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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: 9c5t | |||||||||||||||||||||||||||||||||||||||
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| タイトル | Cryo EM structure of DCAF2 | |||||||||||||||||||||||||||||||||||||||
要素 |
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キーワード | LIGASE / DCAF2 / E3 ligase / DTL / DDB1 | |||||||||||||||||||||||||||||||||||||||
| 機能・相同性 | 機能・相同性情報positive regulation by virus of viral protein levels in host cell / spindle assembly involved in female meiosis / epigenetic programming in the zygotic pronuclei / UV-damage excision repair / biological process involved in interaction with symbiont / regulation of mitotic cell cycle phase transition / WD40-repeat domain binding / Cul4A-RING E3 ubiquitin ligase complex / Cul4-RING E3 ubiquitin ligase complex / mitotic G2 DNA damage checkpoint signaling ...positive regulation by virus of viral protein levels in host cell / spindle assembly involved in female meiosis / epigenetic programming in the zygotic pronuclei / UV-damage excision repair / biological process involved in interaction with symbiont / regulation of mitotic cell cycle phase transition / WD40-repeat domain binding / Cul4A-RING E3 ubiquitin ligase complex / Cul4-RING E3 ubiquitin ligase complex / mitotic G2 DNA damage checkpoint signaling / Cul4B-RING E3 ubiquitin ligase complex / ubiquitin ligase complex scaffold activity / negative regulation of reproductive process / negative regulation of developmental process / viral release from host cell / cullin family protein binding / positive regulation of G2/M transition of mitotic cell cycle / protein monoubiquitination / ectopic germ cell programmed cell death / response to UV / positive regulation of viral genome replication / translesion synthesis / proteasomal protein catabolic process / positive regulation of gluconeogenesis / nucleotide-excision repair / sperm end piece / Recognition of DNA damage by PCNA-containing replication complex / regulation of circadian rhythm / DNA Damage Recognition in GG-NER / Dual Incision in GG-NER / Transcription-Coupled Nucleotide Excision Repair (TC-NER) / Formation of TC-NER Pre-Incision Complex / Wnt signaling pathway / Formation of Incision Complex in GG-NER / Dual incision in TC-NER / protein polyubiquitination / Gap-filling DNA repair synthesis and ligation in TC-NER / positive regulation of protein catabolic process / cellular response to UV / rhythmic process / chromosome / site of double-strand break / sperm principal piece / Neddylation / sperm midpiece / nuclear membrane / ubiquitin-dependent protein catabolic process / damaged DNA binding / proteasome-mediated ubiquitin-dependent protein catabolic process / protein-macromolecule adaptor activity / DNA replication / chromosome, telomeric region / regulation of cell cycle / protein ubiquitination / DNA repair / apoptotic process / DNA damage response / centrosome / negative regulation of apoptotic process / protein-containing complex binding / nucleolus / protein-containing complex / : / DNA binding / extracellular exosome / nucleoplasm / nucleus / cytoplasm / cytosol 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: 3.36 Å | |||||||||||||||||||||||||||||||||||||||
データ登録者 | McMahon, E.J. / Wang, W. | |||||||||||||||||||||||||||||||||||||||
| 資金援助 | 1件
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引用 | ジャーナル: Structure / 年: 2025タイトル: Structural basis for DCAF2 as a novel E3 ligase for PROTAC-mediated targeted protein degradation. 著者: Evan J McMahon / Alexander G Cioffi / Patrick R Visperas / Yueqing Lin / Michael Shaghafi / Courtney M Daczkowski / Johannes C Hermann / Robert A Everley / Richard M Neve / Daniel A Erlanson ...著者: Evan J McMahon / Alexander G Cioffi / Patrick R Visperas / Yueqing Lin / Michael Shaghafi / Courtney M Daczkowski / Johannes C Hermann / Robert A Everley / Richard M Neve / Daniel A Erlanson / Kevin R Webster / Vikram Narayan / Weiru Wang / ![]() 要旨: Targeted protein degradation (TPD) leverages the ubiquitin-proteasome system to eliminate disease-causing proteins via E3 ligases. To date, the field is limited to utilizing a few of the over 600 ...Targeted protein degradation (TPD) leverages the ubiquitin-proteasome system to eliminate disease-causing proteins via E3 ligases. To date, the field is limited to utilizing a few of the over 600 human E3 ligases. To expand this repertoire, we conducted structural and functional validation of DDB1 (Damage-specific DNA binding protein 1) and Cullin-associated factor (DCAF)2 (DTL/CDT2), a Cullin4-RING ligase substrate adaptor implicated in DNA damage response and cancer, as a novel E3 for TPD. Cryoelectron microscopy (cryo-EM) structures of the DCAF2:DDB1:DDA1 complex (3.3 Å), a ligand bound complex (3.1 Å), and a ternary complex with a covalent proteolysis-targeting chimera (PROTAC) and BRD4 (3.4 Å) reveal PROTAC-mediated substrate recruitment. Using covalent bifunctional tool compounds engaging residue C141 in the WD40 domain, we demonstrate robust ubiquitination in biochemical assays and cellular TPD using the COFFEE (covalent functionalization followed by E3 electroporation) method. These findings position DCAF2 as a promising E3 adaptor for PROTAC strategies and identify C141 as a relevant site for future PROTAC discovery. | |||||||||||||||||||||||||||||||||||||||
| 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 | 9c5t.cif.gz | 303.8 KB | 表示 | PDBx/mmCIF形式 |
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| PDB形式 | pdb9c5t.ent.gz | 238.8 KB | 表示 | PDB形式 |
| PDBx/mmJSON形式 | 9c5t.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/c5/9c5t ftp://data.pdbj.org/pub/pdb/validation_reports/c5/9c5t | HTTPS FTP |
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-関連構造データ
| 関連構造データ | ![]() 45224MC ![]() 9c5uC ![]() 9c5vC 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
| #1: タンパク質 | 分子量: 51887.121 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: DTL, CDT2, CDW1, DCAF2, L2DTL, RAMP発現宿主: ![]() 参照: UniProt: Q9NZJ0 |
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| #2: タンパク質 | 分子量: 127097.469 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: DDB1, XAP1発現宿主: ![]() 参照: UniProt: Q16531 |
| Has protein modification | Y |
-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: DCAF2 / タイプ: COMPLEX / Entity ID: all / 由来: RECOMBINANT |
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| 由来(天然) | 生物種: Homo sapiens (ヒト) |
| 由来(組換発現) | 生物種: ![]() |
| 緩衝液 | pH: 7.5 |
| 試料 | 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES |
| 急速凍結 | 凍結剤: ETHANE |
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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: SPOT SCAN |
| 電子レンズ | モード: BRIGHT FIELD / 倍率(公称値): 105000 X / 最大 デフォーカス(公称値): 1600 nm / 最小 デフォーカス(公称値): 1200 nm / Cs: 2.7 mm |
| 試料ホルダ | 凍結剤: NITROGEN 試料ホルダーモデル: FEI TITAN KRIOS AUTOGRID HOLDER |
| 撮影 | 平均露光時間: 1.4 sec. / 電子線照射量: 51.87 e/Å2 / フィルム・検出器のモデル: GATAN K3 (6k x 4k) / 撮影したグリッド数: 1 / 実像数: 7179 |
| 電子光学装置 | 位相板: VOLTA PHASE PLATE |
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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 | ||||||||||||||||||||||||||||||||||||
| 粒子像の選択 | 選択した粒子像数: 2057826 | ||||||||||||||||||||||||||||||||||||
| 対称性 | 点対称性: C1 (非対称) | ||||||||||||||||||||||||||||||||||||
| 3次元再構成 | 解像度: 3.36 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 124770 / 対称性のタイプ: POINT | ||||||||||||||||||||||||||||||||||||
| 原子モデル構築 | Source name: AlphaFold / タイプ: in silico model | ||||||||||||||||||||||||||||||||||||
| 精密化 | 最高解像度: 3.36 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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ムービー
コントローラー
万見について




Homo sapiens (ヒト)
引用





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