+データを開く
-基本情報
登録情報 | データベース: EMDB / ID: EMD-16842 | |||||||||
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タイトル | SIRT6 bound nucleosome | |||||||||
マップデータ | Sharpened map | |||||||||
試料 |
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キーワード | Transferase / Deacetylase / Histone H3 deacetylation / GENE REGULATION | |||||||||
機能・相同性 | 機能・相同性情報 histone H3K56 deacetylase activity, NAD-dependent / histone H3K18 deacetylase activity, NAD-dependent / histone H3K9 deacetylase activity, NAD-dependent / protein delipidation / NAD+-protein-lysine ADP-ribosyltransferase activity / regulation of lipid catabolic process / ketone biosynthetic process / chromosome, subtelomeric region / NAD-dependent protein demyristoylase activity / NAD-dependent protein depalmitoylase activity ...histone H3K56 deacetylase activity, NAD-dependent / histone H3K18 deacetylase activity, NAD-dependent / histone H3K9 deacetylase activity, NAD-dependent / protein delipidation / NAD+-protein-lysine ADP-ribosyltransferase activity / regulation of lipid catabolic process / ketone biosynthetic process / chromosome, subtelomeric region / NAD-dependent protein demyristoylase activity / NAD-dependent protein depalmitoylase activity / NAD+-protein-arginine ADP-ribosyltransferase activity / positive regulation of protein localization to chromatin / DNA damage sensor activity / positive regulation of stem cell differentiation / positive regulation of blood vessel branching / NAD-dependent protein lysine deacetylase activity / transposable element silencing / positive regulation of chondrocyte proliferation / cardiac muscle cell differentiation / protein acetyllysine N-acetyltransferase / positive regulation of telomere maintenance / pericentric heterochromatin formation / histone deacetylase activity, NAD-dependent / protein deacetylation / negative regulation of D-glucose import / protein localization to site of double-strand break / TORC2 complex binding / negative regulation of glycolytic process / negative regulation of protein localization to chromatin / positive regulation of vascular endothelial cell proliferation / DNA repair-dependent chromatin remodeling / positive regulation of double-strand break repair / lncRNA binding / negative regulation of protein import into nucleus / regulation of double-strand break repair via homologous recombination / negative regulation of gene expression, epigenetic / positive regulation of stem cell population maintenance / regulation of protein secretion / positive regulation of stem cell proliferation / negative regulation of transcription elongation by RNA polymerase II / NAD+-protein ADP-ribosyltransferase activity / negative regulation of cellular senescence / site of DNA damage / regulation of lipid metabolic process / NAD+-protein poly-ADP-ribosyltransferase activity / 転移酵素; グリコシル基を移すもの; 五炭糖残基を移すもの / nucleosome binding / NAD+ binding / subtelomeric heterochromatin formation / positive regulation of fat cell differentiation / regulation of protein localization to plasma membrane / negative regulation of gluconeogenesis / pericentric heterochromatin / response to UV / 転移酵素; アシル基を移すもの; アミノアシル基以外のアシル基を移すもの / nucleotidyltransferase activity / positive regulation of protein export from nucleus / determination of adult lifespan / protein destabilization / circadian regulation of gene expression / regulation of circadian rhythm / base-excision repair / positive regulation of insulin secretion / chromatin DNA binding / Pre-NOTCH Transcription and Translation / structural constituent of chromatin / transcription corepressor activity / positive regulation of fibroblast proliferation / nucleosome / double-strand break repair / positive regulation of proteasomal ubiquitin-dependent protein catabolic process / nucleosome assembly / positive regulation of cold-induced thermogenesis / glucose homeostasis / site of double-strand break / Processing of DNA double-strand break ends / damaged DNA binding / chromatin remodeling / protein heterodimerization activity / negative regulation of cell population proliferation / intracellular membrane-bounded organelle / chromatin binding / chromatin / negative regulation of transcription by RNA polymerase II / endoplasmic reticulum / protein homodimerization activity / DNA binding / zinc ion binding / nucleoplasm / nucleus 類似検索 - 分子機能 | |||||||||
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: 2.94 Å | |||||||||
データ登録者 | Smirnova E / Bignon E / Schultz P / Papai G / Ben-Shem A | |||||||||
資金援助 | フランス, 1件
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引用 | ジャーナル: Elife / 年: 2024 タイトル: Binding to nucleosome poises human SIRT6 for histone H3 deacetylation. 著者: Ekaterina Smirnova / Emmanuelle Bignon / Patrick Schultz / Gabor Papai / Adam Ben Shem / 要旨: Sirtuin 6 (SIRT6) is an NAD-dependent histone H3 deacetylase that is prominently found associated with chromatin, attenuates transcriptionally active promoters and regulates DNA repair, metabolic ...Sirtuin 6 (SIRT6) is an NAD-dependent histone H3 deacetylase that is prominently found associated with chromatin, attenuates transcriptionally active promoters and regulates DNA repair, metabolic homeostasis and lifespan. Unlike other sirtuins, it has low affinity to free histone tails but demonstrates strong binding to nucleosomes. It is poorly understood how SIRT6 docking on nucleosomes stimulates its histone deacetylation activity. Here, we present the structure of human SIRT6 bound to a nucleosome determined by cryogenic electron microscopy. The zinc finger domain of SIRT6 associates tightly with the acidic patch of the nucleosome through multiple arginine anchors. The Rossmann fold domain binds to the terminus of the looser DNA half of the nucleosome, detaching two turns of the DNA from the histone octamer and placing the NAD binding pocket close to the DNA exit site. This domain shows flexibility with respect to the fixed zinc finger and moves with, but also relative to, the unwrapped DNA terminus. We apply molecular dynamics simulations of the histone tails in the nucleosome to show that in this mode of interaction, the active site of SIRT6 is perfectly poised to catalyze deacetylation of the H3 histone tail and that the partial unwrapping of the DNA allows even lysines close to the H3 core to reach the enzyme. #1: ジャーナル: Elife / 年: 2023 タイトル: Binding to nucleosome poises SIRT6 for histone H3 de-acetylation 著者: Smirnova E / Bignon E / Schultz P / Papai G / Ben-Shem A | |||||||||
履歴 |
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-構造の表示
添付画像 |
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-ダウンロードとリンク
-EMDBアーカイブ
マップデータ | emd_16842.map.gz | 38.7 MB | EMDBマップデータ形式 | |
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ヘッダ (付随情報) | emd-16842-v30.xml emd-16842.xml | 23.2 KB 23.2 KB | 表示 表示 | EMDBヘッダ |
FSC (解像度算出) | emd_16842_fsc.xml | 7.4 KB | 表示 | FSCデータファイル |
画像 | emd_16842.png | 95.5 KB | ||
マスクデータ | emd_16842_msk_1.map | 42.9 MB | マスクマップ | |
Filedesc metadata | emd-16842.cif.gz | 5.9 KB | ||
その他 | emd_16842_half_map_1.map.gz emd_16842_half_map_2.map.gz | 39.8 MB 39.8 MB | ||
アーカイブディレクトリ | http://ftp.pdbj.org/pub/emdb/structures/EMD-16842 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-16842 | HTTPS FTP |
-検証レポート
文書・要旨 | emd_16842_validation.pdf.gz | 779.6 KB | 表示 | EMDB検証レポート |
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文書・詳細版 | emd_16842_full_validation.pdf.gz | 779.2 KB | 表示 | |
XML形式データ | emd_16842_validation.xml.gz | 15.2 KB | 表示 | |
CIF形式データ | emd_16842_validation.cif.gz | 19.5 KB | 表示 | |
アーカイブディレクトリ | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-16842 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-16842 | 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_16842.map.gz / 形式: CCP4 / 大きさ: 42.9 MB / タイプ: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||
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注釈 | Sharpened map | ||||||||||||||||||||||||||||||||||||
投影像・断面図 | 画像のコントロール
画像は Spider により作成 | ||||||||||||||||||||||||||||||||||||
ボクセルのサイズ | X=Y=Z: 0.916 Å | ||||||||||||||||||||||||||||||||||||
密度 |
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対称性 | 空間群: 1 | ||||||||||||||||||||||||||||||||||||
詳細 | EMDB XML:
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-添付データ
-マスク #1
ファイル | emd_16842_msk_1.map | ||||||||||||
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投影像・断面図 |
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密度ヒストグラム |
-ハーフマップ: Half map A
ファイル | emd_16842_half_map_1.map | ||||||||||||
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注釈 | Half map A | ||||||||||||
投影像・断面図 |
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密度ヒストグラム |
-ハーフマップ: Half map B
ファイル | emd_16842_half_map_2.map | ||||||||||||
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注釈 | Half map B | ||||||||||||
投影像・断面図 |
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密度ヒストグラム |
-試料の構成要素
+全体 : Human Sirtuin 6 in complex with the nucleosome
+超分子 #1: Human Sirtuin 6 in complex with the nucleosome
+超分子 #2: Human NAD-dependent protein deacylase sirtuin-6
+超分子 #3: Histones
+超分子 #4: DNA
+分子 #1: Human NAD-dependent protein deacylase sirtuin-6
+分子 #2: Histone H2A
+分子 #3: Histone H2B
+分子 #4: Histone H3
+分子 #5: Histone H4
+分子 #6: DNA (145-MER)
+分子 #7: DNA (145-MER)
-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
緩衝液 | pH: 7.5 |
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グリッド | モデル: Quantifoil R3.5/1 / 材質: COPPER/RHODIUM / メッシュ: 300 / 支持フィルム - 材質: CARBON / 支持フィルム - トポロジー: CONTINUOUS / 支持フィルム - Film thickness: 2 / 前処理 - タイプ: PLASMA CLEANING / 前処理 - 時間: 90 sec. |
凍結 | 凍結剤: ETHANE |
-電子顕微鏡法
顕微鏡 | TFS KRIOS |
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特殊光学系 | 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 |
撮影 | フィルム・検出器のモデル: FEI FALCON IV (4k x 4k) 平均電子線量: 50.0 e/Å2 |
電子線 | 加速電圧: 300 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 FIELD / Cs: 2.7 mm / 最大 デフォーカス(公称値): 2.6 µm / 最小 デフォーカス(公称値): 1.2 µm / 倍率(公称値): 270000 |
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 |
実験機器 | モデル: Titan Krios / 画像提供: FEI Company |