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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: 9dde | ||||||||||||
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タイトル | ncPRC1RYBP bound to H2AK119Ub/H1.4 chromatosome | ||||||||||||
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![]() | Gene Regulation/DNA / DNA complex protein / Gene Regulation-DNA complex | ||||||||||||
機能・相同性 | ![]() histone H2AK119 ubiquitin ligase activity / PRC1 complex / RING-like zinc finger domain binding / regulation of kidney development / segment specification / rostrocaudal neural tube patterning / ubiquitin-protein transferase activator activity / somatic stem cell division / embryonic skeletal system morphogenesis / regulation of adaxial/abaxial pattern formation ...histone H2AK119 ubiquitin ligase activity / PRC1 complex / RING-like zinc finger domain binding / regulation of kidney development / segment specification / rostrocaudal neural tube patterning / ubiquitin-protein transferase activator activity / somatic stem cell division / embryonic skeletal system morphogenesis / regulation of adaxial/abaxial pattern formation / sex chromatin / positive regulation of immature T cell proliferation in thymus / PcG protein complex / negative regulation of DNA recombination / SUMOylation of DNA methylation proteins / Apoptosis induced DNA fragmentation / gastrulation with mouth forming second / SUMOylation of RNA binding proteins / chromosome condensation / hypothalamus gonadotrophin-releasing hormone neuron development / anterior/posterior axis specification / female meiosis I / positive regulation of ubiquitin-protein transferase activity / positive regulation of protein monoubiquitination / fat pad development / nucleosomal DNA binding / mitochondrion transport along microtubule / Formation of Senescence-Associated Heterochromatin Foci (SAHF) / DNA methylation-dependent constitutive heterochromatin formation / female gonad development / negative regulation of gene expression, epigenetic / seminiferous tubule development / RUNX1 interacts with co-factors whose precise effect on RUNX1 targets is not known / Transcriptional Regulation by E2F6 / male meiosis I / germ cell development / hemopoiesis / humoral immune response / negative regulation of apoptotic signaling pathway / MLL1 complex / positive regulation of intrinsic apoptotic signaling pathway by p53 class mediator / cellular response to interleukin-1 / ubiquitin ligase complex / SUMOylation of DNA damage response and repair proteins / heterochromatin / energy homeostasis / regulation of neuron apoptotic process / regulation of proteasomal protein catabolic process / positive regulation of B cell proliferation / Maturation of protein E / Maturation of protein E / ER Quality Control Compartment (ERQC) / negative regulation of proteasomal ubiquitin-dependent protein catabolic process / Myoclonic epilepsy of Lafora / FLT3 signaling by CBL mutants / Prevention of phagosomal-lysosomal fusion / IRAK2 mediated activation of TAK1 complex / Alpha-protein kinase 1 signaling pathway / Glycogen synthesis / IRAK1 recruits IKK complex / IRAK1 recruits IKK complex upon TLR7/8 or 9 stimulation / Membrane binding and targetting of GAG proteins / Endosomal Sorting Complex Required For Transport (ESCRT) / Regulation of TBK1, IKKε (IKBKE)-mediated activation of IRF3, IRF7 / Negative regulation of FLT3 / PTK6 Regulates RTKs and Their Effectors AKT1 and DOK1 / Regulation of TBK1, IKKε-mediated activation of IRF3, IRF7 upon TLR3 ligation / Constitutive Signaling by NOTCH1 HD Domain Mutants / IRAK2 mediated activation of TAK1 complex upon TLR7/8 or 9 stimulation / NOTCH2 Activation and Transmission of Signal to the Nucleus / TICAM1,TRAF6-dependent induction of TAK1 complex / cellular response to dexamethasone stimulus / TICAM1-dependent activation of IRF3/IRF7 / APC/C:Cdc20 mediated degradation of Cyclin B / Regulation of FZD by ubiquitination / negative regulation of DNA-binding transcription factor activity / Downregulation of ERBB4 signaling / APC-Cdc20 mediated degradation of Nek2A / p75NTR recruits signalling complexes / InlA-mediated entry of Listeria monocytogenes into host cells / TRAF6 mediated IRF7 activation in TLR7/8 or 9 signaling / TRAF6-mediated induction of TAK1 complex within TLR4 complex / Regulation of pyruvate metabolism / Regulation of innate immune responses to cytosolic DNA / NF-kB is activated and signals survival / Downregulation of ERBB2:ERBB3 signaling / Pexophagy / NRIF signals cell death from the nucleus / SUMOylation of transcription cofactors / VLDLR internalisation and degradation / Regulation of PTEN localization / SUMOylation of chromatin organization proteins / Activated NOTCH1 Transmits Signal to the Nucleus / Synthesis of active ubiquitin: roles of E1 and E2 enzymes / Regulation of BACH1 activity / MAP3K8 (TPL2)-dependent MAPK1/3 activation / TICAM1, RIP1-mediated IKK complex recruitment / Translesion synthesis by REV1 / epigenetic regulation of gene expression / Activation of IRF3, IRF7 mediated by TBK1, IKKε (IKBKE) 類似検索 - 分子機能 | ||||||||||||
生物種 | ![]() 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: 3.2 Å | ||||||||||||
![]() | Godinez-Lopez, V. / Valencia-Sanchez, M.I. / Armache, J.P. / Armache, K.-J. | ||||||||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Read-write mechanisms of H2A ubiquitination by Polycomb repressive complex 1. 著者: Victoria Godínez López / Marco Igor Valencia-Sánchez / Stephen Abini-Agbomson / Jonathan F Thomas / Rachel Lee / Pablo De Ioannes / Brian A Sosa / Jean-Paul Armache / Karim-Jean Armache / ![]() 要旨: Epigenetic inheritance of silent chromatin domains is fundamental to cellular memory during embryogenesis, but it must overcome the dilution of repressive histone modifications during DNA replication. ...Epigenetic inheritance of silent chromatin domains is fundamental to cellular memory during embryogenesis, but it must overcome the dilution of repressive histone modifications during DNA replication. One such modification, histone H2A lysine 119 monoubiquitination (H2AK119Ub), needs to be re-established by the Polycomb repressive complex 1 (PRC1) E3 ligase to restore the silent Polycomb domain. However, the exact mechanism behind this restoration remains unknown. Here, combining cryo-electron microscopy (cryo-EM) and functional approaches, we characterize the read-write mechanism of the non-canonical PRC1-containing RYBP (ncPRC1). This mechanism, which functions as a positive-feedback loop in epigenetic regulation, emphasizes the pivotal role of ncPRC1 in restoring H2AK119Ub. We observe an asymmetrical binding of ncPRC1 to H2AK119Ub nucleosomes, guided in part by the N-terminal zinc-finger domain of RYBP binding to residual H2AK119Ub on nascent chromatin. This recognition positions the RING domains of RING1B and BMI1 on the unmodified nucleosome side, enabling recruitment of the E2 enzyme to ubiquitinate H2AK119 within the same nucleosome (intra-nucleosome read-write) or across nucleosomes (inter-nucleosome read-write). Collectively, our findings provide key structural and mechanistic insights into the dynamic interplay of epigenetic regulation, highlighting the significance of ncPRC1 in H2AK119Ub restoration to sustain repressive chromatin domains. | ||||||||||||
履歴 |
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構造の表示
構造ビューア | 分子: ![]() ![]() |
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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 | ![]() | 425 KB | 表示 | ![]() |
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PDB形式 | ![]() | 313.3 KB | 表示 | ![]() |
PDBx/mmJSON形式 | ![]() | ツリー表示 | ![]() | |
その他 | ![]() |
-検証レポート
文書・要旨 | ![]() | 1.1 MB | 表示 | ![]() |
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文書・詳細版 | ![]() | 1.1 MB | 表示 | |
XML形式データ | ![]() | 52.7 KB | 表示 | |
CIF形式データ | ![]() | 81.5 KB | 表示 | |
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
-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
-タンパク質 , 9種, 13分子 AEBFCGDHKLMNO
#1: タンパク質 | 分子量: 15435.126 Da / 分子数: 2 / 変異: G103A / 由来タイプ: 組換発現 由来: (組換発現) ![]() 発現宿主: ![]() ![]() #2: タンパク質 | 分子量: 11394.426 Da / 分子数: 2 / 由来タイプ: 組換発現 由来: (組換発現) ![]() 発現宿主: ![]() ![]() #3: タンパク質 | 分子量: 14067.398 Da / 分子数: 2 / 変異: G100R, K119C / 由来タイプ: 組換発現 由来: (組換発現) ![]() 発現宿主: ![]() ![]() #4: タンパク質 | 分子量: 13979.291 Da / 分子数: 2 / 変異: S33T / 由来タイプ: 組換発現 由来: (組換発現) ![]() 発現宿主: ![]() ![]() #7: タンパク質 | | 分子量: 37006.062 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() ![]() #8: タンパク質 | | 分子量: 37706.371 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() ![]() #9: タンパク質 | | 分子量: 24863.625 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() ![]() #10: タンパク質 | | 分子量: 8622.922 Da / 分子数: 1 / 変異: G76C / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() ![]() #11: タンパク質 | | 分子量: 21931.521 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() ![]() |
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-DNA鎖 , 2種, 2分子 IJ
#5: DNA鎖 | 分子量: 57982.918 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) / 発現宿主: ![]() ![]() |
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#6: DNA鎖 | 分子量: 57488.551 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) / 発現宿主: ![]() ![]() |
-非ポリマー , 1種, 5分子 
#12: 化合物 | ChemComp-ZN / |
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-詳細
研究の焦点であるリガンドがあるか | N |
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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 |
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分子量 |
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由来(天然) |
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由来(組換発現) |
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緩衝液 | pH: 7.5 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
試料 | 濃度: 0.1 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 % / 凍結前の試料温度: 298 K |
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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: ![]() |
電子レンズ | モード: BRIGHT FIELD / 最大 デフォーカス(公称値): 2500 nm / 最小 デフォーカス(公称値): 1000 nm |
撮影 | 電子線照射量: 61.06 e/Å2 / フィルム・検出器のモデル: GATAN K3 (6k x 4k) / 実像数: 7820 |
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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: 1394967 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3次元再構成 | 解像度: 3.2 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 205635 / 対称性のタイプ: POINT | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
原子モデル構築 |
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原子モデル構築 |
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