+データを開く
-基本情報
登録情報 | データベース: EMDB / ID: EMD-0768 | |||||||||||||||||||||
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タイトル | H3-CENP-A-H3 tri-nucleosome with the 22 base-pair linker DNA | |||||||||||||||||||||
マップデータ | H3-CENP-A-H3 tri-nucleosome with the 22 base-pair linker DNA | |||||||||||||||||||||
試料 |
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機能・相同性 | 機能・相同性情報 CENP-A containing chromatin assembly / protein localization to chromosome, centromeric region / kinetochore assembly / condensed chromosome, centromeric region / establishment of mitotic spindle orientation / mitotic cytokinesis / chromosome, centromeric region / negative regulation of tumor necrosis factor-mediated signaling pathway / negative regulation of megakaryocyte differentiation / protein localization to CENP-A containing chromatin ...CENP-A containing chromatin assembly / protein localization to chromosome, centromeric region / kinetochore assembly / condensed chromosome, centromeric region / establishment of mitotic spindle orientation / mitotic cytokinesis / chromosome, centromeric region / negative regulation of tumor necrosis factor-mediated signaling pathway / negative regulation of megakaryocyte differentiation / protein localization to CENP-A containing chromatin / Amplification of signal from unattached kinetochores via a MAD2 inhibitory signal / pericentric heterochromatin / Chromatin modifying enzymes / Replacement of protamines by nucleosomes in the male pronucleus / CENP-A containing nucleosome / epigenetic regulation of gene expression / Packaging Of Telomere Ends / Mitotic Prometaphase / EML4 and NUDC in mitotic spindle formation / Recognition and association of DNA glycosylase with site containing an affected purine / Cleavage of the damaged purine / Deposition of new CENPA-containing nucleosomes at the centromere / Resolution of Sister Chromatid Cohesion / Recognition and association of DNA glycosylase with site containing an affected pyrimidine / Cleavage of the damaged pyrimidine / Inhibition of DNA recombination at telomere / Meiotic synapsis / telomere organization / RNA Polymerase I Promoter Opening / Interleukin-7 signaling / Assembly of the ORC complex at the origin of replication / SUMOylation of chromatin organization proteins / DNAメチル化 / Condensation of Prophase Chromosomes / ERCC6 (CSB) and EHMT2 (G9a) positively regulate rRNA expression / Chromatin modifications during the maternal to zygotic transition (MZT) / SIRT1 negatively regulates rRNA expression / HCMV Late Events / innate immune response in mucosa / PRC2 methylates histones and DNA / Defective pyroptosis / RHO GTPases Activate Formins / HDACs deacetylate histones / RNA Polymerase I Promoter Escape / lipopolysaccharide binding / Nonhomologous End-Joining (NHEJ) / Transcriptional regulation by small RNAs / Formation of the beta-catenin:TCF transactivating complex / RUNX1 regulates genes involved in megakaryocyte differentiation and platelet function / Activated PKN1 stimulates transcription of AR (androgen receptor) regulated genes KLK2 and KLK3 / NoRC negatively regulates rRNA expression / B-WICH complex positively regulates rRNA expression / G2/M DNA damage checkpoint / HDMs demethylate histones / DNA Damage/Telomere Stress Induced Senescence / Metalloprotease DUBs / PKMTs methylate histone lysines / RMTs methylate histone arginines / 遺伝的組換え / Pre-NOTCH Transcription and Translation / nucleosome assembly / Activation of anterior HOX genes in hindbrain development during early embryogenesis / HCMV Early Events / Transcriptional regulation of granulopoiesis / structural constituent of chromatin / Separation of Sister Chromatids / UCH proteinases / ヌクレオソーム / antimicrobial humoral immune response mediated by antimicrobial peptide / E3 ubiquitin ligases ubiquitinate target proteins / Recruitment and ATM-mediated phosphorylation of repair and signaling proteins at DNA double strand breaks / RUNX1 regulates transcription of genes involved in differentiation of HSCs / 遺伝子発現 / chromatin organization / Factors involved in megakaryocyte development and platelet production / Processing of DNA double-strand break ends / HATs acetylate histones / antibacterial humoral response / Senescence-Associated Secretory Phenotype (SASP) / Oxidative Stress Induced Senescence / killing of cells of another organism / Estrogen-dependent gene expression / defense response to Gram-negative bacterium / chromosome, telomeric region / Ub-specific processing proteases / defense response to Gram-positive bacterium / cadherin binding / protein heterodimerization activity / Amyloid fiber formation / negative regulation of cell population proliferation / chromatin binding / protein-containing complex / DNA binding / extracellular space / RNA binding / extracellular exosome / extracellular region / 核質 / 生体膜 / 細胞核 類似検索 - 分子機能 | |||||||||||||||||||||
生物種 | Homo sapiens (ヒト) | |||||||||||||||||||||
手法 | 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度: 18.7 Å | |||||||||||||||||||||
データ登録者 | Takizawa Y / Ho C-H / Tachiwana H / Ohi M / Wolf M / Kurumizaka H | |||||||||||||||||||||
資金援助 | 日本, 6件
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引用 | ジャーナル: Structure / 年: 2020 タイトル: Cryo-EM Structures of Centromeric Tri-nucleosomes Containing a Central CENP-A Nucleosome. 著者: Yoshimasa Takizawa / Cheng-Han Ho / Hiroaki Tachiwana / Hideyuki Matsunami / Wataru Kobayashi / Midori Suzuki / Yasuhiro Arimura / Tetsuya Hori / Tatsuo Fukagawa / Melanie D Ohi / Matthias ...著者: Yoshimasa Takizawa / Cheng-Han Ho / Hiroaki Tachiwana / Hideyuki Matsunami / Wataru Kobayashi / Midori Suzuki / Yasuhiro Arimura / Tetsuya Hori / Tatsuo Fukagawa / Melanie D Ohi / Matthias Wolf / Hitoshi Kurumizaka / 要旨: The histone H3 variant CENP-A is a crucial epigenetic marker for centromere specification. CENP-A forms a characteristic nucleosome and dictates the higher-order configuration of centromeric ...The histone H3 variant CENP-A is a crucial epigenetic marker for centromere specification. CENP-A forms a characteristic nucleosome and dictates the higher-order configuration of centromeric chromatin. However, little is known about how the CENP-A nucleosome affects the architecture of centromeric chromatin. In this study, we reconstituted tri-nucleosomes mimicking a centromeric nucleosome arrangement containing the CENP-A nucleosome, and determined their 3D structures by cryoelectron microscopy. The H3-CENP-A-H3 tri-nucleosomes adopt an untwisted architecture, with an outward-facing linker DNA path between nucleosomes. This is distinct from the H3-H3-H3 tri-nucleosome architecture, with an inward-facing DNA path. Intriguingly, the untwisted architecture may allow the CENP-A nucleosome to be exposed to the solvent in the condensed chromatin model. These results provide a structural basis for understanding the 3D configuration of CENP-A-containing chromatin, and may explain how centromeric proteins can specifically target the CENP-A nucleosomes buried in robust amounts of H3 nucleosomes in centromeres. | |||||||||||||||||||||
履歴 |
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-構造の表示
ムービー |
ムービービューア |
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構造ビューア | EMマップ: SurfViewMolmilJmol/JSmol |
添付画像 |
-ダウンロードとリンク
-EMDBアーカイブ
マップデータ | emd_0768.map.gz | 13.4 MB | EMDBマップデータ形式 | |
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ヘッダ (付随情報) | emd-0768-v30.xml emd-0768.xml | 12.7 KB 12.7 KB | 表示 表示 | EMDBヘッダ |
FSC (解像度算出) | emd_0768_fsc.xml | 10.1 KB | 表示 | FSCデータファイル |
画像 | emd_0768.png | 52.9 KB | ||
アーカイブディレクトリ | http://ftp.pdbj.org/pub/emdb/structures/EMD-0768 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-0768 | HTTPS FTP |
-関連構造データ
-リンク
EMDBのページ | EMDB (EBI/PDBe) / EMDataResource |
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「今月の分子」の関連する項目 |
-マップ
ファイル | ダウンロード / ファイル: emd_0768.map.gz / 形式: CCP4 / 大きさ: 83.7 MB / タイプ: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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注釈 | H3-CENP-A-H3 tri-nucleosome with the 22 base-pair linker DNA | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
ボクセルのサイズ | X=Y=Z: 1.4 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
密度 |
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対称性 | 空間群: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
詳細 | EMDB XML:
CCP4マップ ヘッダ情報:
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-添付データ
-試料の構成要素
-全体 : H3-CENP-A-H3 tri-nucleosome with the 22 base-pair linker DNA
全体 | 名称: H3-CENP-A-H3 tri-nucleosome with the 22 base-pair linker DNA |
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要素 |
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-超分子 #1: H3-CENP-A-H3 tri-nucleosome with the 22 base-pair linker DNA
超分子 | 名称: H3-CENP-A-H3 tri-nucleosome with the 22 base-pair linker DNA タイプ: complex / ID: 1 / 親要素: 0 |
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由来(天然) | 生物種: Homo sapiens (ヒト) |
組換発現 | 生物種: Escherichia coli (大腸菌) |
分子量 | 理論値: 600 KDa |
-実験情報
-構造解析
手法 | クライオ電子顕微鏡法 |
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解析 | 単粒子再構成法 |
試料の集合状態 | particle |
-試料調製
濃度 | 0.03 mg/mL |
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緩衝液 | pH: 7.8 |
グリッド | モデル: C-flat-2/1 / 材質: COPPER / メッシュ: 400 / 支持フィルム - 材質: CARBON / 支持フィルム - トポロジー: HOLEY ARRAY / 前処理 - タイプ: GLOW DISCHARGE |
凍結 | 凍結剤: ETHANE / チャンバー内湿度: 100 % / 装置: FEI VITROBOT MARK IV |
-電子顕微鏡法
顕微鏡 | FEI TALOS ARCTICA |
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電子線 | 加速電圧: 200 kV / 電子線源: FIELD EMISSION GUN |
電子光学系 | C2レンズ絞り径: 50.0 µm / 照射モード: FLOOD BEAM / 撮影モード: BRIGHT FIELDBright-field microscopy / Cs: 2.7 mm |
試料ステージ | 試料ホルダーモデル: FEI TITAN KRIOS AUTOGRID HOLDER ホルダー冷却材: NITROGEN |
撮影 | フィルム・検出器のモデル: FEI FALCON II (4k x 4k) 検出モード: INTEGRATING / 撮影したグリッド数: 1 / 実像数: 4515 / 平均露光時間: 1.0 sec. / 平均電子線量: 25.0 e/Å2 |
実験機器 | モデル: Talos Arctica / 画像提供: FEI Company |
-画像解析
-原子モデル構築 1
精密化 | プロトコル: RIGID BODY FIT |
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得られたモデル | PDB-6l49: |