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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: 9k2x | ||||||||||||||||||||||||||||||
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| タイトル | Cryo-EM structure of USP7:DNMT1 complex; open conformation | ||||||||||||||||||||||||||||||
要素 |
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キーワード | STRUCTURAL PROTEIN / DNA methylation / deubiquitination | ||||||||||||||||||||||||||||||
| 機能・相同性 | 機能・相同性情報histone H3K23ub reader activity / histone H3K18ub reader activity / histone H3K14ub reader activity / : / epigenetic programming of gene expression / regulation of telomere capping / regulation of establishment of protein localization to telomere / chromosomal DNA methylation maintenance following DNA replication / negative regulation of vascular associated smooth muscle cell apoptotic process / monoubiquitinated protein deubiquitination ...histone H3K23ub reader activity / histone H3K18ub reader activity / histone H3K14ub reader activity / : / epigenetic programming of gene expression / regulation of telomere capping / regulation of establishment of protein localization to telomere / chromosomal DNA methylation maintenance following DNA replication / negative regulation of vascular associated smooth muscle cell apoptotic process / monoubiquitinated protein deubiquitination / DNA-methyltransferase activity / regulation of retrograde transport, endosome to Golgi / cellular response to bisphenol A / deubiquitinase activity / DNA (cytosine-5-)-methyltransferase / : / DNA (cytosine-5-)-methyltransferase activity / female germ cell nucleus / DNA alkylation repair / SUMOylation of DNA methylation proteins / STAT3 nuclear events downstream of ALK signaling / methyl-CpG binding / K48-linked deubiquitinase activity / symbiont-mediated disruption of host cell PML body / DNA methylation-dependent constitutive heterochromatin formation / negative regulation of gene expression via chromosomal CpG island methylation / lncRNA binding / negative regulation of gluconeogenesis / protein deubiquitination / pericentric heterochromatin / positive regulation of vascular associated smooth muscle cell proliferation / heterochromatin / Nuclear events stimulated by ALK signaling in cancer / negative regulation of TORC1 signaling / transcription-coupled nucleotide-excision repair / negative regulation of proteasomal ubiquitin-dependent protein catabolic process / Regulation of PTEN localization / regulation of signal transduction by p53 class mediator / Synthesis of active ubiquitin: roles of E1 and E2 enzymes / replication fork / DNA methylation / PRC2 methylates histones and DNA / Defective pyroptosis / cellular response to amino acid stimulus / promoter-specific chromatin binding / regulation of protein stability / regulation of circadian rhythm / NoRC negatively regulates rRNA expression / PML body / Transcription-Coupled Nucleotide Excision Repair (TC-NER) / Formation of TC-NER Pre-Incision Complex / Dual incision in TC-NER / Gap-filling DNA repair synthesis and ligation in TC-NER / p53 binding / Regulation of TP53 Degradation / rhythmic process / chromosome / methylation / cysteine-type deubiquitinase activity / ubiquitinyl hydrolase 1 / Ub-specific processing proteases / protein stabilization / nuclear body / protein ubiquitination / negative regulation of gene expression / cysteine-type endopeptidase activity / positive regulation of gene expression / DNA-templated transcription / negative regulation of transcription by RNA polymerase II / protein-containing complex / mitochondrion / proteolysis / DNA binding / zinc ion binding / nucleoplasm / nucleus / 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: 3.75 Å | ||||||||||||||||||||||||||||||
データ登録者 | Nakamura, N. / Arita, K. | ||||||||||||||||||||||||||||||
| 資金援助 | 日本, 6件
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引用 | ジャーナル: Structure / 年: 2025タイトル: Structures of USP7 in active and inactive states bound to DNMT1 revealed by cryo-EM. 著者: Nao Nakamura / Sae Yoshimi / Amika Kikuchi / Hiroki Onoda / Satomi Kori / Makoto Nakanishi / Atsuya Nishiyama / Kyohei Arita / ![]() 要旨: The ubiquitin signal generated by UHRF1 is essential for DNA methylation maintenance by recruiting DNA methyltransferase 1 (DNMT1) to hemimethylated DNA through strong binding of its replication foci ...The ubiquitin signal generated by UHRF1 is essential for DNA methylation maintenance by recruiting DNA methyltransferase 1 (DNMT1) to hemimethylated DNA through strong binding of its replication foci targeting sequence (RFTS) domain to ubiquitinated histone H3. The ubiquitin-specific protease 7 (USP7) forms a complex with DNMT1 and removes ubiquitin from H3. However, it remains unknown how USP7 deubiquitinates ubiquitinated H3 upon strong binding of the DNMT1 RFTS domain. Here, we show the activation mechanism of USP7 by combining biochemical and structural studies. USP7 is inactive toward ubiquitinated H3 in complex with the RFTS domain. However, when complexed with DNMT1, USP7 efficiently deubiquitinates ubiquitinated H3. Cryogenic electron microscopy (cryo-EM) single particle analysis revealed that USP7 bound to DNMT1 undergoes an open (inactive) and closed (active) conformational transition. Our findings provide mechanistic insights into the activation of USP7 upon binding to DNMT1 and contribute to a better understanding of the deubiquitination process in DNA methylation maintenance. | ||||||||||||||||||||||||||||||
| 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 | 9k2x.cif.gz | 339.2 KB | 表示 | PDBx/mmCIF形式 |
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| PDB形式 | pdb9k2x.ent.gz | 255.3 KB | 表示 | PDB形式 |
| PDBx/mmJSON形式 | 9k2x.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/k2/9k2x ftp://data.pdbj.org/pub/pdb/validation_reports/k2/9k2x | HTTPS FTP |
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-関連構造データ
| 関連構造データ | ![]() 62000MC ![]() 9k2wC 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: 128884.203 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: USP7, HAUSP / 発現宿主: ![]() |
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| #2: タンパク質 | 分子量: 143559.531 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: DNMT1, AIM, CXXC9, DNMT発現宿主: ![]() 参照: UniProt: P26358, DNA (cytosine-5-)-methyltransferase |
| 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: DNMT1:USP7 / タイプ: COMPLEX / Entity ID: all / 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: ![]() |
| 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 / 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: FLOOD BEAM |
| 電子レンズ | モード: BRIGHT FIELD / 最大 デフォーカス(公称値): 1600 nm / 最小 デフォーカス(公称値): 800 nm |
| 撮影 | 電子線照射量: 62.918 e/Å2 フィルム・検出器のモデル: GATAN K3 BIOQUANTUM (6k x 4k) |
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解析
| EMソフトウェア | 名称: PHENIX / カテゴリ: モデル精密化 | ||||||||||||||||||||||||
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| CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||
| 3次元再構成 | 解像度: 3.75 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 73679 / 対称性のタイプ: POINT | ||||||||||||||||||||||||
| 精密化 | 最高解像度: 3.75 Å / 交差検証法: NONE 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)
日本, 6件
引用


PDBj









FIELD EMISSION GUN