+データを開く
-基本情報
登録情報 | データベース: PDB / ID: 8tl6 | ||||||
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タイトル | Cryo-EM structure of DDB1deltaB-DDA1-DCAF5 | ||||||
要素 |
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キーワード | LIGASE / E3 ligase / protein degradation / cryo-EM / WD40 | ||||||
機能・相同性 | 機能・相同性情報 negative regulation of fatty acid biosynthetic process / positive regulation by virus of viral protein levels in host cell / epigenetic programming in the zygotic pronuclei / spindle assembly involved in female meiosis / Cul4-RING E3 ubiquitin ligase complex / UV-damage excision repair / biological process involved in interaction with symbiont / regulation of mitotic cell cycle phase transition / Cul4A-RING E3 ubiquitin ligase complex / WD40-repeat domain binding ...negative regulation of fatty acid biosynthetic process / positive regulation by virus of viral protein levels in host cell / epigenetic programming in the zygotic pronuclei / spindle assembly involved in female meiosis / Cul4-RING E3 ubiquitin ligase complex / UV-damage excision repair / biological process involved in interaction with symbiont / regulation of mitotic cell cycle phase transition / Cul4A-RING E3 ubiquitin ligase complex / WD40-repeat domain binding / ubiquitin ligase complex scaffold activity / Cul4B-RING E3 ubiquitin ligase complex / negative regulation of reproductive process / negative regulation of developmental process / cullin family protein binding / viral release from host cell / ectopic germ cell programmed cell death / proteasomal protein catabolic process / positive regulation of viral genome replication / positive regulation of gluconeogenesis / regulation of circadian rhythm / nucleotide-excision repair / Recognition of DNA damage by PCNA-containing replication complex / DNA Damage Recognition in GG-NER / Transcription-Coupled Nucleotide Excision Repair (TC-NER) / Formation of TC-NER Pre-Incision Complex / Dual Incision in GG-NER / Wnt signaling pathway / Formation of Incision Complex in GG-NER / Dual incision in TC-NER / Gap-filling DNA repair synthesis and ligation in TC-NER / protein polyubiquitination / positive regulation of protein catabolic process / rhythmic process / cellular response to UV / positive regulation of proteasomal ubiquitin-dependent protein catabolic process / Neddylation / protein-macromolecule adaptor activity / site of double-strand break / chromosome, telomeric region / ubiquitin-dependent protein catabolic process / proteasome-mediated ubiquitin-dependent protein catabolic process / damaged DNA binding / protein ubiquitination / DNA repair / DNA damage response / negative regulation of apoptotic process / protein-containing complex binding / nucleolus / apoptotic process / protein-containing complex / DNA binding / extracellular space / extracellular exosome / nucleoplasm / nucleus / cytoplasm 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: 2.63 Å | ||||||
データ登録者 | Yue, H. / Hunkeler, M. / Roy Burman, S.S. / Fischer, E.S. | ||||||
資金援助 | 米国, 1件
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引用 | ジャーナル: Nature / 年: 2024 タイトル: Targeting DCAF5 suppresses SMARCB1-mutant cancer by stabilizing SWI/SNF. 著者: Sandi Radko-Juettner / Hong Yue / Jacquelyn A Myers / Raymond D Carter / Alexis N Robertson / Priya Mittal / Zhexin Zhu / Baranda S Hansen / Katherine A Donovan / Moritz Hunkeler / Wojciech ...著者: Sandi Radko-Juettner / Hong Yue / Jacquelyn A Myers / Raymond D Carter / Alexis N Robertson / Priya Mittal / Zhexin Zhu / Baranda S Hansen / Katherine A Donovan / Moritz Hunkeler / Wojciech Rosikiewicz / Zhiping Wu / Meghan G McReynolds / Shourya S Roy Burman / Anna M Schmoker / Nada Mageed / Scott A Brown / Robert J Mobley / Janet F Partridge / Elizabeth A Stewart / Shondra M Pruett-Miller / Behnam Nabet / Junmin Peng / Nathanael S Gray / Eric S Fischer / Charles W M Roberts / 要旨: Whereas oncogenes can potentially be inhibited with small molecules, the loss of tumour suppressors is more common and is problematic because the tumour-suppressor proteins are no longer present to ...Whereas oncogenes can potentially be inhibited with small molecules, the loss of tumour suppressors is more common and is problematic because the tumour-suppressor proteins are no longer present to be targeted. Notable examples include SMARCB1-mutant cancers, which are highly lethal malignancies driven by the inactivation of a subunit of SWI/SNF (also known as BAF) chromatin-remodelling complexes. Here, to generate mechanistic insights into the consequences of SMARCB1 mutation and to identify vulnerabilities, we contributed 14 SMARCB1-mutant cell lines to a near genome-wide CRISPR screen as part of the Cancer Dependency Map Project. We report that the little-studied gene DDB1-CUL4-associated factor 5 (DCAF5) is required for the survival of SMARCB1-mutant cancers. We show that DCAF5 has a quality-control function for SWI/SNF complexes and promotes the degradation of incompletely assembled SWI/SNF complexes in the absence of SMARCB1. After depletion of DCAF5, SMARCB1-deficient SWI/SNF complexes reaccumulate, bind to target loci and restore SWI/SNF-mediated gene expression to levels that are sufficient to reverse the cancer state, including in vivo. Consequently, cancer results not from the loss of SMARCB1 function per se, but rather from DCAF5-mediated degradation of SWI/SNF complexes. These data indicate that therapeutic targeting of ubiquitin-mediated quality-control factors may effectively reverse the malignant state of some cancers driven by disruption of tumour suppressor complexes. | ||||||
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 | 8tl6.cif.gz | 418.3 KB | 表示 | PDBx/mmCIF形式 |
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PDB形式 | pdb8tl6.ent.gz | 324.8 KB | 表示 | PDB形式 |
PDBx/mmJSON形式 | 8tl6.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 | 8tl6_validation.pdf.gz | 1.3 MB | 表示 | wwPDB検証レポート |
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文書・詳細版 | 8tl6_full_validation.pdf.gz | 1.3 MB | 表示 | |
XML形式データ | 8tl6_validation.xml.gz | 45.9 KB | 表示 | |
CIF形式データ | 8tl6_validation.cif.gz | 67.8 KB | 表示 | |
アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/tl/8tl6 ftp://data.pdbj.org/pub/pdb/validation_reports/tl/8tl6 | HTTPS FTP |
-関連構造データ
関連構造データ | 41363MC 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 (文献) |
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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: 96425.586 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: Trichoplusia ni (イラクサキンウワバ) / 参照: UniProt: Q16531 |
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#2: タンパク質 | 分子量: 108948.688 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: DCAF5, BCRG2, KIAA1824, WDR22 / 発現宿主: Trichoplusia ni (イラクサキンウワバ) / 参照: UniProt: Q96JK2 |
#3: タンパク質 | 分子量: 14542.154 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: DDA1, C19orf58, PCIA1 / 発現宿主: Trichoplusia ni (イラクサキンウワバ) / 参照: UniProt: Q9BW61 |
-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 DDB1deltaB-DDA1-DCAF5 / タイプ: COMPLEX / Entity ID: all / 由来: RECOMBINANT | |||||||||||||||
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分子量 | 値: 0.22 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: Trichoplusia ni (イラクサキンウワバ) | |||||||||||||||
緩衝液 | pH: 7.5 / 詳細: 25mM HEPES, pH 7.4, 200mM NaCl, 4mM TCEP | |||||||||||||||
緩衝液成分 |
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試料 | 濃度: 0.9 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: 300 divisions/in. / グリッドのタイプ: Quantifoil R1.2/1.3 | |||||||||||||||
急速凍結 | 装置: LEICA EM GP / 凍結剤: NITROGEN / 湿度: 90 % / 凍結前の試料温度: 283 K |
-電子顕微鏡撮影
実験機器 | モデル: Talos Arctica / 画像提供: FEI Company |
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顕微鏡 | モデル: FEI TALOS ARCTICA |
電子銃 | 電子線源: FIELD EMISSION GUN / 加速電圧: 200 kV / 照射モード: FLOOD BEAM |
電子レンズ | モード: BRIGHT FIELD / 倍率(公称値): 36000 X / 最大 デフォーカス(公称値): 2500 nm / 最小 デフォーカス(公称値): 1500 nm / Cs: 2.7 mm / C2レンズ絞り径: 50 µm / アライメント法: COMA FREE |
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: 4.494 sec. / 電子線照射量: 53.349 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: 1072 / 詳細: 50 frames per movie |
-解析
EMソフトウェア |
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CTF補正 | 詳細: implemented in cryoSPARCv3.2 / タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||||||||||||||||||||||
粒子像の選択 | 選択した粒子像数: 1404938 | ||||||||||||||||||||||||||||||||||||||||||||
対称性 | 点対称性: C1 (非対称) | ||||||||||||||||||||||||||||||||||||||||||||
3次元再構成 | 解像度: 2.63 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 547805 / アルゴリズム: FOURIER SPACE / 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: 97 / プロトコル: OTHER / 空間: REAL | ||||||||||||||||||||||||||||||||||||||||||||
原子モデル構築 | 3D fitting-ID: 1
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精密化 | 交差検証法: NONE 立体化学のターゲット値: GeoStd + Monomer Library + CDL v1.2 | ||||||||||||||||||||||||||||||||||||||||||||
原子変位パラメータ | Biso mean: 41.71 Å2 | ||||||||||||||||||||||||||||||||||||||||||||
拘束条件 |
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