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基本情報
登録情報 | データベース: PDB / ID: 6z2j | ||||||||||||
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タイトル | The structure of the dimeric HDAC1/MIDEAS/DNTTIP1 MiDAC deacetylase complex | ||||||||||||
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![]() | GENE REGULATION / HDAC1 MIDEAS ELMSAN1 DNTTIP1 TDIF1 histone deacetylase MiDAC | ||||||||||||
機能・相同性 | ![]() Loss of MECP2 binding ability to 5mC-DNA / Krueppel-associated box domain binding / Repression of WNT target genes / MECP2 regulates transcription of neuronal ligands / p75NTR negatively regulates cell cycle via SC1 / epidermal cell differentiation / histone decrotonylase activity / fungiform papilla formation / negative regulation of androgen receptor signaling pathway / regulation of cell fate specification ...Loss of MECP2 binding ability to 5mC-DNA / Krueppel-associated box domain binding / Repression of WNT target genes / MECP2 regulates transcription of neuronal ligands / p75NTR negatively regulates cell cycle via SC1 / epidermal cell differentiation / histone decrotonylase activity / fungiform papilla formation / negative regulation of androgen receptor signaling pathway / regulation of cell fate specification / negative regulation of stem cell population maintenance / endoderm development / Transcription of E2F targets under negative control by p107 (RBL1) and p130 (RBL2) in complex with HDAC1 / regulation of stem cell differentiation / NuRD complex / DNA methylation-dependent heterochromatin formation / protein deacetylation / Transcription of E2F targets under negative control by DREAM complex / STAT3 nuclear events downstream of ALK signaling / histone deacetylase / protein lysine deacetylase activity / positive regulation of signaling receptor activity / 加水分解酵素; ペプチド以外のCN結合加水分解酵素; 鎖状アミドに作用 / embryonic digit morphogenesis / negative regulation of gene expression, epigenetic / positive regulation of oligodendrocyte differentiation / histone deacetylase activity / Sin3-type complex / positive regulation of stem cell population maintenance / G1/S-Specific Transcription / cellular response to platelet-derived growth factor stimulus / Notch-HLH transcription pathway / eyelid development in camera-type eye / oligodendrocyte differentiation / E-box binding / odontogenesis of dentin-containing tooth / RNA Polymerase I Transcription Initiation / histone deacetylase complex / hair follicle placode formation / Regulation of MECP2 expression and activity / G0 and Early G1 / NF-kappaB binding / negative regulation by host of viral transcription / RNA polymerase II core promoter sequence-specific DNA binding / FOXO-mediated transcription of oxidative stress, metabolic and neuronal genes / heterochromatin / Nuclear events stimulated by ALK signaling in cancer / MECP2 regulates neuronal receptors and channels / core promoter sequence-specific DNA binding / negative regulation of intrinsic apoptotic signaling pathway / negative regulation of canonical NF-kappaB signal transduction / nucleosome binding / Regulation of TP53 Activity through Acetylation / transcription repressor complex / SUMOylation of chromatin organization proteins / negative regulation of cell migration / transcription corepressor binding / ERCC6 (CSB) and EHMT2 (G9a) positively regulate rRNA expression / Regulation of PTEN gene transcription / HDACs deacetylate histones / Deactivation of the beta-catenin transactivating complex / hippocampus development / promoter-specific chromatin binding / Downregulation of SMAD2/3:SMAD4 transcriptional activity / SMAD2/SMAD3:SMAD4 heterotrimer regulates transcription / positive regulation of smooth muscle cell proliferation / Formation of the beta-catenin:TCF transactivating complex / negative regulation of transforming growth factor beta receptor signaling pathway / circadian regulation of gene expression / RUNX1 regulates genes involved in megakaryocyte differentiation and platelet function / NoRC negatively regulates rRNA expression / negative regulation of canonical Wnt signaling pathway / neuron differentiation / NOTCH1 Intracellular Domain Regulates Transcription / Constitutive Signaling by NOTCH1 PEST Domain Mutants / Constitutive Signaling by NOTCH1 HD+PEST Domain Mutants / histone deacetylase binding / transcription corepressor activity / p53 binding / chromatin organization / chromosome / Factors involved in megakaryocyte development and platelet production / DNA-binding transcription factor binding / Estrogen-dependent gene expression / RNA polymerase II-specific DNA-binding transcription factor binding / transcription regulator complex / Potential therapeutics for SARS / chromatin remodeling / RNA polymerase II cis-regulatory region sequence-specific DNA binding / negative regulation of gene expression / negative regulation of DNA-templated transcription / neuronal cell body / positive regulation of cell population proliferation / positive regulation of gene expression / chromatin / nucleolus / regulation of transcription by RNA polymerase II / negative regulation of apoptotic process / positive regulation of DNA-templated transcription / enzyme binding 類似検索 - 分子機能 | ||||||||||||
生物種 | ![]() | ||||||||||||
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: 4 Å | ||||||||||||
![]() | Fairall, L. / Saleh, A. / Ragan, T.J. / Millard, C.J. / Savva, C.G. / Schwabe, J.W.R. | ||||||||||||
資金援助 | ![]()
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![]() | ![]() タイトル: The MiDAC histone deacetylase complex is essential for embryonic development and has a unique multivalent structure. 著者: Robert E Turnbull / Louise Fairall / Almutasem Saleh / Emma Kelsall / Kyle L Morris / T J Ragan / Christos G Savva / Aditya Chandru / Christopher J Millard / Olga V Makarova / Corinne J Smith ...著者: Robert E Turnbull / Louise Fairall / Almutasem Saleh / Emma Kelsall / Kyle L Morris / T J Ragan / Christos G Savva / Aditya Chandru / Christopher J Millard / Olga V Makarova / Corinne J Smith / Alan M Roseman / Andrew M Fry / Shaun M Cowley / John W R Schwabe / ![]() 要旨: MiDAC is one of seven distinct, large multi-protein complexes that recruit class I histone deacetylases to the genome to regulate gene expression. Despite implications of involvement in cell cycle ...MiDAC is one of seven distinct, large multi-protein complexes that recruit class I histone deacetylases to the genome to regulate gene expression. Despite implications of involvement in cell cycle regulation and in several cancers, surprisingly little is known about the function or structure of MiDAC. Here we show that MiDAC is important for chromosome alignment during mitosis in cancer cell lines. Mice lacking the MiDAC proteins, DNTTIP1 or MIDEAS, die with identical phenotypes during late embryogenesis due to perturbations in gene expression that result in heart malformation and haematopoietic failure. This suggests that MiDAC has an essential and unique function that cannot be compensated by other HDAC complexes. Consistent with this, the cryoEM structure of MiDAC reveals a unique and distinctive mode of assembly. Four copies of HDAC1 are positioned at the periphery with outward-facing active sites suggesting that the complex may target multiple nucleosomes implying a processive deacetylase function. #1: ![]() タイトル: Structural and functional characterization of a cell cycle associated HDAC1/2 complex reveals the structural basis for complex assembly and nucleosome targeting. 著者: Toshimasa Itoh / Louise Fairall / Frederick W Muskett / Charles P Milano / Peter J Watson / Nadia Arnaudo / Almutasem Saleh / Christopher J Millard / Mohammed El-Mezgueldi / Fabrizio Martino / John W R Schwabe / ![]() 要旨: Recent proteomic studies have identified a novel histone deacetylase complex that is upregulated during mitosis and is associated with cyclin A. This complex is conserved from nematodes to man and ...Recent proteomic studies have identified a novel histone deacetylase complex that is upregulated during mitosis and is associated with cyclin A. This complex is conserved from nematodes to man and contains histone deacetylases 1 and 2, the MIDEAS corepressor protein and a protein called DNTTIP1 whose function was hitherto poorly understood. Here, we report the structures of two domains from DNTTIP1. The amino-terminal region forms a tight dimerization domain with a novel structural fold that interacts with and mediates assembly of the HDAC1:MIDEAS complex. The carboxy-terminal domain of DNTTIP1 has a structure related to the SKI/SNO/DAC domain, despite lacking obvious sequence homology. We show that this domain in DNTTIP1 mediates interaction with both DNA and nucleosomes. Thus, DNTTIP1 acts as a dimeric chromatin binding module in the HDAC1:MIDEAS corepressor complex. | ||||||||||||
履歴 |
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構造の表示
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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 | ![]() | 405.6 KB | 表示 | ![]() |
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PDB形式 | ![]() | 332.6 KB | 表示 | ![]() |
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-検証レポート
文書・要旨 | ![]() | 1.2 MB | 表示 | ![]() |
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文書・詳細版 | ![]() | 1.2 MB | 表示 | |
XML形式データ | ![]() | 45 KB | 表示 | |
CIF形式データ | ![]() | 65.1 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 , 3種, 6分子 CEABFD
#1: タンパク質 | 分子量: 55178.906 Da / 分子数: 2 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() #2: タンパク質 | 分子量: 14381.293 Da / 分子数: 2 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() #3: タンパク質 | 分子量: 19794.771 Da / 分子数: 2 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() |
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-非ポリマー , 3種, 8分子 ![](data/chem/img/IHP.gif)
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#4: 化合物 | #5: 化合物 | #6: 化合物 | ChemComp-K / |
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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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-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 | 名称: Dimeric complex of the MiDAC deacetylase complex containing HDAC1, the ELM2-SANT domain of MIDEAS and the dimerisation domain of DNTTIP1 タイプ: COMPLEX / Entity ID: #1-#3 / 由来: RECOMBINANT | ||||||||||||||||||||||||
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分子量 | 値: 0.178 MDa / 実験値: NO | ||||||||||||||||||||||||
由来(天然) | 生物種: ![]() | ||||||||||||||||||||||||
由来(組換発現) | 生物種: ![]() | ||||||||||||||||||||||||
緩衝液 | pH: 7.5 | ||||||||||||||||||||||||
緩衝液成分 |
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試料 | 濃度: 0.45 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES | ||||||||||||||||||||||||
試料支持 | 詳細: 30 sec at 30 mA / グリッドの材料: GOLD / グリッドのサイズ: 300 divisions/in. / グリッドのタイプ: Quantifoil, UltrAuFoil, R1.2/1.3 | ||||||||||||||||||||||||
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: 277 K / 詳細: Blot time 3 sec, blot force 10. |
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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: FEI TITAN KRIOS |
電子銃 | 電子線源: ![]() |
電子レンズ | モード: BRIGHT FIELD / 倍率(公称値): 75000 X / 倍率(補正後): 129629 X / 最大 デフォーカス(公称値): 500 nm / 最小 デフォーカス(公称値): 500 nm / Calibrated defocus min: 500 nm / Cs: 2.7 mm / C2レンズ絞り径: 50 µm / アライメント法: COMA FREE |
試料ホルダ | 凍結剤: NITROGEN 試料ホルダーモデル: FEI TITAN KRIOS AUTOGRID HOLDER 最高温度: 100 K / 最低温度: 100 K |
撮影 | 平均露光時間: 60 sec. / 電子線照射量: 36 e/Å2 / 検出モード: COUNTING フィルム・検出器のモデル: FEI FALCON III (4k x 4k) 撮影したグリッド数: 2 / 実像数: 2752 |
電子光学装置 | 位相板: VOLTA PHASE PLATE |
画像スキャン | サンプリングサイズ: 14 µm / 横: 4096 / 縦: 4096 |
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解析
ソフトウェア | 名称: PHENIX / バージョン: 1.14_3260: / 分類: 精密化 | ||||||||||||||||||||||||||||||||||||||||
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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: 167472 | ||||||||||||||||||||||||||||||||||||||||
対称性 | 点対称性: C2 (2回回転対称) | ||||||||||||||||||||||||||||||||||||||||
3次元再構成 | 解像度: 4 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 126484 / 対称性のタイプ: POINT | ||||||||||||||||||||||||||||||||||||||||
原子モデル構築 | プロトコル: RIGID BODY FIT | ||||||||||||||||||||||||||||||||||||||||
原子モデル構築 | 3D fitting-ID: 1 / Source name: PDB / タイプ: experimental model
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