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基本情報
登録情報 | データベース: PDB / ID: 6z2k | ||||||||||||
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タイトル | The structure of the tetrameric 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 / protein lysine delactylase activity / p75NTR negatively regulates cell cycle via SC1 / epidermal cell differentiation / histone decrotonylase activity / fungiform papilla formation / NuRD complex ...Loss of MECP2 binding ability to 5mC-DNA / Krueppel-associated box domain binding / Repression of WNT target genes / MECP2 regulates transcription of neuronal ligands / protein lysine delactylase activity / p75NTR negatively regulates cell cycle via SC1 / epidermal cell differentiation / histone decrotonylase activity / fungiform papilla formation / NuRD complex / negative regulation of androgen receptor signaling pathway / regulation of cell fate specification / negative regulation of stem cell population maintenance / endoderm development / histone deacetylase activity, hydrolytic mechanism / Transcription of E2F targets under negative control by p107 (RBL1) and p130 (RBL2) in complex with HDAC1 / histone deacetylase / protein deacetylation / Regulation of MITF-M-dependent genes involved in apoptosis / regulation of stem cell differentiation / STAT3 nuclear events downstream of ALK signaling / Transcription of E2F targets under negative control by DREAM complex / protein lysine deacetylase 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 / histone deacetylase activity / positive regulation of intracellular estrogen receptor signaling pathway / DNA methylation-dependent constitutive heterochromatin formation / Notch-HLH transcription pathway / negative regulation of gene expression, epigenetic / Sin3-type complex / G1/S-Specific Transcription / negative regulation of intrinsic apoptotic signaling pathway / eyelid development in camera-type eye / odontogenesis of dentin-containing tooth / positive regulation of stem cell population maintenance / E-box binding / oligodendrocyte differentiation / histone deacetylase complex / RNA Polymerase I Transcription Initiation / positive regulation of oligodendrocyte differentiation / G0 and Early G1 / Regulation of MECP2 expression and activity / host-mediated suppression of viral transcription / hair follicle placode formation / NF-kappaB binding / FOXO-mediated transcription of oxidative stress, metabolic and neuronal genes / RNA polymerase II core promoter sequence-specific DNA binding / Regulation of MITF-M-dependent genes involved in cell cycle and proliferation / core promoter sequence-specific DNA binding / heterochromatin / Transcriptional regulation of brown and beige adipocyte differentiation by EBF2 / nucleosome binding / Nuclear events stimulated by ALK signaling in cancer / MECP2 regulates neuronal receptors and channels / Regulation of TP53 Activity through Acetylation / cellular response to platelet-derived growth factor stimulus / transcription repressor complex / negative regulation of canonical NF-kappaB signal transduction / positive regulation of smooth muscle cell proliferation / Transcriptional and post-translational regulation of MITF-M expression and activity / SUMOylation of chromatin organization proteins / negative regulation of cell migration / ERCC6 (CSB) and EHMT2 (G9a) positively regulate rRNA expression / Regulation of PTEN gene transcription / transcription corepressor binding / Regulation of endogenous retroelements by KRAB-ZFP proteins / hippocampus development / HDACs deacetylate histones / Deactivation of the beta-catenin transactivating complex / Regulation of endogenous retroelements by Piwi-interacting RNAs (piRNAs) / Downregulation of SMAD2/3:SMAD4 transcriptional activity / promoter-specific chromatin binding / circadian regulation of gene expression / SMAD2/SMAD3:SMAD4 heterotrimer regulates transcription / negative regulation of transforming growth factor beta receptor signaling pathway / Formation of the beta-catenin:TCF transactivating complex / negative regulation of canonical Wnt signaling pathway / RUNX1 regulates genes involved in megakaryocyte differentiation and platelet function / NoRC negatively regulates rRNA expression / NOTCH1 Intracellular Domain Regulates Transcription / Constitutive Signaling by NOTCH1 PEST Domain Mutants / Constitutive Signaling by NOTCH1 HD+PEST Domain Mutants / histone deacetylase binding / neuron differentiation / p53 binding / transcription corepressor activity / heterochromatin formation / chromosome / Factors involved in megakaryocyte development and platelet production / chromatin organization / transcription regulator complex / Estrogen-dependent gene expression / DNA-binding transcription factor binding / Potential therapeutics for SARS / RNA polymerase II-specific DNA-binding transcription factor binding / RNA polymerase II cis-regulatory region sequence-specific DNA binding / chromatin remodeling / negative regulation of gene expression / negative regulation of DNA-templated transcription 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: 4.5 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. | ||||||||||||
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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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PDBx/mmCIF形式 | ![]() | 790.4 KB | 表示 | ![]() |
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PDB形式 | ![]() | 662 KB | 表示 | ![]() |
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-検証レポート
文書・要旨 | ![]() | 1.4 MB | 表示 | ![]() |
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文書・詳細版 | ![]() | 1.4 MB | 表示 | |
XML形式データ | ![]() | 73.7 KB | 表示 | |
CIF形式データ | ![]() | 106.6 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, 12分子 CEKIABGHFDLJ
#1: タンパク質 | 分子量: 55178.906 Da / 分子数: 4 / 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: 4 / 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: 4 / 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, 16分子 




#4: 化合物 | ChemComp-ZN / #5: 化合物 | ChemComp-K / #6: 化合物 | ChemComp-IHP / |
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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: Tetrameric 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: 0.357 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 mA for 30 sec / 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: 151434 | ||||||||||||||||||||||||||||||||||||||||
対称性 | 点対称性: D2 (2回x2回 2面回転対称) | ||||||||||||||||||||||||||||||||||||||||
3次元再構成 | 解像度: 4.5 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 63222 / クラス平均像の数: 1 / 対称性のタイプ: POINT | ||||||||||||||||||||||||||||||||||||||||
原子モデル構築 | プロトコル: FLEXIBLE FIT | ||||||||||||||||||||||||||||||||||||||||
原子モデル構築 | 3D fitting-ID: 1 / Source name: PDB / タイプ: experimental model
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