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- PDB-9dch: Single-stranded RNA-mediated PRC2 dimer -

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基本情報

登録情報
データベース: PDB / ID: 9dch
タイトルSingle-stranded RNA-mediated PRC2 dimer
要素
  • (Polycomb protein ...) x 2
  • Isoform 2 of Histone-lysine N-methyltransferase EZH2
  • Protein Jumonji
  • RBAP48
  • TERRAmut RNA
  • Zinc finger protein AEBP2
キーワードGENE REGULATION / PRC2 / RNA / RNP complex / chromatin modifier
機能・相同性
機能・相同性情報


protein localization to pericentric heterochromatin / hepatocyte homeostasis / cellular response to trichostatin A / regulation of gliogenesis / negative regulation of striated muscle cell differentiation / regulation of kidney development / [histone H3]-lysine27 N-trimethyltransferase / response to tetrachloromethane / CAF-1 complex / histone H3K27 trimethyltransferase activity ...protein localization to pericentric heterochromatin / hepatocyte homeostasis / cellular response to trichostatin A / regulation of gliogenesis / negative regulation of striated muscle cell differentiation / regulation of kidney development / [histone H3]-lysine27 N-trimethyltransferase / response to tetrachloromethane / CAF-1 complex / histone H3K27 trimethyltransferase activity / negative regulation of keratinocyte differentiation / negative regulation of retinoic acid receptor signaling pathway / cerebellar cortex development / primary miRNA binding / regulation of adaxial/abaxial pattern formation / random inactivation of X chromosome / skeletal muscle satellite cell maintenance involved in skeletal muscle regeneration / negative regulation of cardiac muscle cell proliferation / histone H3K27 methyltransferase activity / regulatory ncRNA-mediated heterochromatin formation / sex chromatin / ubiquitin-modified histone reader activity / positive regulation of cell cycle G1/S phase transition / NURF complex / facultative heterochromatin formation / NuRD complex / regulation of cell fate specification / negative regulation of stem cell population maintenance / genomic imprinting / DNA replication-dependent chromatin assembly / Transcription of E2F targets under negative control by p107 (RBL1) and p130 (RBL2) in complex with HDAC1 / ESC/E(Z) complex / regulation of stem cell differentiation / negative regulation of stem cell differentiation / protein-lysine N-methyltransferase activity / RSC-type complex / Polo-like kinase mediated events / cardiac muscle hypertrophy in response to stress / Transcription of E2F targets under negative control by DREAM complex / chromatin silencing complex / pronucleus / histone H3K9me2/3 reader activity / positive regulation of dendrite development / histone H3 methyltransferase activity / G1 to G0 transition / histone methyltransferase activity / DNA methylation-dependent constitutive heterochromatin formation / : / ATPase complex / negative regulation of G1/S transition of mitotic cell cycle / spinal cord development / negative regulation of gene expression, epigenetic / lncRNA binding / G1/S-Specific Transcription / synaptic transmission, GABAergic / histone deacetylase complex / Transcriptional Regulation by E2F6 / Sin3-type complex / positive regulation of MAP kinase activity / positive regulation of stem cell population maintenance / histone methyltransferase complex / oligodendrocyte differentiation / RNA Polymerase I Transcription Initiation / negative regulation of transcription elongation by RNA polymerase II / G0 and Early G1 / positive regulation of protein serine/threonine kinase activity / positive regulation of GTPase activity / negative regulation of cell differentiation / cardiac muscle cell proliferation / positive regulation of epithelial to mesenchymal transition / ribonucleoprotein complex binding / subtelomeric heterochromatin formation / RNA polymerase II core promoter sequence-specific DNA binding / Cyclin E associated events during G1/S transition / pericentric heterochromatin / Transcriptional regulation of brown and beige adipocyte differentiation by EBF2 / Cyclin A:Cdk2-associated events at S phase entry / nucleosome binding / spleen development / keratinocyte differentiation / Regulation of TP53 Activity through Acetylation / heterochromatin / protein localization to chromatin / negative regulation of cytokine production involved in inflammatory response / Deposition of new CENPA-containing nucleosomes at the centromere / liver regeneration / B cell differentiation / negative regulation of cell migration / thymus development / SUMOylation of chromatin organization proteins / ubiquitin binding / Regulation of PTEN gene transcription / central nervous system development / transcription corepressor binding / cellular response to leukemia inhibitory factor / stem cell differentiation / ERCC6 (CSB) and EHMT2 (G9a) positively regulate rRNA expression / PRC2 methylates histones and DNA / Regulation of endogenous retroelements by KRAB-ZFP proteins / Defective pyroptosis
類似検索 - 分子機能
: / : / Polycomb protein SUZ12-like, Zn domain / EZH2, SET domain / Polycomb protein, VEFS-Box / VEFS-Box of polycomb protein / Histone-lysine N-methyltransferase EZH1/EZH2 / Polycomb repressive complex 2 subunit EZH1/EZH2, tri-helical domain / Pre-SET CXC domain / : ...: / : / Polycomb protein SUZ12-like, Zn domain / EZH2, SET domain / Polycomb protein, VEFS-Box / VEFS-Box of polycomb protein / Histone-lysine N-methyltransferase EZH1/EZH2 / Polycomb repressive complex 2 subunit EZH1/EZH2, tri-helical domain / Pre-SET CXC domain / : / WD repeat binding protein EZH2 / Polycomb repressive complex 2 tri-helical domain / CXC domain / Ezh2, MCSS domain / Tesmin/TSO1-like CXC domain / Tesmin/TSO1-like CXC domain / CXC domain / Histone-lysine N-methyltransferase EZH1/2-like / CXC domain profile. / Histone-binding protein RBBP4, N-terminal / Histone-binding protein RBBP4 or subunit C of CAF1 complex / : / : / Zinc finger, C5HC2-type / C5HC2 zinc finger / ARID DNA-binding domain / ARID DNA-binding domain superfamily / ARID/BRIGHT DNA binding domain / ARID domain profile. / BRIGHT, ARID (A/T-rich interaction domain) domain / ARID/BRIGHT DNA binding domain / JmjN domain / jmjN domain / JmjN domain profile. / Small domain found in the jumonji family of transcription factors / SET (Su(var)3-9, Enhancer-of-zeste, Trithorax) domain / JmjC domain, hydroxylase / SET domain / SET domain profile. / SET domain superfamily / SET domain / A domain family that is part of the cupin metalloenzyme superfamily. / JmjC domain / JmjC domain profile. / SANT SWI3, ADA2, N-CoR and TFIIIB'' DNA-binding domains / SANT/Myb domain / zinc finger / Zinc finger C2H2 type domain profile. / Zinc finger C2H2 superfamily / Zinc finger C2H2 type domain signature. / Zinc finger C2H2-type / WD domain, G-beta repeat / G-protein beta WD-40 repeat / WD40 repeat, conserved site / Trp-Asp (WD) repeats signature. / Trp-Asp (WD) repeats profile. / Trp-Asp (WD) repeats circular profile. / WD40 repeats / WD40 repeat / WD40-repeat-containing domain superfamily / WD40/YVTN repeat-like-containing domain superfamily
類似検索 - ドメイン・相同性
RNA / Polycomb protein EED / Histone-binding protein RBBP4 / Polycomb protein SUZ12 / Histone-lysine N-methyltransferase EZH2 / Zinc finger protein AEBP2 / Protein Jumonji
類似検索 - 構成要素
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: 3.4 Å
データ登録者Song, J.S. / Kasinath, V.K.
資金援助 米国, 2件
組織認可番号国
Howard Hughes Medical Institute (HHMI) 米国
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)R00GM132544 米国
引用ジャーナル: bioRxiv / 年: 2025
タイトル: RNA-induced PRC2 inhibition depends on the sequence of bound RNA.
著者: Jiarui Song / Liqi Yao / Anne R Gooding / Valentin Thron / Wayne O Hemphill / Karen Goodrich / Vignesh Kasinath / Thomas R Cech
要旨: Methyltransferase PRC2 (Polycomb Repressive Complex 2) deposits histone H3K27 trimethylation to establish and maintain epigenetic gene silencing. PRC2 is precisely regulated by accessory proteins, ...Methyltransferase PRC2 (Polycomb Repressive Complex 2) deposits histone H3K27 trimethylation to establish and maintain epigenetic gene silencing. PRC2 is precisely regulated by accessory proteins, histone post-translational modifications and, particularly, RNA. Research on PRC2-associated RNA has mostly focused on the tight-binding G-quadruplex (G4) RNAs, which inhibit PRC2 enzymatic activity in vitro and in cells, a mechanism explained by our recent cryo-EM structure showing G4 RNA-mediated PRC2 dimerization. However, PRC2 binds a wide variety of RNA sequences, and it remains unclear how diverse RNAs beyond G4 associate with and regulate PRC2. Here, we show that variations in RNA sequence elicit distinct effects on PRC2 function. A single-stranded G-rich RNA and an atypical G4 structure called a pUG-fold mediate PRC2 dimerization nearly identical to that induced by G4 RNA. In contrast, pyrimidine-rich RNAs, including a motif identified by CLIPseq in cells, do not induce PRC2 dimerization and instead bind PRC2 monomers with retention of methyltransferase activity. Only RNAs that dimerize PRC2 compete with nucleosome binding and inhibit PRC2 methyltransferase activity. CRISPR-dCas9 was adapted to localize different RNA elements onto a PRC2-targeted gene, revealing RNA sequence specificity for PRC2 regulation in cells. Thus, PRC2 binds many different RNAs with similar affinity, however, the functional effect on enzymatic activity depends entirely on the sequence of the bound RNA, a conclusion potentially applicable to any RNA- binding protein with a large transcriptome.
履歴
登録2024年8月26日登録サイト: RCSB / 処理サイト: RCSB
改定 1.02025年3月12日Provider: repository / タイプ: Initial release
改定 1.12025年10月15日Group: Data collection / Database references / カテゴリ: citation / citation_author / em_admin
Item: _citation.title / _citation.year / _em_admin.last_update

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構造の表示

構造ビューア分子:
MolmilJmol/JSmol

ダウンロードとリンク

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集合体

登録構造単位
G: TERRAmut RNA
A: Isoform 2 of Histone-lysine N-methyltransferase EZH2
B: Polycomb protein SUZ12
D: RBAP48
F: Zinc finger protein AEBP2
E: Protein Jumonji
C: Polycomb protein EED
H: Isoform 2 of Histone-lysine N-methyltransferase EZH2
I: Polycomb protein SUZ12
K: RBAP48
M: Zinc finger protein AEBP2
L: Protein Jumonji
J: Polycomb protein EED
ヘテロ分子


分子量 (理論値)分子数
合計 (水以外)674,67627
ポリマ－673,76013
非ポリマー91614
水00
1


  • 登録構造と同一
  • 登録者が定義した集合体
  • 根拠: 電子顕微鏡法, not applicable
タイプ名称対称操作数
identity operation1_5551

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要素

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タンパク質 , 4種, 8分子 AHDKFMEL

#2: タンパク質 Isoform 2 of Histone-lysine N-methyltransferase EZH2 / ENX-1 / Enhancer of zeste homolog 2 / Lysine N-methyltransferase 6


分子量: 86017.859 Da / 分子数: 2 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: EZH2, KMT6 / 発現宿主: Trichoplusia ni (イラクサキンウワバ)
参照: UniProt: Q15910, [histone H3]-lysine27 N-trimethyltransferase
#4: タンパク質 RBAP48 / Chromatin assembly factor 1 subunit C / CAF-1 subunit C / Chromatin assembly factor I p48 subunit / ...Chromatin assembly factor 1 subunit C / CAF-1 subunit C / Chromatin assembly factor I p48 subunit / CAF-I 48 kDa subunit / CAF-I p48 / Nucleosome-remodeling factor subunit RBAP48 / Retinoblastoma-binding protein 4 / RBBP-4 / Retinoblastoma-binding protein p48


分子量: 47709.527 Da / 分子数: 2 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: RBBP4, RBAP48 / 発現宿主: Trichoplusia ni (イラクサキンウワバ) / 参照: UniProt: Q09028
#5: タンパク質 Zinc finger protein AEBP2 / Adipocyte enhancer-binding protein 2 / AE-binding protein 2


分子量: 32881.473 Da / 分子数: 2 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: AEBP2 / 発現宿主: Trichoplusia ni (イラクサキンウワバ) / 参照: UniProt: Q6ZN18
#6: タンパク質 Protein Jumonji / Jumonji/ARID domain-containing protein 2


分子量: 36021.391 Da / 分子数: 2 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: JARID2, JMJ / 発現宿主: Trichoplusia ni (イラクサキンウワバ) / 参照: UniProt: Q92833

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Polycomb protein ... , 2種, 4分子 BICJ

#3: タンパク質 Polycomb protein SUZ12 / Chromatin precipitated E2F target 9 protein / ChET 9 protein / Joined to JAZF1 protein / Suppressor ...Chromatin precipitated E2F target 9 protein / ChET 9 protein / Joined to JAZF1 protein / Suppressor of zeste 12 protein homolog


分子量: 82353.133 Da / 分子数: 2 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: SUZ12, CHET9, JJAZ1, KIAA0160 / 発現宿主: Trichoplusia ni (イラクサキンウワバ) / 参照: UniProt: Q15022
#7: タンパク質 Polycomb protein EED / hEED / Embryonic ectoderm development protein / WD protein associating with integrin cytoplasmic ...hEED / Embryonic ectoderm development protein / WD protein associating with integrin cytoplasmic tails 1 / WAIT-1


分子量: 50267.691 Da / 分子数: 2 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: EED / 発現宿主: Trichoplusia ni (イラクサキンウワバ) / 参照: UniProt: O75530

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RNA鎖 / 非ポリマー , 2種, 15分子 G

#1: RNA鎖 TERRAmut RNA


分子量: 3257.980 Da / 分子数: 1 / 由来タイプ: 合成 / 由来: (合成) Homo sapiens (ヒト)
#8: 化合物
ChemComp-ZN / ZINC ION


分子量: 65.409 Da / 分子数: 14 / 由来タイプ: 合成 / 式: Zn

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詳細

研究の焦点であるリガンドがあるかN
Has protein modificationY

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実験情報

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実験

実験手法: 電子顕微鏡法
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
ID名称タイプEntity IDParent-ID由来
1Single-stranded RNA-mediated dimer of Polycomb Repressive Complex 2COMPLEX#1-#70MULTIPLE SOURCES
2dimer of Polycomb Repressive Complex 2COMPLEX#2-#71RECOMBINANT
3TERRAmut RNACOMPLEX#11SYNTHETIC
由来(天然)
IDEntity assembly-ID生物種Ncbi tax-ID
22Homo sapiens (ヒト)9606
33Homo sapiens (ヒト)9606
由来(組換発現)生物種: Trichoplusia ni (イラクサキンウワバ) / 株: BTI-Tn-5B1-4
緩衝液pH: 7.9
詳細: RNP complex buffer (25 mM HEPES pH 7.9, 50 mM KCl, 2 mM MgCl2, 10% glycerol, and 1 mM TCEP) EM preparation buffer I (25 mM HEPES pH 7.9, 50 mM KCl, 2.5% glycerol, and 1 mM TCEP) EM ...詳細: RNP complex buffer (25 mM HEPES pH 7.9, 50 mM KCl, 2 mM MgCl2, 10% glycerol, and 1 mM TCEP) EM preparation buffer I (25 mM HEPES pH 7.9, 50 mM KCl, 2.5% glycerol, and 1 mM TCEP) EM preparation buffer II (25 mM HEPES pH 7.9, 50 mM KCl, 2.5% glycerol, 0.01%NP-40, and 1 mM TCEP).
試料包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES
詳細: We used streptavidin-affinity grid preparation method with biotin-labeled RNA at 100 nM concentration. PRC2 was applied in excess at 600 nM.
急速凍結装置: LEICA EM GP / 凍結剤: ETHANE / 湿度: 90 % / 凍結前の試料温度: 281 K / 詳細: 2-3s of single side blotting

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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
顕微鏡モデル: FEI TITAN 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 / 倍率（補正後）: 130000 X / 最大 デフォーカス（公称値）: 1900 nm / 最小 デフォーカス（公称値）: 500 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
撮影電子線照射量: 50 e/Å2
フィルム・検出器のモデル: FEI FALCON IV (4k x 4k)
撮影したグリッド数: 2 / 実像数: 14230
詳細: Cryo-EM data was collected using a Titan Krios G3i equipped with a Thermo Fisher Falcon 4 direct-electron detector (DED) camera and a Selectris energy filter set with a 10-eV slit width. Data ...詳細: Cryo-EM data was collected using a Titan Krios G3i equipped with a Thermo Fisher Falcon 4 direct-electron detector (DED) camera and a Selectris energy filter set with a 10-eV slit width. Data acquisition was performed using Thermo Fisher EPU at 130,000x magnification (0.97 A/pixel) with a defocus range of minus 1.9 to minus 0.5 micrometer. Movies were collected in EER format with a total dose of 50 electrons per square angstrom and an exposure time of 5.49 s corresponding to 1323 frames.
電子光学装置エネルギーフィルター名称: TFS Selectris X / エネルギーフィルタースリット幅: 10 eV

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解析

EMソフトウェア
ID名称バージョンカテゴリ
1RELION5粒子像選択
2EPU画像取得
4RELION5CTF補正
7Cootモデルフィッティング
9RELION5初期オイラー角割当
10RELION5最終オイラー角割当
11RELION5分類
12RELION5３次元再構成
13PHENIXモデル精密化
画像処理詳細: Gain correction was applied during motion correction using Relion own implementation of the UCSF motioncor2 program
CTF補正詳細: CTFind / タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION
粒子像の選択選択した粒子像数: 3385491 / 詳細: TOPAZ auto picking
3次元再構成解像度: 3.4 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 120658 / 対称性のタイプ: POINT
原子モデル構築詳細: Individual PRC2 protomers were built using cryo-EM maps from the multibody refinement. The coordinates of G-quadruplex RNA-bound PRC2 six-subunit complex (PDB: 8FYH) provided a starting model ...詳細: Individual PRC2 protomers were built using cryo-EM maps from the multibody refinement. The coordinates of G-quadruplex RNA-bound PRC2 six-subunit complex (PDB: 8FYH) provided a starting model from which all the coordinates were adjusted and rebuilt in the new map using COOT. The model of each PRC2 promoter was subjected to global refinement and minimization in real space using PHENIX. These were then subjected to manual inspection and adjustment in COOT, followed by refinement again in PHENIX. TERRAmut RNA model was generated using a 10-nucleotide single-stranded fragment (UGAGUGUGAG) using AlphaFold3 and then docked into our map for the position we designated as the RNA density.
原子モデル構築PDB-ID: 8FYH

8fyh


Accession code: 8FYH / Source name: PDB / タイプ: experimental model

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