+データを開く
-基本情報
登録情報 | データベース: EMDB / ID: EMD-16344 | |||||||||
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タイトル | Cryo-EM structure of CDK2-CyclinA in complex with p27 from the SCFSKP2 E3 ligase Complex | |||||||||
マップデータ | full map | |||||||||
試料 |
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キーワード | cell cycle (細胞周期) / cyclin-dependent kinase (サイクリン依存性キナーゼ) / signalling / ubiquitination (ユビキチン) | |||||||||
機能・相同性 | 機能・相同性情報 Phosphorylation of proteins involved in the G2/M transition by Cyclin A:Cdc2 complexes / cyclin A2-CDK1 complex / cell cycle G1/S phase transition / cellular response to luteinizing hormone stimulus / mitotic cell cycle phase transition / Transcription of E2F targets under negative control by p107 (RBL1) and p130 (RBL2) in complex with HDAC1 / cyclin-dependent protein serine/threonine kinase inhibitor activity / cellular response to leptin stimulus / male pronucleus / female pronucleus ...Phosphorylation of proteins involved in the G2/M transition by Cyclin A:Cdc2 complexes / cyclin A2-CDK1 complex / cell cycle G1/S phase transition / cellular response to luteinizing hormone stimulus / mitotic cell cycle phase transition / Transcription of E2F targets under negative control by p107 (RBL1) and p130 (RBL2) in complex with HDAC1 / cyclin-dependent protein serine/threonine kinase inhibitor activity / cellular response to leptin stimulus / male pronucleus / female pronucleus / cellular response to cocaine / response to glucagon / cyclin-dependent protein serine/threonine kinase regulator activity / cellular response to insulin-like growth factor stimulus / positive regulation of DNA biosynthetic process / cochlea development / cyclin A1-CDK2 complex / cyclin E2-CDK2 complex / cyclin E1-CDK2 complex / cellular response to platelet-derived growth factor stimulus / cyclin A2-CDK2 complex / positive regulation of DNA-templated DNA replication initiation / G2期 / cyclin-dependent protein kinase activity / Y染色体 / 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染色体 / PTK6 Regulates Cell Cycle / regulation of anaphase-promoting complex-dependent catabolic process / Defective binding of RB1 mutants to E2F1,(E2F2, E2F3) / regulation of DNA replication / centriole replication / Regulation of APC/C activators between G1/S and early anaphase / centrosome duplication / Telomere Extension By Telomerase / G0 and Early G1 / Activation of the pre-replicative complex / cyclin-dependent protein kinase holoenzyme complex / cellular response to nitric oxide / サイクリン依存性キナーゼ / animal organ regeneration / cyclin-dependent protein serine/threonine kinase activity / TP53 Regulates Transcription of Genes Involved in G1 Cell Cycle Arrest / カハール体 / 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 / condensed chromosome / mitotic G1 DNA damage checkpoint signaling / regulation of mitotic cell cycle / regulation of G2/M transition of mitotic cell cycle / cyclin binding / post-translational protein modification / meiotic cell cycle / positive regulation of DNA replication / response to organic substance / male germ cell nucleus / cellular response to estradiol stimulus / Cdc20:Phospho-APC/C mediated degradation of Cyclin A / G1/S transition of mitotic cell cycle / potassium ion transport / DNA Damage/Telomere Stress Induced Senescence / CDK-mediated phosphorylation and removal of Cdc6 / SCF(Skp2)-mediated degradation of p27/p21 / 遺伝的組換え / Orc1 removal from chromatin / Transcriptional regulation of granulopoiesis / Cyclin D associated events in G1 / G2/M transition of mitotic cell cycle / positive regulation of fibroblast proliferation / 細胞老化 / Regulation of TP53 Degradation / 核膜 / Factors involved in megakaryocyte development and platelet production / Processing of DNA double-strand break ends / cellular response to hypoxia / Senescence-Associated Secretory Phenotype (SASP) / 遺伝子発現の調節 / peptidyl-serine phosphorylation / Ras protein signal transduction / Regulation of TP53 Activity through Phosphorylation / transcription regulator complex / DNA複製 / chromosome, telomeric region / regulation of cell cycle / Ub-specific processing proteases / エンドソーム / クロマチンリモデリング / protein domain specific binding / 細胞分裂 / protein phosphorylation / protein serine kinase activity / DNA修復 / protein serine/threonine kinase activity / 中心体 / DNA-templated transcription / positive regulation of cell population proliferation 類似検索 - 分子機能 | |||||||||
生物種 | Homo sapiens (ヒト) | |||||||||
手法 | 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度: 3.5 Å | |||||||||
データ登録者 | Rowland RJ / Salamina M / Endicott JA / Noble ME | |||||||||
資金援助 | 英国, 1件
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引用 | ジャーナル: Sci Rep / 年: 2023 タイトル: Cryo-EM structure of SKP1-SKP2-CKS1 in complex with CDK2-cyclin A-p27KIP1. 著者: Rhianna J Rowland / Richard Heath / Daniel Maskell / Rebecca F Thompson / Neil A Ranson / James N Blaza / Jane A Endicott / Martin E M Noble / Marco Salamina / 要旨: p27KIP1 (cyclin-dependent kinase inhibitor 1B, p27) is a member of the CIP/KIP family of CDK (cyclin dependent kinase) regulators that inhibit cell cycle CDKs. p27 phosphorylation by CDK1/2, signals ...p27KIP1 (cyclin-dependent kinase inhibitor 1B, p27) is a member of the CIP/KIP family of CDK (cyclin dependent kinase) regulators that inhibit cell cycle CDKs. p27 phosphorylation by CDK1/2, signals its recruitment to the SCF (S-phase kinase associated protein 1 (SKP1)-cullin-SKP2) E3 ubiquitin ligase complex for proteasomal degradation. The nature of p27 binding to SKP2 and CKS1 was revealed by the SKP1-SKP2-CKS1-p27 phosphopeptide crystal structure. Subsequently, a model for the hexameric CDK2-cyclin A-CKS1-p27-SKP1-SKP2 complex was proposed by overlaying an independently determined CDK2-cyclin A-p27 structure. Here we describe the experimentally determined structure of the isolated CDK2-cyclin A-CKS1-p27-SKP1-SKP2 complex at 3.4 Å global resolution using cryogenic electron microscopy. This structure supports previous analysis in which p27 was found to be structurally dynamic, transitioning from disordered to nascent secondary structure on target binding. We employed 3D variability analysis to further explore the conformational space of the hexameric complex and uncovered a previously unidentified hinge motion centred on CKS1. This flexibility gives rise to open and closed conformations of the hexameric complex that we propose may contribute to p27 regulation by facilitating recognition with SCF. This 3D variability analysis further informed particle subtraction and local refinement approaches to enhance the local resolution of the complex. | |||||||||
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 | emd_16344.map.gz | 97.2 MB | EMDBマップデータ形式 | |
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ヘッダ (付随情報) | emd-16344-v30.xml emd-16344.xml | 20.3 KB 20.3 KB | 表示 表示 | EMDBヘッダ |
FSC (解像度算出) | emd_16344_fsc.xml | 9.9 KB | 表示 | FSCデータファイル |
画像 | emd_16344.png | 124.9 KB | ||
マスクデータ | emd_16344_msk_1.map | 103 MB | マスクマップ | |
その他 | emd_16344_half_map_1.map.gz emd_16344_half_map_2.map.gz | 95.5 MB 95.5 MB | ||
アーカイブディレクトリ | http://ftp.pdbj.org/pub/emdb/structures/EMD-16344 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-16344 | HTTPS FTP |
-関連構造データ
-リンク
EMDBのページ | EMDB (EBI/PDBe) / EMDataResource |
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「今月の分子」の関連する項目 |
-マップ
ファイル | ダウンロード / ファイル: emd_16344.map.gz / 形式: CCP4 / 大きさ: 103 MB / タイプ: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||
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注釈 | full map | ||||||||||||||||||||
ボクセルのサイズ | X=Y=Z: 1.07 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
-マスク #1
ファイル | emd_16344_msk_1.map | ||||||||||||
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投影像・断面図 |
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密度ヒストグラム |
-ハーフマップ: half map A
ファイル | emd_16344_half_map_1.map | ||||||||||||
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注釈 | half map A | ||||||||||||
投影像・断面図 |
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密度ヒストグラム |
-ハーフマップ: half map B
ファイル | emd_16344_half_map_2.map | ||||||||||||
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注釈 | half map B | ||||||||||||
投影像・断面図 |
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密度ヒストグラム |
-試料の構成要素
-全体 : Complex of CDK2-CyclinA-p27(kip1)from the SCFSKP2 E3 ligase complex
全体 | 名称: Complex of CDK2-CyclinA-p27(kip1)from the SCFSKP2 E3 ligase complex |
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要素 |
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-超分子 #1: Complex of CDK2-CyclinA-p27(kip1)from the SCFSKP2 E3 ligase complex
超分子 | 名称: Complex of CDK2-CyclinA-p27(kip1)from the SCFSKP2 E3 ligase complex タイプ: complex / ID: 1 / 親要素: 0 / 含まれる分子: all |
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由来(天然) | 生物種: Homo sapiens (ヒト) |
分子量 | 理論値: 74 KDa |
-分子 #1: Cyclin-dependent kinase 2
分子 | 名称: Cyclin-dependent kinase 2 / タイプ: protein_or_peptide / ID: 1 / 詳細: Thr160 phosphorylated CDK2 / コピー数: 1 / 光学異性体: LEVO / EC番号: サイクリン依存性キナーゼ |
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由来(天然) | 生物種: Homo sapiens (ヒト) |
分子量 | 理論値: 33.943312 KDa |
組換発現 | 生物種: Escherichia coli BL21(DE3) (大腸菌) |
配列 | 文字列: MENFQKVEKI GEGTYGVVYK ARNKLTGEVV ALKKIRLDTE TEGVPSTAIR EISLLKELNH PNIVKLLDVI HTENKLYLVF EFLHQDLKK FMDASALTGI PLPLIKSYLF QLLQGLAFCH SHRVLHRDLK PQNLLINTEG AIKLADFGLA RAFGVPVRTY (TPO) ...文字列: MENFQKVEKI GEGTYGVVYK ARNKLTGEVV ALKKIRLDTE TEGVPSTAIR EISLLKELNH PNIVKLLDVI HTENKLYLVF EFLHQDLKK FMDASALTGI PLPLIKSYLF QLLQGLAFCH SHRVLHRDLK PQNLLINTEG AIKLADFGLA RAFGVPVRTY (TPO)HEVVTLWY RAPEILLGCK YYSTAVDIWS LGCIFAEMVT RRALFPGDSE IDQLFRIFRT LGTPDEVVWP GVTSMPD YK PSFPKWARQD FSKVVPPLDE DGRSLLSQML HYDPNKRISA KAALAHPFFQ DVTKPVPHLR UniProtKB: サイクリン依存性キナーゼ2 |
-分子 #2: Cyclin-A2
分子 | 名称: Cyclin-A2 / タイプ: protein_or_peptide / ID: 2 / コピー数: 1 / 光学異性体: LEVO |
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由来(天然) | 生物種: Homo sapiens (ヒト) |
分子量 | 理論値: 48.609574 KDa |
組換発現 | 生物種: Escherichia coli BL21(DE3) (大腸菌) |
配列 | 文字列: MLGNSAPGPA TREAGSALLA LQQTALQEDQ ENINPEKAAP VQQPRTRAAL AVLKSGNPRG LAQQQRPKTR RVAPLKDLPV NDEHVTVPP WKANSKQPAF TIHVDEAEKE AQKKPAESQK IEREDALAFN SAISLPGPRK PLVPLDYPMD GSFESPHTMD M SIILEDEK ...文字列: MLGNSAPGPA TREAGSALLA LQQTALQEDQ ENINPEKAAP VQQPRTRAAL AVLKSGNPRG LAQQQRPKTR RVAPLKDLPV NDEHVTVPP WKANSKQPAF TIHVDEAEKE AQKKPAESQK IEREDALAFN SAISLPGPRK PLVPLDYPMD GSFESPHTMD M SIILEDEK PVSVNEVPDY HEDIHTYLRE MEVKCKPKVG YMKKQPDITN SMRAILVDWL VEVGEEYKLQ NETLHLAVNY ID RFLSSMS VLRGKLQLVG TAAMLLASKF EEIYPPEVAE FVYITDDTYT KKQVLRMEHL VLKVLTFDLA APTVNQFLTQ YFL HQQPAN CKVESLAMFL GELSLIDADP YLKYLPSVIA GAAFHLALYT VTGQSWPESL IRKTGYTLES LKPCLMDLHQ TYLK APQHA QQSIREKYKN SKYHGVSLLN PPETLNL UniProtKB: Cyclin-A2 |
-分子 #3: Cyclin-dependent kinase inhibitor 1B
分子 | 名称: Cyclin-dependent kinase inhibitor 1B / タイプ: protein_or_peptide / ID: 3 / コピー数: 1 / 光学異性体: LEVO |
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由来(天然) | 生物種: Homo sapiens (ヒト) |
分子量 | 理論値: 17.678531 KDa |
組換発現 | 生物種: Escherichia coli BL21(DE3) (大腸菌) |
配列 | 文字列: MSNVRVSNGS PSLERMDARQ AEHPKPSACR NLFGPVDHEE LTRDLEKHCR DMEEASQRKW NFDFQNHKPL EGKYEWQEVE KGSLPEFYY RPPRPPKGAC KVPAQESQDG SGSRPAAPLI GAPANSEDTH LVDPKTDPSD SQTGLAEQCA GIRKRPATD UniProtKB: Cyclin-dependent kinase inhibitor 1B |
-実験情報
-構造解析
手法 | クライオ電子顕微鏡法 |
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解析 | 単粒子再構成法 |
試料の集合状態 | particle |
-試料調製
濃度 | 0.2 mg/mL |
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緩衝液 | pH: 7.8 |
グリッド | モデル: Quantifoil R1.2/1.3 / 材質: COPPER / メッシュ: 400 / 支持フィルム - 材質: CARBON / 支持フィルム - トポロジー: HOLEY / 前処理 - タイプ: GLOW DISCHARGE / 前処理 - 時間: 60 sec. / 前処理 - 雰囲気: OTHER |
凍結 | 凍結剤: ETHANE / チャンバー内湿度: 95 % / チャンバー内温度: 278.15 K / 装置: FEI VITROBOT MARK IV |
-電子顕微鏡法
顕微鏡 | FEI TITAN KRIOS |
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電子線 | 加速電圧: 300 kV / 電子線源: FIELD EMISSION GUN |
電子光学系 | C2レンズ絞り径: 70.0 µm / 照射モード: FLOOD BEAM / 撮影モード: BRIGHT FIELDBright-field microscopy / Cs: 2.7 mm / 最大 デフォーカス(公称値): 3.0 µm / 最小 デフォーカス(公称値): 1.0 µm / 倍率(公称値): 130000 |
試料ステージ | ホルダー冷却材: NITROGEN |
撮影 | フィルム・検出器のモデル: GATAN K2 SUMMIT (4k x 4k) 平均露光時間: 9.0 sec. / 平均電子線量: 65.0 e/Å2 |
実験機器 | モデル: Titan Krios / 画像提供: FEI Company |
-画像解析
-原子モデル構築 1
詳細 | Initial fitting was performed in chimera followed by real space refinement in Phenix |
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精密化 | 空間: REAL / プロトコル: RIGID BODY FIT / 温度因子: 121 |
得られたモデル | PDB-8bzo: |