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万見- EMDB-23939: Cryo-EM structure of the human SSU processome, state pre-A1 - raw maps -
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データを開く
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基本情報
| 登録情報 | データベース: EMDB / ID: EMD-23939 | |||||||||
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| タイトル | Cryo-EM structure of the human SSU processome, state pre-A1 - raw maps | |||||||||
マップデータ | Main map | |||||||||
試料 |
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| 機能・相同性 | 機能・相同性情報mRNA cytidine N-acetyltransferase activity / U6 snRNA 2'-O-ribose methyltransferase activity / oocyte growth / nucleologenesis / snoRNA localization / granular component / leucine zipper domain binding / tRNA wobble cytosine modification / U4atac snRNP / tRNA cytidine N4-acetyltransferase activity ...mRNA cytidine N-acetyltransferase activity / U6 snRNA 2'-O-ribose methyltransferase activity / oocyte growth / nucleologenesis / snoRNA localization / granular component / leucine zipper domain binding / tRNA wobble cytosine modification / U4atac snRNP / tRNA cytidine N4-acetyltransferase activity / rRNA acetylation involved in maturation of SSU-rRNA / 18S rRNA cytidine N-acetyltransferase activity / tRNA acetylation / regulation of stem cell population maintenance / U4atac snRNA binding / CURI complex / UTP-C complex / pre-snoRNP complex / negative regulation of amyloid precursor protein biosynthetic process / t-UTP complex / Pwp2p-containing subcomplex of 90S preribosome / Mpp10 complex / rRNA (pseudouridine) methyltransferase activity / box C/D sno(s)RNA binding / rRNA modification / histone H2AQ104 methyltransferase activity / dense fibrillar component / box C/D sno(s)RNA 3'-end processing / histone methyltransferase binding / rRNA methyltransferase activity / preribosome / endonucleolytic cleavage of tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / endonucleolytic cleavage in 5'-ETS of tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / regulation of transcription elongation by RNA polymerase II / regulation of centrosome duplication / endonucleolytic cleavage to generate mature 5'-end of SSU-rRNA from (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / N-acetyltransferase activity / box C/D methylation guide snoRNP complex / cilium disassembly / positive regulation of rRNA processing / tRNA export from nucleus / embryonic cleavage / rRNA primary transcript binding / RNA splicing, via transesterification reactions / sno(s)RNA-containing ribonucleoprotein complex / rRNA base methylation / SUMOylation of RNA binding proteins / blastocyst formation / protein localization to nucleolus / U2-type precatalytic spliceosome / telomerase holoenzyme complex / U4 snRNA binding / rRNA methylation / transcription elongation factor activity / box C/D snoRNP assembly / spindle assembly involved in female meiosis / epigenetic programming in the zygotic pronuclei / neural precursor cell proliferation / negative regulation of RNA splicing / U3 snoRNA binding / protein acetylation / neural crest cell differentiation / NRAGE signals death through JNK / snoRNA binding / preribosome, small subunit precursor / precatalytic spliceosome / rRNA modification in the nucleus and cytosol / negative regulation of bicellular tight junction assembly / Formation of the ternary complex, and subsequently, the 43S complex / erythrocyte homeostasis / cytoplasmic side of rough endoplasmic reticulum membrane / rRNA metabolic process / Cul4-RING E3 ubiquitin ligase complex / Ribosomal scanning and start codon recognition / Translation initiation complex formation / positive regulation of transcription by RNA polymerase I / negative regulation of telomere maintenance via telomerase / Association of TriC/CCT with target proteins during biosynthesis / decidualization / RNA polymerase II complex binding / TFIID-class transcription factor complex binding / Protein hydroxylation / SARS-CoV-1 modulates host translation machinery / TOR signaling / negative regulation of apoptotic signaling pathway / mTORC1-mediated signalling / Peptide chain elongation / chromosome, centromeric region / Selenocysteine synthesis / Formation of a pool of free 40S subunits / cellular response to ethanol / blastocyst development / Eukaryotic Translation Termination / positive regulation of intrinsic apoptotic signaling pathway by p53 class mediator / SRP-dependent cotranslational protein targeting to membrane / Response of EIF2AK4 (GCN2) to amino acid deficiency / Viral mRNA Translation / 90S preribosome / ubiquitin ligase inhibitor activity / Nonsense Mediated Decay (NMD) independent of the Exon Junction Complex (EJC) 類似検索 - 分子機能 | |||||||||
| 生物種 | Homo sapiens (ヒト) | |||||||||
| 手法 | 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度: 3.51 Å | |||||||||
データ登録者 | Vanden Broeck A / Singh S / Klinge S | |||||||||
| 資金援助 | 米国, 2件
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引用 | ジャーナル: Science / 年: 2021タイトル: Nucleolar maturation of the human small subunit processome. 著者: Sameer Singh / Arnaud Vanden Broeck / Linamarie Miller / Malik Chaker-Margot / Sebastian Klinge / ![]() 要旨: The human small subunit processome mediates early maturation of the small ribosomal subunit by coupling RNA folding to subsequent RNA cleavage and processing steps. We report the high-resolution ...The human small subunit processome mediates early maturation of the small ribosomal subunit by coupling RNA folding to subsequent RNA cleavage and processing steps. We report the high-resolution cryo–electron microscopy structures of maturing human small subunit (SSU) processomes at resolutions of 2.7 to 3.9 angstroms. These structures reveal the molecular mechanisms that enable crucial progressions during SSU processome maturation. RNA folding states within these particles are communicated to and coordinated with key enzymes that drive irreversible steps such as targeted exosome-mediated RNA degradation, protein-guided site-specific endonucleolytic RNA cleavage, and tightly controlled RNA unwinding. These conserved mechanisms highlight the SSU processome’s impressive structural plasticity, which endows this 4.5-megadalton nucleolar assembly with the distinctive ability to mature the small ribosomal subunit from within. | |||||||||
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構造の表示
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| 構造ビューア | EMマップ: SurfView Molmil Jmol/JSmol |
| 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_23939.map.gz | 50.7 MB | EMDBマップデータ形式 | |
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| ヘッダ (付随情報) | emd-23939-v30.xml emd-23939.xml | 18.1 KB 18.1 KB | 表示 表示 | EMDBヘッダ |
| FSC (解像度算出) | emd_23939_fsc.xml | 19.8 KB | 表示 | FSCデータファイル |
| 画像 | emd_23939.png | 147.7 KB | ||
| マスクデータ | emd_23939_msk_1.map | 669.9 MB | マスクマップ | |
| その他 | emd_23939_additional_1.map.gz emd_23939_half_map_1.map.gz emd_23939_half_map_2.map.gz | 625.2 MB 541.8 MB 541.9 MB | ||
| アーカイブディレクトリ | http://ftp.pdbj.org/pub/emdb/structures/EMD-23939 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-23939 | HTTPS FTP |
-関連構造データ
| 関連構造データ | ![]() 7mq8C ![]() 7mq9C ![]() 7mqaC ![]() 7mqjC C: 同じ文献を引用 ( |
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| 類似構造データ | |
| 電子顕微鏡画像生データ | EMPIAR-10781 (タイトル: Nucleolar maturation of the human small subunit processomeData size: 74.6 TB Data #1: Unaligned multi-frame micrograph movies of human SSU processomes - Dataset 1 [micrographs - multiframe] Data #2: Unaligned multi-frame micrograph movies of human SSU processomes - Dataset 2 [micrographs - multiframe] Data #3: Unaligned multi-frame micrograph movies of human SSU processomes - Dataset 3 [micrographs - multiframe] Data #4: Unaligned multi-frame micrograph movies of human SSU processomes - Dataset 4 [micrographs - multiframe] Data #5: Unaligned multi-frame micrograph movies of human SSU processomes - Dataset 5 [micrographs - multiframe] Data #6: Unaligned multi-frame micrograph movies of human SSU processomes - Dataset 6 [micrographs - multiframe] Data #7: Aligned and averaged micrographs of human SSU processomes - Dataset 1 [micrographs - single frame] Data #8: Aligned and averaged micrographs of human SSU processomes - Dataset 2 [micrographs - single frame] Data #9: Aligned and averaged micrographs of human SSU processomes - Dataset 3 [micrographs - single frame] Data #10: Aligned and averaged micrographs of human SSU processomes - Dataset 4 [micrographs - single frame] Data #11: Aligned and averaged micrographs of human SSU processomes - Dataset 5 [micrographs - single frame] Data #12: Aligned and averaged micrographs of human SSU processomes - Dataset 6 [micrographs - single frame]) |
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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 |
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マップ
| ファイル | ダウンロード / ファイル: emd_23939.map.gz / 形式: CCP4 / 大きさ: 669.9 MB / タイプ: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| 注釈 | Main 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: 1.08 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| 対称性 | 空間群: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 詳細 | EMDB XML:
CCP4マップ ヘッダ情報:
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-添付データ
-マスク #1
| ファイル | emd_23939_msk_1.map | ||||||||||||
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| 密度ヒストグラム |
-追加マップ: #1
| ファイル | emd_23939_additional_1.map | ||||||||||||
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| 密度ヒストグラム |
-ハーフマップ: Half-Map1
| ファイル | emd_23939_half_map_1.map | ||||||||||||
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| 注釈 | Half-Map1 | ||||||||||||
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| 密度ヒストグラム |
-ハーフマップ: Half-Map2
| ファイル | emd_23939_half_map_2.map | ||||||||||||
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| 注釈 | Half-Map2 | ||||||||||||
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試料の構成要素
-全体 : Human SSU processome, state pre-A1
| 全体 | 名称: Human SSU processome, state pre-A1 |
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-超分子 #1: Human SSU processome, state pre-A1
| 超分子 | 名称: Human SSU processome, state pre-A1 / タイプ: complex / ID: 1 / 親要素: 0 |
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| 由来(天然) | 生物種: Homo sapiens (ヒト) |
| 分子量 | 理論値: 5 MDa |
-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 |
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試料調製
| 緩衝液 | pH: 7.6 |
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| グリッド | モデル: Quantifoil R2/2 / 材質: GOLD / メッシュ: 400 / 支持フィルム - 材質: CARBON / 支持フィルム - トポロジー: HOLEY / 支持フィルム - Film thickness: 3.0 nm / 前処理 - タイプ: GLOW DISCHARGE |
| 凍結 | 凍結剤: ETHANE / チャンバー内湿度: 90 % / チャンバー内温度: 283 K / 装置: FEI VITROBOT MARK IV |
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電子顕微鏡法
| 顕微鏡 | FEI TITAN KRIOS |
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| 特殊光学系 | エネルギーフィルター - スリット幅: 20 eV |
| 撮影 | フィルム・検出器のモデル: GATAN K3 (6k x 4k) / 実像数: 84904 / 平均電子線量: 58.0 e/Å2 |
| 電子線 | 加速電圧: 300 kV / 電子線源: FIELD EMISSION GUN |
| 電子光学系 | 照射モード: FLOOD BEAM / 撮影モード: BRIGHT FIELD / Cs: 0.01 mm / 最大 デフォーカス(公称値): 2.7 µm 最小 デフォーカス(公称値): 0.7000000000000001 µm |
| 試料ステージ | 試料ホルダーモデル: FEI TITAN KRIOS AUTOGRID HOLDER |
| 実験機器 | ![]() モデル: Titan Krios / 画像提供: FEI Company |
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画像解析
-原子モデル構築 1
| 精密化 | 空間: REAL |
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万見について


Homo sapiens (ヒト)
データ登録者
米国, 2件
引用
UCSF Chimera







































































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