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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: 9n88 | ||||||||||||||||||||||||
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| タイトル | PROTAC-induced IRE1 ternary complex | ||||||||||||||||||||||||
要素 |
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キーワード | TRANSFERASE / Complex / degrader | ||||||||||||||||||||||||
| 機能・相同性 | 機能・相同性情報AIP1-IRE1 complex / Ire1 complex / mRNA splicing, via endonucleolytic cleavage and ligation / IRE1alpha activates chaperones / IRE1-TRAF2-ASK1 complex / insulin metabolic process / positive regulation of endoplasmic reticulum unfolded protein response / 加水分解酵素; エステル加水分解酵素; 5'-リン酸モノエステル産生エンドリボヌクレアーゼ / regulation of cellular response to hypoxia / negative regulation of receptor signaling pathway via JAK-STAT ...AIP1-IRE1 complex / Ire1 complex / mRNA splicing, via endonucleolytic cleavage and ligation / IRE1alpha activates chaperones / IRE1-TRAF2-ASK1 complex / insulin metabolic process / positive regulation of endoplasmic reticulum unfolded protein response / 加水分解酵素; エステル加水分解酵素; 5'-リン酸モノエステル産生エンドリボヌクレアーゼ / regulation of cellular response to hypoxia / negative regulation of receptor signaling pathway via JAK-STAT / RHOBTB3 ATPase cycle / platelet-derived growth factor receptor binding / target-directed miRNA degradation / elongin complex / endothelial cell proliferation / Replication of the SARS-CoV-1 genome / transcription elongation factor activity / nuclear inner membrane / IRE1-RACK1-PP2A complex / VCB complex / Cul5-RING ubiquitin ligase complex / ubiquitin-dependent protein catabolic process via the C-end degron rule pathway / Cul2-RING ubiquitin ligase complex / SUMOylation of ubiquitinylation proteins / IRE1-mediated unfolded protein response / mRNA catabolic process / negative regulation of intrinsic apoptotic signaling pathway / negative regulation of transcription elongation by RNA polymerase II / Pausing and recovery of Tat-mediated HIV elongation / Tat-mediated HIV elongation arrest and recovery / intrinsic apoptotic signaling pathway in response to endoplasmic reticulum stress / cellular response to vascular endothelial growth factor stimulus / HIV elongation arrest and recovery / Pausing and recovery of HIV elongation / cellular response to unfolded protein / regulation of macroautophagy / negative regulation of signal transduction / Tat-mediated elongation of the HIV-1 transcript / Formation of HIV-1 elongation complex containing HIV-1 Tat / Formation of HIV elongation complex in the absence of HIV Tat / ubiquitin-like ligase-substrate adaptor activity / positive regulation of vascular associated smooth muscle cell proliferation / RNA Polymerase II Transcription Elongation / Formation of RNA Pol II elongation complex / endoplasmic reticulum unfolded protein response / negative regulation of TORC1 signaling / RNA endonuclease activity / RNA Polymerase II Pre-transcription Events / ciliary tip / Hsp70 protein binding / response to endoplasmic reticulum stress / positive regulation of RNA splicing / transcription corepressor binding / negative regulation of autophagy / protein serine/threonine kinase binding / TP53 Regulates Transcription of DNA Repair Genes / positive regulation of cell differentiation / transcription initiation at RNA polymerase II promoter / transcription elongation by RNA polymerase II / cellular response to glucose stimulus / Hsp90 protein binding / ADP binding / Vif-mediated degradation of APOBEC3G / Inactivation of CSF3 (G-CSF) signaling / positive regulation of JNK cascade / Evasion by RSV of host interferon responses / Oxygen-dependent proline hydroxylation of Hypoxia-inducible Factor Alpha / Regulation of expression of SLITs and ROBOs / cell morphogenesis / cellular response to hydrogen peroxide / ubiquitin-protein transferase activity / : / transcription corepressor activity / Antigen processing: Ubiquitination & Proteasome degradation / positive regulation of proteasomal ubiquitin-dependent protein catabolic process / Neddylation / microtubule cytoskeleton / regulation of gene expression / protein-containing complex assembly / Replication of the SARS-CoV-2 genome / cellular response to hypoxia / DNA-binding transcription factor binding / molecular adaptor activity / amyloid fibril formation / ubiquitin-dependent protein catabolic process / protein phosphorylation / proteasome-mediated ubiquitin-dependent protein catabolic process / protein-macromolecule adaptor activity / non-specific serine/threonine protein kinase / protein stabilization / cilium / protein ubiquitination / negative regulation of cell population proliferation / negative regulation of gene expression / protein serine kinase activity / hydrolase activity / protein serine/threonine kinase activity / ubiquitin protein ligase binding / regulation of DNA-templated transcription / regulation of transcription by RNA polymerase II 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: 2.6 Å | ||||||||||||||||||||||||
データ登録者 | Du, J. / Johnson, M. / Azumaya, C. / Rohou, A. / Hsu, P.L. / Ashkenazi, A. | ||||||||||||||||||||||||
| 資金援助 | 米国, 1件
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引用 | ジャーナル: Nat Commun / 年: 2025タイトル: Chemically-induced degradation of the endoplasmic-reticulum stress sensor IRE1 by a VHL-recruiting chimera. 著者: Jin Du / Elisia Villemure / Matthew Johnson / Caleigh Azumaya / Catarina J Gaspar / Scot Marsters / David Lawrence / Scott Foster / Alexis Rohou / Tommy K Cheung / Christopher M Rose / Thomas ...著者: Jin Du / Elisia Villemure / Matthew Johnson / Caleigh Azumaya / Catarina J Gaspar / Scot Marsters / David Lawrence / Scott Foster / Alexis Rohou / Tommy K Cheung / Christopher M Rose / Thomas Garner / Soo Ro / Kevin Clark / Maureen H Beresini / Marie-Gabrielle Braun / Joachim Rudolph / Peter Hsu / Avi Ashkenazi / ![]() 要旨: The endoplasmic-reticulum (ER) transmembrane protein IRE1 mitigates ER stress through kinase-endoribonuclease and scaffolding activities. Cancer cells often co-opt IRE1 to facilitate growth. An IRE1- ...The endoplasmic-reticulum (ER) transmembrane protein IRE1 mitigates ER stress through kinase-endoribonuclease and scaffolding activities. Cancer cells often co-opt IRE1 to facilitate growth. An IRE1-RNase inhibitor has entered clinical trials; however, recent work uncovered a significant nonenzymatic IRE1 dependency in cancer. To fully disrupt IRE1, we describe a proteolysis-targeting chimera (G6374) that couples an IRE1-kinase ligand to a compound that binds the ubiquitin Cullin-RING Ligase (CRL) substrate receptor, VHL. G6374 induces a stable, cooperative interaction between IRE1 and VHL, driving K48-linked ubiquitination on two principal lysine residues in the IRE1-kinase domain and inducing proteasomal IRE1 degradation. Cryogenic electron microscopy and mutagenesis studies reveal a 2:2 IRE1:VHL ternary-complex topology and critical interactional features, informing future designs. G6374 blocks growth of IRE1-dependent cancer cells irrespective of their dependency mode, while sparing IRE1-independent cells. We provide a proof-of-concept for VHL-based degradation of an ER-transmembrane protein, advancing strategies to fully disrupt IRE1. | ||||||||||||||||||||||||
| 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 | 9n88.cif.gz | 253.8 KB | 表示 | PDBx/mmCIF形式 |
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| PDB形式 | pdb9n88.ent.gz | 表示 | PDB形式 | |
| PDBx/mmJSON形式 | 9n88.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/n8/9n88 ftp://data.pdbj.org/pub/pdb/validation_reports/n8/9n88 | HTTPS FTP |
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-関連構造データ
| 関連構造データ | ![]() 49119MC 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 F&H 検索 |
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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
-タンパク質 , 3種, 6分子 AEBFGC
| #1: タンパク質 | 分子量: 46329.266 Da / 分子数: 2 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: ERN1, IRE1 / 細胞株 (発現宿主): Sf9発現宿主: ![]() 参照: UniProt: O75460, non-specific serine/threonine protein kinase, 加水分解酵素; エステル加水分解酵素; 5'-リン酸モノエステル産生エンドリボヌクレアーゼ #2: タンパク質 | 分子量: 17031.412 Da / 分子数: 2 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: VHL / 発現宿主: ![]() #3: タンパク質 | 分子量: 10625.190 Da / 分子数: 2 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: ELOC, TCEB1 / 発現宿主: ![]() |
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-タンパク質・ペプチド , 1種, 2分子 DH
| #4: タンパク質・ペプチド | 分子量: 639.723 Da / 分子数: 2 / Fragment: 68-73 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: ELOB, TCEB2 / 発現宿主: ![]() |
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-非ポリマー , 2種, 8分子 
| #5: 化合物 | 分子量: 883.156 Da / 分子数: 2 / 由来タイプ: 合成 / 式: C47H66N10O5S / タイプ: SUBJECT OF INVESTIGATION #6: 水 | ChemComp-HOH / | |
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-詳細
| 研究の焦点であるリガンドがあるか | Y |
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| 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: IRE1:G6374:VHL:Eloc:Elob / タイプ: COMPLEX 詳細: G6374 is the PROTAC that recruits VHL to IRE1. IRE1 is recombinantly expressed and purified from Sf9 cells, VHL is co-expressed and co-purified with Eloc and Elob in BL21 cells. The complex ...詳細: G6374 is the PROTAC that recruits VHL to IRE1. IRE1 is recombinantly expressed and purified from Sf9 cells, VHL is co-expressed and co-purified with Eloc and Elob in BL21 cells. The complex was formed by adding each component in vitro. Because the EloB density had insufficient quality for de novo modeling, we built only residues 68 to 73 into the structure. 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: ![]() 株: Sf9 | |||||||||||||||||||||||||
| 緩衝液 | pH: 7.2 詳細: I used 0.5 mM BS3 for crosslinking the protein complex, then diluted it to 0.05 mM for grid preparation. | |||||||||||||||||||||||||
| 緩衝液成分 |
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| 試料 | 濃度: 0.15 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES / 詳細: Got monodispersed particles on the grid. | |||||||||||||||||||||||||
| 試料支持 | 詳細: The grid was coated with a hydrophilic self-assembled PEG monolayer to improve particle distribution. グリッドの材料: GOLD / グリッドのサイズ: 300 divisions/in. / グリッドのタイプ: UltrAuFoil R1.2/1.3 | |||||||||||||||||||||||||
| 急速凍結 | 装置: FEI VITROBOT MARK IV / 凍結剤: ETHANE / 湿度: 100 % / 凍結前の試料温度: 277.15 K / 詳細: 7 force; 2 s blot time. |
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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: FLOOD BEAM |
| 電子レンズ | モード: BRIGHT FIELD / 最大 デフォーカス(公称値): 3500 nm / 最小 デフォーカス(公称値): 600 nm |
| 撮影 | 電子線照射量: 45 e/Å2 フィルム・検出器のモデル: TFS FALCON 4i (4k x 4k) 実像数: 12400 |
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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 ONLY | ||||||||||||||||||||||||
| 粒子像の選択 | 選択した粒子像数: 5101645 | ||||||||||||||||||||||||
| 対称性 | 点対称性: C2 (2回回転対称) | ||||||||||||||||||||||||
| 3次元再構成 | 解像度: 2.6 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 400055 / 対称性のタイプ: POINT | ||||||||||||||||||||||||
| 精密化 | 最高解像度: 2.6 Å 立体化学のターゲット値: REAL-SPACE (WEIGHTED MAP SUM AT ATOM CENTERS) |
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万見について




Homo sapiens (ヒト)
米国, 1件
引用
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FIELD EMISSION GUN