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基本情報
登録情報 | ![]() | |||||||||
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タイトル | Structure of the KEOPS complex (Cgi121/Bud32/Kae1/Pcc1) bound to tRNA in a distorted tRNA conformation | |||||||||
![]() | Structure of the KEOPS complex (Cgi121/Bud32/Kae1/Pcc1) bound to tRNA in a distorted tRNA conformation | |||||||||
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![]() | tRNA / modification / t6A / RNA BINDING PROTEIN / RNA BINDING PROTEIN-RNA complex | |||||||||
機能・相同性 | ![]() N6-L-threonylcarbamoyladenine synthase / N(6)-L-threonylcarbamoyladenine synthase activity / EKC/KEOPS complex / tRNA threonylcarbamoyladenosine modification / protein serine/threonine/tyrosine kinase activity / histone H4S1 kinase activity / histone H2BS14 kinase activity / histone H2AS121 kinase activity / histone H3S57 kinase activity / histone H3S28 kinase activity ...N6-L-threonylcarbamoyladenine synthase / N(6)-L-threonylcarbamoyladenine synthase activity / EKC/KEOPS complex / tRNA threonylcarbamoyladenosine modification / protein serine/threonine/tyrosine kinase activity / histone H4S1 kinase activity / histone H2BS14 kinase activity / histone H2AS121 kinase activity / histone H3S57 kinase activity / histone H3S28 kinase activity / histone H2AS1 kinase activity / histone H3T6 kinase activity / ribosomal protein S6 kinase activity / histone H2AT120 kinase activity / histone H2BS36 kinase activity / Rho-dependent protein serine/threonine kinase activity / histone H3S10 kinase activity / AMP-activated protein kinase activity / 3-phosphoinositide-dependent protein kinase activity / histone H3T11 kinase activity / histone H3T3 kinase activity / histone H3T45 kinase activity / DNA-dependent protein kinase activity / histone H2AXS139 kinase activity / metalloendopeptidase activity / non-specific serine/threonine protein kinase / iron ion binding / protein serine kinase activity / zinc ion binding / ATP binding / cytoplasm 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: 3.59 Å | |||||||||
![]() | Ona Chuquimarca SM / Beenstock J / Daou S / Keszei AFA / Yin Z / Sicheri F | |||||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Structures of KEOPS bound to tRNA reveal functional roles of the kinase Bud32. 著者: Samara Mishelle Ona Chuquimarca / Jonah Beenstock / Salima Daou / Jennifer Porat / Alexander F A Keszei / Jay Z Yin / Tobias Beschauner / Mark A Bayfield / Mohammad T Mazhab-Jafari / Frank Sicheri / ![]() 要旨: The enzyme complex KEOPS (Kinase, Endopeptidase and Other Proteins of Small size) installs the universally conserved and essential N-threonylcarbamoyl adenosine modification (tA) on ANN-decoding ...The enzyme complex KEOPS (Kinase, Endopeptidase and Other Proteins of Small size) installs the universally conserved and essential N-threonylcarbamoyl adenosine modification (tA) on ANN-decoding tRNAs in eukaryotes and in archaea. KEOPS consists of Cgi121, Kae1, Pcc1, Gon7 and the atypical kinase/ATPase Bud32. Except Gon7, all KEOPS subunits are needed for tRNA modification, and in humans, mutations in all five genes underlie the lethal genetic disease Galloway Mowat Syndrome (GAMOS). Kae1 catalyzes the modification of tRNA, but the specific contributions of Bud32 and the other subunits are less clear. Here we solved cryogenic electron microscopy structures of KEOPS with and without a tRNA substrate. We uncover distinct flexibility of KEOPS-bound tRNA revealing a conformational change that may enable its modification by Kae1. We further identified a contact between a flipped-out base of the tRNA and an arginine residue in C-terminal tail of Bud32 that correlates with the conformational change in the tRNA. We also uncover contact surfaces within the KEOPS-tRNA holo-enzyme substrate complex that are required for Bud32 ATPase regulation and tA modification activity. Our findings uncover inner workings of KEOPS including a basis for substrate specificity and why Kae1 depends on all other subunits. | |||||||||
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構造の表示
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-EMDBアーカイブ
マップデータ | ![]() | 59.7 MB | ![]() | |
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ヘッダ (付随情報) | ![]() ![]() | 27.1 KB 27.1 KB | 表示 表示 | ![]() |
FSC (解像度算出) | ![]() | 9.5 KB | 表示 | ![]() |
画像 | ![]() | 57.6 KB | ||
Filedesc metadata | ![]() | 7.6 KB | ||
その他 | ![]() ![]() | 59.4 MB 59.4 MB | ||
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
-検証レポート
文書・要旨 | ![]() | 757.7 KB | 表示 | ![]() |
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文書・詳細版 | ![]() | 757.2 KB | 表示 | |
XML形式データ | ![]() | 16.2 KB | 表示 | |
CIF形式データ | ![]() | 20.9 KB | 表示 | |
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 | ![]() 9d85MC ![]() 8unkC ![]() 8up5C ![]() 42470 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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マップ
ファイル | ![]() | ||||||||||||||||||||||||||||||||||||
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注釈 | Structure of the KEOPS complex (Cgi121/Bud32/Kae1/Pcc1) bound to tRNA in a distorted tRNA conformation | ||||||||||||||||||||||||||||||||||||
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: 1.03 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: Half Map A
ファイル | emd_46630_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_46630_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 |
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試料の構成要素
+全体 : Structure of the KEOPS complex (Cgi121/Bud32/Kae1/Pcc1)
+超分子 #1: Structure of the KEOPS complex (Cgi121/Bud32/Kae1/Pcc1)
+超分子 #2: Bud32
+超分子 #3: Cgi121
+超分子 #4: Kae1
+超分子 #5: Pcc1
+分子 #1: Probable bifunctional tRNA threonylcarbamoyladenosine biosynthesi...
+分子 #2: Regulatory protein Cgi121
+分子 #3: Probable bifunctional tRNA threonylcarbamoyladenosine biosynthesi...
+分子 #4: KEOPS complex subunit Pcc1
+分子 #5: tRNA
-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
緩衝液 | pH: 7.5 |
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凍結 | 凍結剤: ETHANE-PROPANE |
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電子顕微鏡法
顕微鏡 | TFS KRIOS |
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撮影 | フィルム・検出器のモデル: GATAN K3 (6k x 4k) / 平均電子線量: 55.61 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: FLOOD BEAM / 撮影モード: BRIGHT FIELD / 最大 デフォーカス(公称値): 2.9 µm / 最小 デフォーカス(公称値): 0.4 µm |
実験機器 | ![]() モデル: Titan Krios / 画像提供: FEI Company |