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基本情報
登録情報 | ![]() | |||||||||
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タイトル | Cryo-EM structure of NAT10 with Co-enzyme A | |||||||||
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![]() | NAT10 / acyltransferase / N4-acetylcytidine / TRANSFERASE | |||||||||
機能・相同性 | ![]() mRNA N-acetyltransferase activity / tRNA wobble cytosine modification / tRNA cytidine N4-acetyltransferase activity / rRNA acetylation involved in maturation of SSU-rRNA / 18S rRNA cytidine N-acetyltransferase activity / tRNA acetylation / rRNA modification / regulation of centrosome duplication / N-acetyltransferase activity / telomerase holoenzyme complex ...mRNA N-acetyltransferase activity / tRNA wobble cytosine modification / tRNA cytidine N4-acetyltransferase activity / rRNA acetylation involved in maturation of SSU-rRNA / 18S rRNA cytidine N-acetyltransferase activity / tRNA acetylation / rRNA modification / regulation of centrosome duplication / N-acetyltransferase activity / telomerase holoenzyme complex / rRNA modification in the nucleus and cytosol / protein acetylation / negative regulation of telomere maintenance via telomerase / DNA polymerase binding / 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 / positive regulation of translation / small-subunit processome / regulation of translation / ribosomal small subunit biogenesis / midbody / tRNA binding / chromosome, telomeric region / nucleolus / RNA binding / nucleoplasm / ATP binding / nucleus / membrane 類似検索 - 分子機能 | |||||||||
生物種 | ![]() | |||||||||
手法 | 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度: 2.9 Å | |||||||||
![]() | Jiang Y / Xia J | |||||||||
資金援助 | 1件
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![]() | ![]() タイトル: Targeting NAT10 attenuates homologous recombination via destabilizing DNA:RNA hybrids and overcomes PARP inhibitor resistance in cancers. 著者: Zhu Xu / Mingming Zhu / Longpo Geng / Jun Zhang / Jing Xia / Qiang Wang / Hongda An / Anliang Xia / Yuanyuan Yu / Shihan Liu / Junjie Tong / Wei-Guo Zhu / Yiyang Jiang / Beicheng Sun / ![]() 要旨: AIMS: RNA metabolism has been extensively studied in DNA double-strand break (DSB) repair. The RNA acetyltransferase N-acetyltransferase 10 (NAT10)-mediated N4-acetylcytidine (ac4C) modification in ...AIMS: RNA metabolism has been extensively studied in DNA double-strand break (DSB) repair. The RNA acetyltransferase N-acetyltransferase 10 (NAT10)-mediated N4-acetylcytidine (ac4C) modification in DSB repair remains largely elusive. In this study, we aim to decipher the role for ac4C modification by NAT10 in DSB repair in hepatocellular carcinoma (HCC). 手法: Laser micro-irradiation and chromatin immunoprecipitation (ChIP) were used to assess the accumulation of ac4C modification and NAT10 at DSB sites. Cryo-electron microscopy (cryo-EM) was used ...手法: Laser micro-irradiation and chromatin immunoprecipitation (ChIP) were used to assess the accumulation of ac4C modification and NAT10 at DSB sites. Cryo-electron microscopy (cryo-EM) was used to determine the structures of NAT10 in complex with its inhibitor, remodelin. Hepatocyte-specific deletion of NAT10 mouse models were adopted to detect the effects of NAT10 on HCC progression. Subcutaneous xenograft, human HCC organoid and patient-derived xenograft (PDX) model were exploited to determine the therapy efficiency of the combination of a poly (ADP-ribose) polymerase 1 (PARP1) inhibitor (PARPi) and remodelin. RESULTS: NAT10 promptly accumulates at DSB sites, where it executes ac4C modification on RNAs at DNA:RNA hybrids dependent on PARP1. This in turn enhances the stability of DNA:RNA hybrids and ...RESULTS: NAT10 promptly accumulates at DSB sites, where it executes ac4C modification on RNAs at DNA:RNA hybrids dependent on PARP1. This in turn enhances the stability of DNA:RNA hybrids and promotes homologous recombination (HR) repair. The ablation of NAT10 curtails HCC progression. Furthermore, the cryo-EM yields a remarkable 2.9 angstroms resolution structure of NAT10-remodelin, showcasing a C2 symmetric architecture. Remodelin treatment significantly enhanced the sensitivity of HCC cells to a PARPi and targeting NAT10 also restored sensitivity to a PARPi in ovarian and breast cancer cells that had developed resistance. CONCLUSION: Our study elucidated the mechanism of NAT10-mediated ac4C modification in DSB repair, revealing that targeting NAT10 confers synthetic lethality to PARP inhibition in HCC. Our findings ...CONCLUSION: Our study elucidated the mechanism of NAT10-mediated ac4C modification in DSB repair, revealing that targeting NAT10 confers synthetic lethality to PARP inhibition in HCC. Our findings suggest that co-inhibition of NAT10 and PARP1 is an effective novel therapeutic strategy for patients with HCC and have the potential to overcome PARPi resistance. | |||||||||
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マップデータ | ![]() | 117.7 MB | ![]() | |
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ヘッダ (付随情報) | ![]() ![]() | 14.7 KB 14.7 KB | 表示 表示 | ![]() |
画像 | ![]() | 126.7 KB | ||
Filedesc metadata | ![]() | 6 KB | ||
その他 | ![]() ![]() | 116 MB 116 MB | ||
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
-関連構造データ
関連構造データ | ![]() 9j3cMC M: このマップから作成された原子モデル C: 同じ文献を引用 ( |
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類似構造データ | 類似検索 - 機能・相同性 ![]() |
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リンク
EMDBのページ | ![]() ![]() |
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「今月の分子」の関連する項目 |
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マップ
ファイル | ![]() | ||||||||||||||||||||||||||||||||||||
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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: 0.81 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
-ハーフマップ: #2
ファイル | emd_61113_half_map_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: #1
ファイル | emd_61113_half_map_2.map | ||||||||||||
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投影像・断面図 |
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密度ヒストグラム |
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試料の構成要素
-全体 : NAT10 with Co-enzyme A
全体 | 名称: NAT10 with Co-enzyme A |
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要素 |
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-超分子 #1: NAT10 with Co-enzyme A
超分子 | 名称: NAT10 with Co-enzyme A / タイプ: complex / ID: 1 / 親要素: 0 / 含まれる分子: #1 |
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由来(天然) | 生物種: ![]() |
-分子 #1: RNA cytidine acetyltransferase
分子 | 名称: RNA cytidine acetyltransferase / タイプ: protein_or_peptide / ID: 1 / コピー数: 2 / 光学異性体: LEVO EC番号: 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 |
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由来(天然) | 生物種: ![]() |
分子量 | 理論値: 103.855844 KDa |
組換発現 | 生物種: ![]() |
配列 | 文字列: MHRKKVDNRI RILIENGVAE RQRSLFVVVG DRGKDQVVIL HHMLSKATVK ARPSVLWCYK KELGFSSHRK KRMRQLQKKI KNGTLNIKQ DDPFELFIAA TNIRYCYYNE THKILGNTFG MCVLQDFEAL TPNLLARTVE TVEGGGLVVI LLRTMNSLKQ L YTVTMDVH ...文字列: MHRKKVDNRI RILIENGVAE RQRSLFVVVG DRGKDQVVIL HHMLSKATVK ARPSVLWCYK KELGFSSHRK KRMRQLQKKI KNGTLNIKQ DDPFELFIAA TNIRYCYYNE THKILGNTFG MCVLQDFEAL TPNLLARTVE TVEGGGLVVI LLRTMNSLKQ L YTVTMDVH SRYRTEAHQD VVGRFNERFI LSLASCKKCL VIDDQLNILP ISSHVATMEA LPPQTPDESL GPSDLELREL KE SLQDTQP VGVLVDCCKT LDQAKAVLKF IEGISEKTLR STVALTAARG RGKSAALGLA IAGAVAFGYS NIFVTSPSPD NLH TLFEFV FKGFDALQYQ EHLDYEIIQS LNPEFNKAVI RVNVFREHRQ TIQYIHPADA VKLGQAELVV IDEAAAIPLP LVKS LLGPY LVFMASTING YEGTGRSLSL KLIQQLRQQS AQSQVSTTAE NKTTTTARLA SARTLYEVSL QESIRYAPGD AVEKW LNDL LCLDCLNITR IVSGCPLPEA CELYYVNRDT LFCYHKASEV FLQRLMALYV ASHYKNSPND LQMLSDAPAH HLFCLL PPV PPTQNALPEV LAVIQVCLEG EISRQSILNS LSRGKKASGD LIPWTVSEQF QDPDFGGLSG GRVVRIAVHP DYQGMGY GS RALQLLQMYY EGRFPCLEEK VLETPQEIHT VSSEAVSLLE EVITPRKDLP PLLLKLNERP AERLDYLGVS YGLTPRLL K FWKRAGFVPV YLRQTPNDLT GEHSCIMLKT LTDEDEADQG GWLAAFWKDF RRRFLALLSY QFSTFSPSLA LNIIQNRNM GKPAQPALSR EELEALFLPY DLKRLEMYSR NMVDYHLIMD MIPAISRIYF LNQLGDLALS AAQSALLLGI GLQHKSVDQL EKEIELPSG QLMGLFNRII RKVVKLFNEV QEKAIEEQMV AAK UniProtKB: RNA cytidine acetyltransferase |
-分子 #2: COENZYME A
分子 | 名称: COENZYME A / タイプ: ligand / ID: 2 / コピー数: 2 / 式: COA |
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分子量 | 理論値: 767.534 Da |
Chemical component information | ![]() ChemComp-COA: |
-実験情報
-構造解析
手法 | クライオ電子顕微鏡法 |
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![]() | 単粒子再構成法 |
試料の集合状態 | particle |
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試料調製
濃度 | 2 mg/mL |
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緩衝液 | pH: 7.4 / 詳細: 20mM Hepes, 150 mM NaCl, 5% Glycerol, pH 7.4 |
凍結 | 凍結剤: ETHANE |
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電子顕微鏡法
顕微鏡 | FEI TITAN KRIOS |
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撮影 | フィルム・検出器のモデル: FEI FALCON I (4k x 4k) 平均電子線量: 49.81 e/Å2 |
電子線 | 加速電圧: 300 kV / 電子線源: ![]() |
電子光学系 | 照射モード: SPOT SCAN / 撮影モード: BRIGHT FIELD / 最大 デフォーカス(公称値): 2.0 µm / 最小 デフォーカス(公称値): 1.2 µm |
実験機器 | ![]() モデル: Titan Krios / 画像提供: FEI Company |
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画像解析
初期モデル | モデルのタイプ: NONE |
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最終 再構成 | 解像度のタイプ: BY AUTHOR / 解像度: 2.9 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 使用した粒子像数: 91734 |
初期 角度割当 | タイプ: ANGULAR RECONSTITUTION |
最終 角度割当 | タイプ: NOT APPLICABLE |