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データを開く
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基本情報
| 登録情報 | データベース: PDB / ID: 23sr | |||||||||||||||||||||||||||||||||||||||||||||||||||
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| タイトル | Cryo-EM structure of CDK2 in complex with CRBN/DDB1 and B11 | |||||||||||||||||||||||||||||||||||||||||||||||||||
要素 |
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キーワード | CELL CYCLE / Cyclin-Dependent Kinase 2 / Cereblon / Molecular glue / Complex | |||||||||||||||||||||||||||||||||||||||||||||||||||
| 機能・相同性 | 機能・相同性情報negative regulation of monoatomic ion transmembrane transport / cyclin A1-CDK2 complex / cyclin E2-CDK2 complex / cyclin E1-CDK2 complex / cyclin A2-CDK2 complex / G2 Phase / Y chromosome / cyclin-dependent protein kinase activity / regulation of heterochromatin organization / Phosphorylation of proteins involved in G1/S transition by active Cyclin E:Cdk2 complexes ...negative regulation of monoatomic ion transmembrane transport / cyclin A1-CDK2 complex / cyclin E2-CDK2 complex / cyclin E1-CDK2 complex / cyclin A2-CDK2 complex / G2 Phase / Y chromosome / cyclin-dependent protein kinase activity / regulation of heterochromatin organization / 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) / locomotory exploration behavior / Cul4A-RING E3 ubiquitin ligase complex / centriole replication / telomere maintenance in response to DNA damage / Regulation of APC/C activators between G1/S and early anaphase / G0 and Early G1 / limb development / Activation of the pre-replicative complex / Telomere Extension By Telomerase / cyclin-dependent protein kinase holoenzyme 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 / positive regulation of Wnt signaling pathway / Cyclin E associated events during G1/S transition / Activation of ATR in response to replication stress / negative regulation of protein-containing complex assembly / centrosome duplication / Cyclin A:Cdk2-associated events at S phase entry / Cyclin A/B1/B2 associated events during G2/M transition / condensed chromosome / mitotic G1 DNA damage checkpoint signaling / cellular response to nitric oxide / post-translational protein modification / cyclin binding / positive regulation of DNA replication / negative regulation of protein localization to chromatin / regulation of mitotic cell cycle / G1/S transition of mitotic cell cycle / G2/M transition of mitotic cell cycle / positive regulation of protein-containing complex assembly / meiotic cell cycle / peptidyl-serine phosphorylation / cellular senescence / DNA Damage/Telomere Stress Induced Senescence / Meiotic recombination / CDK-mediated phosphorylation and removal of Cdc6 / SCF(Skp2)-mediated degradation of p27/p21 / Transcriptional regulation of granulopoiesis / Orc1 removal from chromatin / Cyclin D associated events in G1 / Regulation of TP53 Degradation / nuclear envelope / transcription regulator complex / Factors involved in megakaryocyte development and platelet production / ciliary basal body / Processing of DNA double-strand break ends / Senescence-Associated Secretory Phenotype (SASP) / Regulation of TP53 Activity through Phosphorylation / Potential therapeutics for SARS / proteasome-mediated ubiquitin-dependent protein catabolic process / Ras protein signal transduction / transmembrane transporter binding / DNA replication / protein phosphorylation / chromosome, telomeric region / endosome / protein ubiquitination / chromatin remodeling / protein domain specific binding / protein serine kinase activity / cell division / DNA repair / protein serine/threonine kinase activity / centrosome / positive regulation of cell population proliferation / perinuclear region of cytoplasm / magnesium ion binding / signal transduction / nucleoplasm / ATP binding / membrane / metal ion binding / nucleus / cytosol / cytoplasm 類似検索 - 分子機能 | |||||||||||||||||||||||||||||||||||||||||||||||||||
| 生物種 | Homo sapiens (ヒト)synthetic construct (人工物) | |||||||||||||||||||||||||||||||||||||||||||||||||||
| 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: 2.85 Å | |||||||||||||||||||||||||||||||||||||||||||||||||||
データ登録者 | Li, X.Z. / Jiang, Y. | |||||||||||||||||||||||||||||||||||||||||||||||||||
| 資金援助 | 中国, 1件
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引用 | ジャーナル: J Med Chem / 年: 2026タイトル: Selective CDK2 Degradation via Noncanonical Recruitment. 著者: Yuanyuan Pei / Weiye Lin / Xinzhu Li / Yuhang Meng / Yuling Yin / Benxun Pan / Lixin Zhou / Linhui Cao / Yong Cang / Yi Jiang / Wenchao Lu / Zhanchao Meng / ![]() 要旨: Cyclin-dependent kinase 2 (CDK2) represents a critical therapeutic target in tumors resistant to CDK4/6 inhibitors or with amplification. However, selective inhibition of CDK2 remains challenging ...Cyclin-dependent kinase 2 (CDK2) represents a critical therapeutic target in tumors resistant to CDK4/6 inhibitors or with amplification. However, selective inhibition of CDK2 remains challenging owing to the high structural homology among CDKs. In this study, we identify and as cereblon (CRBN)-based molecular glue degraders that selectively degrade CDK2. Ternary complex structures reveal a noncanonical recruitment mode centered on CDK2 Glu57, which bypasses the canonical G-loop/β-hairpin and kinase glycine-rich loop interactions and is stabilized by an extended CRBN-CDK2 interface. Mechanistically, these degraders inhibit retinoblastoma (Rb) phosphorylation and induce G1/S-phase arrest, suppressing CDK2-dependent cell proliferation. further exhibits improved pharmacokinetics, measurable oral bioavailability, and target engagement, achieving intratumoral CDK2 degradation following intraperitoneal administration. Collectively, this study provides a structural blueprint for designing selective kinase degraders and establishes B12 as a chemically tractable probe for targeting CDK2-driven malignancies. | |||||||||||||||||||||||||||||||||||||||||||||||||||
| 履歴 |
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構造の表示
| 構造ビューア | 分子: Molmil Jmol/JSmol |
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ダウンロードとリンク
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ダウンロード
| PDBx/mmCIF形式 | 23sr.cif.gz | 289.7 KB | 表示 | PDBx/mmCIF形式 |
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| PDB形式 | pdb23sr.ent.gz | 表示 | PDB形式 | |
| PDBx/mmJSON形式 | 23sr.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
| アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/3s/23sr ftp://data.pdbj.org/pub/pdb/validation_reports/3s/23sr | HTTPS FTP |
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-関連構造データ
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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: 53781.996 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: CRBN, AD-006 / プラスミド: pFastBac / 細胞株 (発現宿主): Sf9発現宿主: ![]() Variant (発現宿主): WT / 参照: UniProt: Q96SW2 |
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| #2: タンパク質 | 分子量: 82203.477 Da / 分子数: 1 / 由来タイプ: 組換発現 由来: (組換発現) synthetic construct (人工物), (組換発現) Homo sapiens (ヒト)プラスミド: pFastBac / 遺伝子: CDK2, CDKN2 / 細胞株 (発現宿主): Sf9 発現宿主: ![]() 参照: UniProt: P24941, cyclin-dependent kinase |
| #3: タンパク質 | 分子量: 93347.078 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / プラスミド: pFastBac / 細胞株 (発現宿主): Sf9発現宿主: ![]() |
| #4: 化合物 | ChemComp-A1E59 / 分子量: 490.912 Da / 分子数: 1 / 由来タイプ: 合成 / 式: C23H24ClFN4O5 / タイプ: SUBJECT OF INVESTIGATION |
| 研究の焦点であるリガンドがあるか | Y |
| Has protein modification | 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 |
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試料調製
| 構成要素 | 名称: CDK2 in complex with CRBN/DDB1 and B11 / タイプ: COMPLEX / Entity ID: #1-#3 / 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: ![]() 細胞: Sf9 / プラスミド: pFastBac |
| 緩衝液 | pH: 7.4 |
| 試料 | 濃度: 14 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES |
| 急速凍結 | 装置: FEI VITROBOT MARK IV / 凍結剤: ETHANE / 湿度: 100 % |
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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: FIELD EMISSION GUN / 加速電圧: 300 kV / 照射モード: OTHER |
| 電子レンズ | モード: OTHER / 最大 デフォーカス(公称値): 2000 nm / 最小 デフォーカス(公称値): 1000 nm |
| 撮影 | 電子線照射量: 50 e/Å2 / フィルム・検出器のモデル: GATAN K3 (6k x 4k) |
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解析
| EMソフトウェア |
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| CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||
| 3次元再構成 | 解像度: 2.85 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 498215 / 対称性のタイプ: POINT | ||||||||||||||||||||||||
| 精密化 | 最高解像度: 2.85 Å 立体化学のターゲット値: REAL-SPACE (WEIGHTED MAP SUM AT ATOM CENTERS) | ||||||||||||||||||||||||
| 拘束条件 |
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万見について




Homo sapiens (ヒト)
中国, 1件
引用



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FIELD EMISSION GUN