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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-23936 | |||||||||
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| タイトル | Cryo-EM structure of the human SSU processome, state pre-A1 | |||||||||
マップデータ | ||||||||||
試料 |
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キーワード | Ribosomal assembly intermediate / RIBOSOME | |||||||||
| 機能・相同性 | 機能・相同性情報mRNA N-acetyltransferase activity / U6 snRNA 2'-O-ribose methyltransferase activity / oocyte growth / nucleologenesis / snoRNA localization / leucine zipper domain binding / granular component / tRNA wobble cytosine modification / tRNA cytidine N4-acetyltransferase activity / rRNA acetylation involved in maturation of SSU-rRNA ...mRNA N-acetyltransferase activity / U6 snRNA 2'-O-ribose methyltransferase activity / oocyte growth / nucleologenesis / snoRNA localization / leucine zipper domain binding / granular component / 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 / U4atac snRNP / CURI complex / UTP-C complex / regulation of stem cell population maintenance / t-UTP complex / U4atac snRNA binding / Pwp2p-containing subcomplex of 90S preribosome / Mpp10 complex / negative regulation of amyloid precursor protein biosynthetic process / rRNA (pseudouridine) methyltransferase activity / rRNA modification / pre-snoRNP complex / histone H2AQ104 methyltransferase activity / box C/D sno(s)RNA binding / preribosome / box C/D sno(s)RNA 3'-end processing / endonucleolytic cleavage in 5'-ETS of tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / rRNA methyltransferase activity / dense fibrillar component / endonucleolytic cleavage of tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / regulation of centrosome duplication / histone methyltransferase binding / endonucleolytic cleavage to generate mature 5'-end of SSU-rRNA from (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / N-acetyltransferase activity / regulation of transcription elongation by RNA polymerase II / box C/D methylation guide snoRNP complex / positive regulation of rRNA processing / tRNA export from nucleus / cilium disassembly / embryonic cleavage / rRNA primary transcript binding / transcription elongation factor activity / sno(s)RNA-containing ribonucleoprotein complex / RNA splicing, via transesterification reactions / rRNA base methylation / blastocyst formation / U4 snRNA binding / protein localization to nucleolus / spindle assembly involved in female meiosis / epigenetic programming in the zygotic pronuclei / SUMOylation of RNA binding proteins / telomerase holoenzyme complex / U2-type precatalytic spliceosome / negative regulation of RNA splicing / rRNA methylation / box C/D snoRNP assembly / neural crest cell differentiation / neural precursor cell proliferation / U3 snoRNA binding / negative regulation of bicellular tight junction assembly / rRNA modification in the nucleus and cytosol / Formation of the ternary complex, and subsequently, the 43S complex / erythrocyte homeostasis / cytoplasmic side of rough endoplasmic reticulum membrane / snoRNA binding / preribosome, small subunit precursor / precatalytic spliceosome / negative regulation of ubiquitin protein ligase activity / Cul4-RING E3 ubiquitin ligase complex / protein acetylation / NRAGE signals death through JNK / Ribosomal scanning and start codon recognition / Translation initiation complex formation / rRNA metabolic process / negative regulation of telomere maintenance via telomerase / positive regulation of transcription by RNA polymerase I / Association of TriC/CCT with target proteins during biosynthesis / TOR signaling / Protein hydroxylation / RNA polymerase II complex binding / SARS-CoV-1 modulates host translation machinery / decidualization / TFIID-class transcription factor complex binding / cellular response to ethanol / mTORC1-mediated signalling / Peptide chain elongation / Selenocysteine synthesis / negative regulation of apoptotic signaling pathway / Formation of a pool of free 40S subunits / positive regulation of intrinsic apoptotic signaling pathway by p53 class mediator / Eukaryotic Translation Termination / ubiquitin ligase inhibitor activity / blastocyst development / Response of EIF2AK4 (GCN2) to amino acid deficiency / SRP-dependent cotranslational protein targeting to membrane / negative regulation of ubiquitin-dependent protein catabolic process / chromosome, centromeric region / Viral mRNA Translation 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: 3.6 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. | |||||||||
| 履歴 |
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構造の表示
| ムービー |
ムービービューア |
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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_23936.map.gz | 615.5 MB | EMDBマップデータ形式 | |
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| ヘッダ (付随情報) | emd-23936-v30.xml emd-23936.xml | 125.6 KB 125.6 KB | 表示 表示 | EMDBヘッダ |
| FSC (解像度算出) | emd_23936_fsc.xml | 19.8 KB | 表示 | FSCデータファイル |
| 画像 | emd_23936.png | 161 KB | ||
| マスクデータ | emd_23936_msk_1.map | 669.9 MB | マスクマップ | |
| Filedesc metadata | emd-23936.cif.gz | 31.4 KB | ||
| その他 | emd_23936_additional_1.map.gz emd_23936_half_map_1.map.gz emd_23936_half_map_2.map.gz | 614.3 MB 535 MB 534.4 MB | ||
| アーカイブディレクトリ | http://ftp.pdbj.org/pub/emdb/structures/EMD-23936 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-23936 | HTTPS FTP |
-検証レポート
| 文書・要旨 | emd_23936_validation.pdf.gz | 1.1 MB | 表示 | EMDB検証レポート |
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| 文書・詳細版 | emd_23936_full_validation.pdf.gz | 1.1 MB | 表示 | |
| XML形式データ | emd_23936_validation.xml.gz | 27.9 KB | 表示 | |
| CIF形式データ | emd_23936_validation.cif.gz | 37.6 KB | 表示 | |
| アーカイブディレクトリ | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-23936 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-23936 | HTTPS FTP |
-関連構造データ
| 関連構造データ | ![]() 7mq8MC ![]() 7mq9C ![]() 7mqaC ![]() 7mqjC C: 同じ文献を引用 ( M: このマップから作成された原子モデル |
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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_23936.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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| 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_23936_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_23936_additional_1.map | ||||||||||||
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| 密度ヒストグラム |
-ハーフマップ: #2
| ファイル | emd_23936_half_map_1.map | ||||||||||||
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| 密度ヒストグラム |
-ハーフマップ: #1
| ファイル | emd_23936_half_map_2.map | ||||||||||||
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試料の構成要素
+全体 : Human SSU processome
+超分子 #1: Human SSU processome
+分子 #1: 5'ETS rRNA
+分子 #2: 18S rRNA
+分子 #3: U3 snoRNA
+分子 #31: 5'ETS rRNA
+分子 #4: 40S ribosomal protein S18
+分子 #5: 40S ribosomal protein S4, X isoform
+分子 #6: 40S ribosomal protein S5
+分子 #7: 40S ribosomal protein S6
+分子 #8: 40S ribosomal protein S7
+分子 #9: 40S ribosomal protein S8
+分子 #10: 40S ribosomal protein S9
+分子 #11: 40S ribosomal protein S12
+分子 #12: 40S ribosomal protein S16
+分子 #13: 40S ribosomal protein S11
+分子 #14: 40S ribosomal protein S24
+分子 #15: 40S ribosomal protein S28
+分子 #16: WD repeat-containing protein 75
+分子 #17: Nucleolar protein 11
+分子 #18: U3 small nucleolar RNA-associated protein 15 homolog
+分子 #19: WD repeat-containing protein 43
+分子 #20: HEAT repeat-containing protein 1
+分子 #21: U3 small nucleolar RNA-associated protein 4 homolog
+分子 #22: Periodic tryptophan protein 2 homolog
+分子 #23: U3 small nucleolar RNA-associated protein 6 homolog
+分子 #24: WD repeat-containing protein 3
+分子 #25: Transducin beta-like protein 3
+分子 #26: U3 small nucleolar RNA-associated protein 18 homolog
+分子 #27: WD repeat-containing protein 36
+分子 #28: DDB1- and CUL4-associated factor 13
+分子 #29: WD repeat-containing protein 46
+分子 #30: U3 small nucleolar ribonucleoprotein protein IMP3
+分子 #32: U3 small nucleolar ribonucleoprotein protein MPP10
+分子 #33: Something about silencing protein 10
+分子 #34: Neuroguidin
+分子 #35: Nucleolar protein 7
+分子 #36: Uncharacterized protein C1orf131
+分子 #37: 40S ribosomal protein S13
+分子 #38: 40S ribosomal protein S14
+分子 #39: Nucleolar protein 6
+分子 #40: Ribosomal RNA-processing protein 7 homolog A
+分子 #41: RNA cytidine acetyltransferase
+分子 #42: 40S ribosomal protein S3a
+分子 #43: Protein AATF
+分子 #44: 40S ribosomal protein S15a
+分子 #45: 40S ribosomal protein S27
+分子 #46: RRP12-like protein
+分子 #47: Ubiquitin-40S ribosomal protein S27a
+分子 #48: 40S ribosomal protein S17
+分子 #49: Nucleolar protein 10
+分子 #50: KRR1 small subunit processome component homolog
+分子 #51: Nucleolar protein 56
+分子 #52: Nucleolar protein 58
+分子 #53: rRNA 2'-O-methyltransferase fibrillarin
+分子 #54: NHP2-like protein 1
+分子 #55: U3 small nucleolar RNA-interacting protein 2
+分子 #56: RNA 3'-terminal phosphate cyclase-like protein
+分子 #57: Ribosome biogenesis protein BMS1 homolog
+分子 #58: Ribosomal RNA small subunit methyltransferase NEP1
+分子 #59: rRNA-processing protein FCF1 homolog
+分子 #60: U3 small nucleolar ribonucleoprotein protein IMP4
+分子 #61: Small subunit processome component 20 homolog
+分子 #62: Deoxynucleotidyltransferase terminal-interacting protein 2
+分子 #63: 40S ribosomal protein S23
+分子 #64: U3 small nucleolar RNA-associated protein 14 homolog A
+分子 #65: Nucleolar protein 14
+分子 #66: Nucleolar complex protein 4 homolog
+分子 #67: RNA-binding protein PNO1
+分子 #68: Unassigned peptide
+分子 #69: Unassigned peptides
+分子 #70: Probable U3 small nucleolar RNA-associated protein 11
+分子 #71: Bystin
+分子 #72: MAGNESIUM ION
+分子 #73: ADENOSINE-5'-TRIPHOSPHATE
+分子 #74: ZINC ION
+分子 #75: GUANOSINE-5'-TRIPHOSPHATE
+分子 #76: S-ADENOSYL-L-HOMOCYSTEINE
-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 / 前処理 - タイプ: GLOW DISCHARGE / 前処理 - 時間: 30 sec. |
| 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
| 初期モデル |
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| 精密化 | 空間: REAL | ||||||||||||||||||||
| 得られたモデル | ![]() PDB-7mq8: |
ムービー
コントローラー
万見について



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







































































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