登録情報 データベース : EMDB / ID : EMD-46771 ダウンロードとリンクタイトル ncPRC1RYBP bound to H2AK119Ub/H1.4 chromatosome マップデータOverall map of ncPRC1RYBP bound to H2AK119Ub/H1.4 chromatosome 詳細 試料複合体 : ncPRC1RYBP bound to H2AK119Ub/H1.4 Chromatosome複合体 : Histones複合体 : Histone H3.2複合体 : Histone H4複合体 : Histone H2A複合体 : Histone H2B 1.1複合体 : DNA複合体 : DNA (187-MER)複合体 : DNA (187-MER)複合体 : ncPRC1-RYBP複合体 : Polycomb complex protein BMI-1複合体 : E3 ubiquitin-protein ligase RING2, Ubiquitin-conjugating enzyme E2 D3複合体 : RING1 and YY1-binding protein複合体 : Ubiquitin複合体 : Histone H1.4リガンド : x 1種 詳細 キーワード DNA complex protein / Gene Regulation-DNA complex機能・相同性 機能・相同性情報分子機能 ドメイン・相同性 構成要素
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 / anterior/posterior axis specification / symbiont entry into host cell via disruption of host cell glycocalyx / positive regulation of ubiquitin-protein transferase activity / nucleosomal DNA binding / Formation of Senescence-Associated Heterochromatin Foci (SAHF) / symbiont entry into host cell via disruption of host cell envelope / DNA methylation-dependent constitutive heterochromatin formation / virus tail / negative regulation of gene expression, epigenetic / RUNX1 interacts with co-factors whose precise effect on RUNX1 targets is not known / Transcriptional Regulation by E2F6 / germ cell development / humoral immune response / hemopoiesis / MLL1 complex / negative regulation of apoptotic signaling pathway / cellular response to interleukin-1 / ubiquitin ligase complex / SUMOylation of DNA damage response and repair proteins / heterochromatin / positive regulation of B cell proliferation / negative regulation of proteasomal ubiquitin-dependent protein catabolic process / cellular response to dexamethasone stimulus / negative regulation of DNA-binding transcription factor activity / SUMOylation of transcription cofactors / SUMOylation of chromatin organization proteins / epigenetic regulation of gene expression / Regulation of PTEN gene transcription / transcription coregulator activity / apoptotic signaling pathway / chromatin DNA binding / promoter-specific chromatin binding / euchromatin / RING-type E3 ubiquitin transferase / brain development / histone deacetylase binding / positive regulation of fibroblast proliferation / transcription corepressor activity / structural constituent of chromatin / ubiquitin protein ligase activity / nucleosome / heterochromatin formation / nucleosome assembly / mitotic cell cycle / regulation of gene expression / double-stranded DNA binding / Oxidative Stress Induced Senescence / in utero embryonic development / gene expression / nucleic acid binding / protein ubiquitination / nuclear body / positive regulation of apoptotic process / chromatin remodeling / protein heterodimerization activity / apoptotic process / chromatin binding / regulation of DNA-templated transcription / positive regulation of DNA-templated transcription / negative regulation of transcription by RNA polymerase II / DNA binding / RNA binding / zinc ion binding / nucleoplasm / nucleus / cytosol / cytoplasm 類似検索 - 分子機能 Yaf2/RYBP C-terminal binding motif / RING1 and YY1-binding protein/YY1-associated factor 2 / Yaf2/RYBP C-terminal binding motif / E3 ubiquitin-protein ligase RING2 / E3 ubiquitin-protein ligase RING1/RING2 / RAWUL domain / RAWUL domain RING finger- and WD40-associated ubiquitin-like / Linker histone H1/H5 / linker histone H1 and H5 family / Zinc finger, C3HC4 type (RING finger) ... Yaf2/RYBP C-terminal binding motif / RING1 and YY1-binding protein/YY1-associated factor 2 / Yaf2/RYBP C-terminal binding motif / E3 ubiquitin-protein ligase RING2 / E3 ubiquitin-protein ligase RING1/RING2 / RAWUL domain / RAWUL domain RING finger- and WD40-associated ubiquitin-like / Linker histone H1/H5 / linker histone H1 and H5 family / Zinc finger, C3HC4 type (RING finger) / Linker histone H1/H5, domain H15 / Linker histone H1/H5 globular (H15) domain profile. / Domain in histone families 1 and 5 / Zinc finger domain / Zn-finger in Ran binding protein and others / Pectate lyase superfamily protein / Rhamnogalacturonase A/epimerase, pectate lyase-like / Zinc finger RanBP2 type profile. / Zinc finger, RanBP2-type superfamily / Zinc finger RanBP2-type signature. / Zinc finger, RanBP2-type / Pectin lyase fold / Pectin lyase fold/virulence factor / Zinc finger, RING-type, conserved site / Zinc finger RING-type signature. / Ring finger / : / Histone H2B signature. / Histone H2A conserved site / Histone H2A signature. / Histone H2B / Histone H2B / Histone H2A, C-terminal domain / C-terminus of histone H2A / Histone 2A / Histone H2A / TATA box binding protein associated factor / TATA box binding protein associated factor (TAF), histone-like fold domain / Histone H4, conserved site / Histone H4 signature. / Histone H4 / Histone H4 / CENP-T/Histone H4, histone fold / Centromere kinetochore component CENP-T histone fold / Zinc finger RING-type profile. / Histone H3 signature 1. / Zinc finger, RING-type / Histone H3 signature 2. / Histone H3 / Histone H3/CENP-A / Histone H2A/H2B/H3 / Core histone H2A/H2B/H3/H4 / Histone-fold / Zinc finger, RING/FYVE/PHD-type / Winged helix DNA-binding domain superfamily / Winged helix-like DNA-binding domain superfamily 類似検索 - ドメイン・相同性 Histone H2B 1.1 / Histone H2A type 1 / Tail fiber / Histone H1.4 / Polycomb complex protein BMI-1 / Histone H4 / Histone H3.2 / RING1 and YY1-binding protein / E3 ubiquitin-protein ligase RING2 類似検索 - 構成要素生物種 Homo sapiens (ヒト) / Xenopus laevis (アフリカツメガエル) / synthetic construct (人工物) 手法 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度 : 3.2 Å 詳細 データ登録者Godinez-Lopez V / Valencia-Sanchez MI / Armache JP / Armache K-J 資金援助 米国, 3件 詳細 詳細を隠すOrganization Grant number 国 National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS) R01GM115882 米国 National Institutes of Health/National Cancer Institute (NIH/NCI) R01CA266978 米国 The Mark Foundation 米国
引用ジャーナル : Nature / 年 : 2024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 登録 2024年8月28日 - ヘッダ(付随情報) 公開 2024年11月20日 - マップ公開 2024年11月20日 - 更新 2025年1月15日 - 現状 2025年1月15日 処理サイト : RCSB / 状態 : 公開
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