cyclin A in complex with CDC25A | |||||||||
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![]() | CELL CYCLE / cell-cycle / CDK / phosphatase / cancer | |||||||||
機能・相同性 | ![]() positive regulation of G2/MI transition of meiotic cell cycle / cell cycle G1/S phase transition / Polo-like kinase mediated events / Transcription of E2F targets under negative control by DREAM complex / regulation of cyclin-dependent protein serine/threonine kinase activity / cyclin-dependent protein serine/threonine kinase regulator activity / Deregulated CDK5 triggers multiple neurodegenerative pathways in Alzheimer's disease models / cyclin A1-CDK2 complex / cyclin E2-CDK2 complex / cyclin E1-CDK2 complex ...positive regulation of G2/MI transition of meiotic cell cycle / cell cycle G1/S phase transition / Polo-like kinase mediated events / Transcription of E2F targets under negative control by DREAM complex / regulation of cyclin-dependent protein serine/threonine kinase activity / cyclin-dependent protein serine/threonine kinase regulator activity / Deregulated CDK5 triggers multiple neurodegenerative pathways in Alzheimer's disease models / cyclin A1-CDK2 complex / cyclin E2-CDK2 complex / cyclin E1-CDK2 complex / cyclin A2-CDK2 complex / positive regulation of DNA-templated DNA replication initiation / cyclin-dependent protein kinase activity / G2 Phase / Y chromosome / Phosphorylation of proteins involved in G1/S transition by active Cyclin E:Cdk2 complexes / positive regulation of heterochromatin formation / p53-Dependent G1 DNA Damage Response / X chromosome / PTK6 Regulates Cell Cycle / regulation of anaphase-promoting complex-dependent catabolic process / Defective binding of RB1 mutants to E2F1,(E2F2, E2F3) / microtubule organizing center / centriole replication / Regulation of APC/C activators between G1/S and early anaphase / telomere maintenance in response to DNA damage / regulation of DNA replication / centrosome duplication / phosphoprotein phosphatase activity / Telomere Extension By Telomerase / G0 and Early G1 / Activation of the pre-replicative complex / cyclin-dependent kinase / cyclin-dependent protein serine/threonine kinase activity / TP53 Regulates Transcription of Genes Involved in G1 Cell Cycle Arrest / Regulation of MITF-M-dependent genes involved in cell cycle and proliferation / Cajal body / Activation of ATR in response to replication stress / Cyclin E associated events during G1/S transition / Cyclin A/B1/B2 associated events during G2/M transition / Cyclin A:Cdk2-associated events at S phase entry / cyclin-dependent protein kinase holoenzyme complex / condensed chromosome / regulation of G2/M transition of mitotic cell cycle / mitotic G1 DNA damage checkpoint signaling / positive regulation of G2/M transition of mitotic cell cycle / protein tyrosine phosphatase activity / protein tyrosine phosphatase activity, metal-dependent / histone H2AXY142 phosphatase activity / protein-tyrosine-phosphatase / non-membrane spanning protein tyrosine phosphatase activity / cellular response to nitric oxide / post-translational protein modification / cyclin binding / regulation of mitotic cell cycle / male germ cell nucleus / positive regulation of DNA replication / meiotic cell cycle / Ubiquitin-Mediated Degradation of Phosphorylated Cdc25A / response to radiation / potassium ion transport / DNA Damage/Telomere Stress Induced Senescence / Meiotic recombination / CDK-mediated phosphorylation and removal of Cdc6 / SCF(Skp2)-mediated degradation of p27/p21 / G1/S transition of mitotic cell cycle / Transcriptional regulation of granulopoiesis / Orc1 removal from chromatin / G2/M transition of mitotic cell cycle / Cyclin D associated events in G1 / cellular senescence / Regulation of TP53 Degradation / nuclear envelope / peptidyl-serine phosphorylation / protein-folding chaperone binding / Factors involved in megakaryocyte development and platelet production / Processing of DNA double-strand break ends / regulation of gene expression / Senescence-Associated Secretory Phenotype (SASP) / Regulation of TP53 Activity through Phosphorylation / transcription regulator complex / Ras protein signal transduction / chromosome, telomeric region / cell population proliferation / DNA replication / endosome / Ub-specific processing proteases / protein phosphorylation / chromatin remodeling / protein domain specific binding / cell division / protein serine kinase activity / DNA repair / protein serine/threonine kinase activity / DNA-templated transcription / positive regulation of cell population proliferation / centrosome / protein kinase binding / positive regulation of DNA-templated transcription / negative regulation of transcription by RNA polymerase II 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: 2.7 Å | |||||||||
![]() | Rowland, R.J. / Noble, M.E.M. / Endicott, J.A. | |||||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Cryo-EM structure of the CDK2-cyclin A-CDC25A complex. 著者: Rhianna J Rowland / Svitlana Korolchuk / Marco Salamina / Natalie J Tatum / James R Ault / Sam Hart / Johan P Turkenburg / James N Blaza / Martin E M Noble / Jane A Endicott / ![]() 要旨: The cell division cycle 25 phosphatases CDC25A, B and C regulate cell cycle transitions by dephosphorylating residues in the conserved glycine-rich loop of CDKs to activate their activity. Here, we ...The cell division cycle 25 phosphatases CDC25A, B and C regulate cell cycle transitions by dephosphorylating residues in the conserved glycine-rich loop of CDKs to activate their activity. Here, we present the cryo-EM structure of CDK2-cyclin A in complex with CDC25A at 2.7 Å resolution, providing a detailed structural analysis of the overall complex architecture and key protein-protein interactions that underpin this 86 kDa complex. We further identify a CDC25A C-terminal helix that is critical for complex formation. Sequence conservation analysis suggests CDK1/2-cyclin A, CDK1-cyclin B and CDK2/3-cyclin E are suitable binding partners for CDC25A, whilst CDK4/6-cyclin D complexes appear unlikely substrates. A comparative structural analysis of CDK-containing complexes also confirms the functional importance of the conserved CDK1/2 GDSEID motif. This structure improves our understanding of the roles of CDC25 phosphatases in CDK regulation and may inform the development of CDC25-targeting anticancer strategies. | |||||||||
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 | ![]() | 162.1 KB | 表示 | ![]() |
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PDB形式 | ![]() | 125 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 | ![]() 19408MC 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
#1: タンパク質 | 分子量: 34136.449 Da / 分子数: 1 / 由来タイプ: 組換発現 詳細: Human cyclin dependant protein kinase 2 (CDK2) phosphorylated at Tyr15 and Thr160 由来: (組換発現) ![]() ![]() ![]() |
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#2: タンパク質 | 分子量: 30119.799 Da / 分子数: 1 / 由来タイプ: 組換発現 / 詳細: Bovine cyclin A2 / 由来: (組換発現) ![]() ![]() ![]() ![]() |
#3: タンパク質 | 分子量: 22533.123 Da / 分子数: 1 / 由来タイプ: 組換発現 詳細: M-phase inducer phosphatase 1 (CDC25A) catalytic domain 由来: (組換発現) ![]() ![]() ![]() |
研究の焦点であるリガンドがあるか | N |
Has protein modification | 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 |
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試料調製
構成要素 | 名称: Trimeric complex of CDK2-cyclin A-CDC25A / タイプ: COMPLEX / Entity ID: all / 由来: RECOMBINANT | ||||||||||||||||||||
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分子量 | 値: 0.086 MDa / 実験値: YES | ||||||||||||||||||||
由来(天然) | 生物種: ![]() | ||||||||||||||||||||
由来(組換発現) | 生物種: ![]() ![]() | ||||||||||||||||||||
緩衝液 | pH: 7.4 / 詳細: 50 mM HEPES, 200 mM NaCl, 1 mM DTT, pH 7.4 | ||||||||||||||||||||
緩衝液成分 |
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試料 | 濃度: 1.8 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES | ||||||||||||||||||||
試料支持 | 詳細: Grids were glow discharged for 1min at 20 mAmp/0.26 mBar グリッドの材料: COPPER / グリッドのサイズ: 200 divisions/in. / グリッドのタイプ: Quantifoil R1.2/1.3 | ||||||||||||||||||||
急速凍結 | 装置: FEI VITROBOT MARK IV / 凍結剤: ETHANE / 湿度: 80 % / 凍結前の試料温度: 277 K |
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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: TFS KRIOS |
電子銃 | 電子線源: ![]() |
電子レンズ | モード: BRIGHT FIELD / 倍率(公称値): 150000 X / 最大 デフォーカス(公称値): 2000 nm / 最小 デフォーカス(公称値): 600 nm / Cs: 2.7 mm / C2レンズ絞り径: 100 µm |
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: 1.92 sec. / 電子線照射量: 50 e/Å2 フィルム・検出器のモデル: GATAN K3 BIOQUANTUM (6k x 4k) |
電子光学装置 | エネルギーフィルター名称: GIF Bioquantum / エネルギーフィルタースリット幅: 20 eV |
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解析
EMソフトウェア |
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CTF補正 | 詳細: Patch CTF / タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||||||||||||||||||||||||||||
粒子像の選択 | 選択した粒子像数: 4981705 | ||||||||||||||||||||||||||||||||||||||||||||||||||
対称性 | 点対称性: C1 (非対称) | ||||||||||||||||||||||||||||||||||||||||||||||||||
3次元再構成 | 解像度: 2.7 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 670830 / クラス平均像の数: 1 / 対称性のタイプ: POINT | ||||||||||||||||||||||||||||||||||||||||||||||||||
原子モデル構築 | B value: 144 / プロトコル: AB INITIO MODEL / 空間: REAL 詳細: A model was generated using ModelAngelo. Initial local fitting was performed in ChimerX followed by real space refinement in Phenix and manual fitting in coot. | ||||||||||||||||||||||||||||||||||||||||||||||||||
原子モデル構築 | 詳細: ModelAngelo / Source name: Other / タイプ: in silico model |