+データを開く
-基本情報
登録情報 | データベース: PDB / ID: 8bzo | ||||||
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タイトル | Cryo-EM structure of CDK2-CyclinA in complex with p27 from the SCFSKP2 E3 ligase Complex | ||||||
要素 |
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キーワード | CELL CYCLE / cyclin-dependent kinase / signalling / ubiquitination | ||||||
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 / cellular response to leptin stimulus / 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 / 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 / cellular response to leptin stimulus / 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 / male pronucleus / female pronucleus / cellular response to cocaine / response to glucagon / cyclin-dependent protein serine/threonine kinase regulator activity / positive regulation of DNA biosynthetic process / cellular response to insulin-like growth factor stimulus / cyclin A1-CDK2 complex / cyclin E2-CDK2 complex / cyclin E1-CDK2 complex / cochlea development / cyclin A2-CDK2 complex / positive regulation of DNA-templated DNA replication initiation / G2 Phase / cyclin-dependent protein kinase activity / 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 / cellular response to platelet-derived growth factor stimulus / regulation of DNA replication / Defective binding of RB1 mutants to E2F1,(E2F2, E2F3) / centriole replication / Regulation of APC/C activators between G1/S and early anaphase / telomere maintenance in response to DNA damage / centrosome duplication / G0 and Early G1 / Telomere Extension By Telomerase / negative regulation of mitotic cell cycle / cellular response to nitric oxide / Activation of the pre-replicative complex / animal organ regeneration / 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 / Activation of ATR in response to replication stress / Cyclin E associated events during G1/S transition / Cajal body / Cyclin A/B1/B2 associated events during G2/M transition / cyclin-dependent protein kinase holoenzyme complex / mitotic G1 DNA damage checkpoint signaling / Cyclin A:Cdk2-associated events at S phase entry / condensed chromosome / regulation of G2/M transition of mitotic cell cycle / regulation of mitotic cell cycle / post-translational protein modification / cyclin binding / positive regulation of DNA replication / male germ cell nucleus / meiotic cell cycle / cellular response to estradiol stimulus / Cdc20:Phospho-APC/C mediated degradation of Cyclin A / potassium ion transport / DNA Damage/Telomere Stress Induced Senescence / CDK-mediated phosphorylation and removal of Cdc6 / Meiotic recombination / SCF(Skp2)-mediated degradation of p27/p21 / Orc1 removal from chromatin / Transcriptional regulation of granulopoiesis / G1/S transition of mitotic cell cycle / Cyclin D associated events in G1 / G2/M transition of mitotic cell cycle / cellular senescence / positive regulation of fibroblast proliferation / Regulation of TP53 Degradation / nuclear envelope / protein-folding chaperone binding / Factors involved in megakaryocyte development and platelet production / Processing of DNA double-strand break ends / cellular response to hypoxia / Senescence-Associated Secretory Phenotype (SASP) / peptidyl-serine phosphorylation / regulation of gene expression / Regulation of TP53 Activity through Phosphorylation / transcription regulator complex / Ras protein signal transduction / DNA replication / chromosome, telomeric region / Ub-specific processing proteases / endosome / chromatin remodeling / protein phosphorylation / protein domain specific binding / negative regulation of cell population proliferation / cell division / protein serine kinase activity / DNA repair / protein serine/threonine kinase 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: 3.5 Å | ||||||
データ登録者 | Rowland, R.J. / Salamina, M. / Endicott, J.A. / Noble, M.E. | ||||||
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
構造ビューア | 分子: MolmilJmol/JSmol |
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-ダウンロードとリンク
-ダウンロード
PDBx/mmCIF形式 | 8bzo.cif.gz | 121.2 KB | 表示 | PDBx/mmCIF形式 |
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PDB形式 | pdb8bzo.ent.gz | 92.1 KB | 表示 | PDB形式 |
PDBx/mmJSON形式 | 8bzo.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 | 8bzo_validation.pdf.gz | 1.3 MB | 表示 | wwPDB検証レポート |
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文書・詳細版 | 8bzo_full_validation.pdf.gz | 1.4 MB | 表示 | |
XML形式データ | 8bzo_validation.xml.gz | 36 KB | 表示 | |
CIF形式データ | 8bzo_validation.cif.gz | 51.4 KB | 表示 | |
アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/bz/8bzo ftp://data.pdbj.org/pub/pdb/validation_reports/bz/8bzo | HTTPS FTP |
-関連構造データ
関連構造データ | 16344MC 8byaC 8bylC C: 同じ文献を引用 (文献) M: このデータのモデリングに利用したマップデータ |
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類似構造データ | 類似検索 - 機能・相同性F&H 検索 |
-リンク
-集合体
登録構造単位 |
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1 |
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-要素
#1: タンパク質 | 分子量: 33943.312 Da / 分子数: 1 / 由来タイプ: 組換発現 / 詳細: Thr160 phosphorylated CDK2 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: CDK2, CDKN2 / 発現宿主: Escherichia coli BL21(DE3) (大腸菌) / Variant (発現宿主): pLYSs / 参照: UniProt: P24941, cyclin-dependent kinase |
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#2: タンパク質 | 分子量: 48609.574 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: CCNA2, CCN1, CCNA / 発現宿主: Escherichia coli BL21(DE3) (大腸菌) / Variant (発現宿主): pLYSs / 参照: UniProt: P20248 |
#3: タンパク質 | 分子量: 17678.531 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: p27 kip1 / 発現宿主: Escherichia coli BL21(DE3) (大腸菌) / Variant (発現宿主): pLYSs / 参照: UniProt: O43806 |
研究の焦点であるリガンドがあるか | 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 |
-試料調製
構成要素 | 名称: Complex of CDK2-CyclinA-p27(kip1)from the SCFSKP2 E3 ligase complex タイプ: COMPLEX / Entity ID: all / 由来: RECOMBINANT |
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分子量 | 値: 0.074 MDa / 実験値: NO |
由来(天然) | 生物種: Homo sapiens (ヒト) |
由来(組換発現) | 生物種: Escherichia coli (大腸菌) / 株: BL21(DE3)pLYSs |
緩衝液 | pH: 7.8 |
試料 | 濃度: 0.2 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES |
試料支持 | グリッドの材料: COPPER / グリッドのサイズ: 400 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: 95 % / 凍結前の試料温度: 278.15 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): 130000 X / 最大 デフォーカス(公称値): 3000 nm / 最小 デフォーカス(公称値): 1000 nm / Cs: 2.7 mm / C2レンズ絞り径: 70 µm |
試料ホルダ | 凍結剤: NITROGEN |
撮影 | 平均露光時間: 9 sec. / 電子線照射量: 65 e/Å2 フィルム・検出器のモデル: GATAN K2 SUMMIT (4k x 4k) |
-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: 1110356 | ||||||||||||||||||||||||||||||||||||||||
対称性 | 点対称性: C1 (非対称) | ||||||||||||||||||||||||||||||||||||||||
3次元再構成 | 解像度: 3.5 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 136325 / 対称性のタイプ: POINT | ||||||||||||||||||||||||||||||||||||||||
原子モデル構築 | B value: 121 / プロトコル: RIGID BODY FIT / 空間: REAL 詳細: Initial fitting was performed in chimera followed by real space refinement in Phenix | ||||||||||||||||||||||||||||||||||||||||
拘束条件 |
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