+データを開く
-基本情報
登録情報 | データベース: PDB / ID: 8byl | ||||||
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タイトル | Cryo-EM structure of SKP1-SKP2-CKS1 from the SCFSKP2 E3 ligase complex | ||||||
要素 |
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キーワード | CELL CYCLE / cyclin-dependent kinase / signalling / ubiquitinationCell cycle | ||||||
機能・相同性 | 機能・相同性情報 cyclin-dependent protein kinase activating kinase regulator activity / regulation of lens fiber cell differentiation / negative regulation of cardiac muscle tissue regeneration / negative regulation of cyclin-dependent protein kinase activity / positive regulation of protein polyubiquitination / PTK6 Regulates Cell Cycle / autophagic cell death / FOXO-mediated transcription of cell cycle genes / F-box domain binding / negative regulation of epithelial cell proliferation involved in prostate gland development ...cyclin-dependent protein kinase activating kinase regulator activity / regulation of lens fiber cell differentiation / negative regulation of cardiac muscle tissue regeneration / negative regulation of cyclin-dependent protein kinase activity / positive regulation of protein polyubiquitination / PTK6 Regulates Cell Cycle / autophagic cell death / FOXO-mediated transcription of cell cycle genes / F-box domain binding / negative regulation of epithelial cell proliferation involved in prostate gland development / Defective binding of RB1 mutants to E2F1,(E2F2, E2F3) / PcG protein complex / Aberrant regulation of mitotic exit in cancer due to RB1 defects / p53-Dependent G1 DNA Damage Response / regulation of cell cycle G1/S phase transition / regulation of exit from mitosis / mitotic cell cycle phase transition / epithelial cell proliferation involved in prostate gland development / negative regulation of epithelial cell apoptotic process / negative regulation of cyclin-dependent protein serine/threonine kinase activity / negative regulation of phosphorylation / Cul7-RING ubiquitin ligase complex / positive regulation of ubiquitin protein ligase activity / ubiquitin ligase activator activity / Loss of Function of FBXW7 in Cancer and NOTCH1 Signaling / maintenance of protein location in nucleus / cyclin-dependent protein serine/threonine kinase inhibitor activity / negative regulation of vascular associated smooth muscle cell proliferation / RHO GTPases activate CIT / cyclin-dependent protein serine/threonine kinase activator activity / nuclear export / negative regulation of mitotic cell cycle / AKT phosphorylates targets in the cytosol / positive regulation of intracellular estrogen receptor signaling pathway / Cul4A-RING E3 ubiquitin ligase complex / epithelial cell apoptotic process / SCF ubiquitin ligase complex / cellular response to antibiotic / Cyclin E associated events during G1/S transition / Estrogen-dependent nuclear events downstream of ESR-membrane signaling / ubiquitin ligase complex scaffold activity / SCF-dependent proteasomal ubiquitin-dependent protein catabolic process / negative regulation of kinase activity / regulation of cyclin-dependent protein serine/threonine kinase activity / molecular function inhibitor activity / TP53 Regulates Transcription of Genes Involved in G1 Cell Cycle Arrest / cellular response to lithium ion / positive regulation of DNA replication / protein kinase inhibitor activity / Prolactin receptor signaling / Cyclin A:Cdk2-associated events at S phase entry / cyclin-dependent protein kinase holoenzyme complex / protein monoubiquitination / Constitutive Signaling by AKT1 E17K in Cancer / regulation of mitotic cell cycle / regulation of G1/S transition of mitotic cell cycle / cullin family protein binding / inner ear development / protein K63-linked ubiquitination / cellular response to organic cyclic compound / cyclin binding / positive regulation of double-strand break repair via homologous recombination / ubiquitin-like ligase-substrate adaptor activity / response to amino acid / protein K48-linked ubiquitination / Nuclear events stimulated by ALK signaling in cancer / response to glucose / response to cadmium ion / Notch signaling pathway / positive regulation of microtubule polymerization / Hsp70 protein binding / DNA damage response, signal transduction by p53 class mediator resulting in cell cycle arrest / FLT3 Signaling / regulation of cell migration / Regulation of BACH1 activity / MAP3K8 (TPL2)-dependent MAPK1/3 activation / potassium ion transport / DNA Damage/Telomere Stress Induced Senescence / ubiquitin binding / molecular function activator activity / SCF-beta-TrCP mediated degradation of Emi1 / NIK-->noncanonical NF-kB signaling / placenta development / Vpu mediated degradation of CD4 / Dectin-1 mediated noncanonical NF-kB signaling / SCF(Skp2)-mediated degradation of p27/p21 / sensory perception of sound / Degradation of GLI1 by the proteasome / Activation of NF-kappaB in B cells / Negative regulation of NOTCH4 signaling / Iron uptake and transport / GSK3B and BTRC:CUL1-mediated-degradation of NFE2L2 / Degradation of GLI2 by the proteasome / GLI3 is processed to GLI3R by the proteasome / Orc1 removal from chromatin / FBXL7 down-regulates AURKA during mitotic entry and in early mitosis / APC/C:Cdh1 mediated degradation of Cdc20 and other APC/C:Cdh1 targeted proteins in late mitosis/early G1 / Degradation of beta-catenin by the destruction complex / Cyclin D associated events in G1 / G1/S transition of mitotic cell cycle 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.M. | ||||||
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 | 8byl.cif.gz | 124.8 KB | 表示 | PDBx/mmCIF形式 |
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PDB形式 | pdb8byl.ent.gz | 93.8 KB | 表示 | PDB形式 |
PDBx/mmJSON形式 | 8byl.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 | 8byl_validation.pdf.gz | 1.3 MB | 表示 | wwPDB検証レポート |
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文書・詳細版 | 8byl_full_validation.pdf.gz | 1.3 MB | 表示 | |
XML形式データ | 8byl_validation.xml.gz | 34.5 KB | 表示 | |
CIF形式データ | 8byl_validation.cif.gz | 48.6 KB | 表示 | |
アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/by/8byl ftp://data.pdbj.org/pub/pdb/validation_reports/by/8byl | HTTPS FTP |
-関連構造データ
関連構造データ | 16327MC 8byaC 8bzoC 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: 18679.965 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: SKP1, EMC19, OCP2, SKP1A, TCEB1L / 発現宿主: Escherichia coli BL21(DE3) (大腸菌) / Variant (発現宿主): pLYSs / 参照: UniProt: P63208 |
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#2: タンパク質 | 分子量: 47817.785 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: SKP2, FBXL1 / 発現宿主: Escherichia coli BL21(DE3) (大腸菌) / Variant (発現宿主): pLYSs / 参照: UniProt: Q13309 |
#3: 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: Escherichia coli BL21(DE3) (大腸菌) / Variant (発現宿主): pLYSs / 参照: UniProt: P61024 |
#4: タンパク質 | 分子量: 22188.303 Da / 分子数: 1 / 由来タイプ: 組換発現 / 詳細: DGSPNAGSVEQ(TPO)PKK / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: CDKN1B, KIP1 / 発現宿主: Escherichia coli BL21(DE3) (大腸菌) / Variant (発現宿主): pLYSs / 参照: UniProt: P46527 |
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: Locally refined complex of SKP1-SKP2-CKS1-p27 from the hexametric SCFSKP2 E3 Ligase complex タイプ: COMPLEX / Entity ID: all / 由来: RECOMBINANT |
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分子量 | 値: 0.066 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) |
緩衝液 | pH: 7.8 |
試料 | 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 / 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: 122 / 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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