+データを開く
-基本情報
登録情報 | データベース: EMDB / ID: EMD-31621 | |||||||||
---|---|---|---|---|---|---|---|---|---|---|
タイトル | human Pol III elongation complex | |||||||||
マップデータ | ||||||||||
試料 |
| |||||||||
キーワード | RNA Polymerase III / elongation / pre-termination / TRANSCRIPTION / TRANSCRIPTION-RNA-DNA complex | |||||||||
機能・相同性 | 機能・相同性情報 snRNA transcription by RNA polymerase III / RNA Polymerase III Chain Elongation / RNA Polymerase III Transcription Termination / calcitonin gene-related peptide receptor activity / DNA/RNA hybrid binding / regulation of transcription by RNA polymerase I / regulation of transcription by RNA polymerase III / RPAP3/R2TP/prefoldin-like complex / DNA polymerase III complex / Cytosolic sensors of pathogen-associated DNA ...snRNA transcription by RNA polymerase III / RNA Polymerase III Chain Elongation / RNA Polymerase III Transcription Termination / calcitonin gene-related peptide receptor activity / DNA/RNA hybrid binding / regulation of transcription by RNA polymerase I / regulation of transcription by RNA polymerase III / RPAP3/R2TP/prefoldin-like complex / DNA polymerase III complex / Cytosolic sensors of pathogen-associated DNA / RNA Polymerase III Transcription Initiation From Type 1 Promoter / RNA Polymerase III Transcription Initiation From Type 2 Promoter / RNA Polymerase III Transcription Initiation From Type 3 Promoter / RNA Polymerase III Abortive And Retractive Initiation / positive regulation of innate immune response / Abortive elongation of HIV-1 transcript in the absence of Tat / nucleobase-containing compound metabolic process / RNA Polymerase I Transcription Termination / FGFR2 alternative splicing / MicroRNA (miRNA) biogenesis / Viral Messenger RNA Synthesis / Signaling by FGFR2 IIIa TM / RNA Pol II CTD phosphorylation and interaction with CE during HIV infection / RNA Pol II CTD phosphorylation and interaction with CE / Formation of the Early Elongation Complex / Formation of the HIV-1 Early Elongation Complex / mRNA Capping / PIWI-interacting RNA (piRNA) biogenesis / HIV Transcription Initiation / RNA Polymerase II HIV Promoter Escape / Transcription of the HIV genome / RNA Polymerase II Promoter Escape / RNA Polymerase II Transcription Pre-Initiation And Promoter Opening / RNA Polymerase II Transcription Initiation / RNA Polymerase II Transcription Initiation And Promoter Clearance / termination of RNA polymerase III transcription / transcription initiation at RNA polymerase III promoter / RNA polymerase III activity / mRNA Splicing - Minor Pathway / RNA Polymerase I Transcription Initiation / Pausing and recovery of Tat-mediated HIV elongation / Tat-mediated HIV elongation arrest and recovery / transcription by RNA polymerase I / HIV elongation arrest and recovery / Pausing and recovery of HIV elongation / Processing of Capped Intron-Containing Pre-mRNA / transcription by RNA polymerase III / RNA polymerase II transcribes snRNA genes / neuropeptide signaling pathway / Tat-mediated elongation of the HIV-1 transcript / transcription elongation by RNA polymerase I / Formation of HIV-1 elongation complex containing HIV-1 Tat / tRNA transcription by RNA polymerase III / RNA polymerase I complex / RNA polymerase I activity / RNA polymerase III complex / Formation of HIV elongation complex in the absence of HIV Tat / RNA polymerase II, core complex / RNA Polymerase II Transcription Elongation / Formation of RNA Pol II elongation complex / RNA Polymerase II Pre-transcription Events / Inhibition of DNA recombination at telomere / positive regulation of interferon-beta production / mRNA Splicing - Major Pathway / acrosomal vesicle / protein-DNA complex / TP53 Regulates Transcription of DNA Repair Genes / RNA Polymerase I Promoter Escape / Transcriptional regulation by small RNAs / NoRC negatively regulates rRNA expression / B-WICH complex positively regulates rRNA expression / Transcription-Coupled Nucleotide Excision Repair (TC-NER) / Formation of TC-NER Pre-Incision Complex / ribonucleoside binding / fibrillar center / Activation of anterior HOX genes in hindbrain development during early embryogenesis / DNA-directed 5'-3' RNA polymerase activity / DNA-directed RNA polymerase / Dual incision in TC-NER / Gap-filling DNA repair synthesis and ligation in TC-NER / single-stranded DNA binding / 4 iron, 4 sulfur cluster binding / double-stranded DNA binding / defense response to virus / Estrogen-dependent gene expression / transcription by RNA polymerase II / cell population proliferation / nucleic acid binding / protein dimerization activity / protein stabilization / nuclear body / intracellular membrane-bounded organelle / innate immune response / nucleotide binding / centrosome / DNA-templated transcription / chromatin binding / magnesium ion binding / DNA binding / zinc ion binding 類似検索 - 分子機能 | |||||||||
生物種 | Homo sapiens (ヒト) | |||||||||
手法 | 単粒子再構成法 / 解像度: 3.6 Å | |||||||||
データ登録者 | Hou H / Xu Y | |||||||||
資金援助 | 中国, 1件
| |||||||||
引用 | ジャーナル: Nat Commun / 年: 2021 タイトル: Structural insights into RNA polymerase III-mediated transcription termination through trapping poly-deoxythymidine. 著者: Haifeng Hou / Yan Li / Mo Wang / Aijun Liu / Zishuo Yu / Ke Chen / Dan Zhao / Yanhui Xu / 要旨: Termination of the RNA polymerase III (Pol III)-mediated transcription requires the conversion of an elongation complex (EC) to a pre-termination complex (PTC) on poly-deoxythymidine (dT)-containing ...Termination of the RNA polymerase III (Pol III)-mediated transcription requires the conversion of an elongation complex (EC) to a pre-termination complex (PTC) on poly-deoxythymidine (dT)-containing non-template strand, a mechanism distinct from Pol I and Pol II. Here, our in vitro transcription elongation assay showed that 5-7 dT-containing DNA template led to transcription termination of Pol III, but not Pol I or Pol II. We assembled human Pol III PTC on a 7 dT-containing DNA template and determined the structure at 3.6 Å resolution. The structure reveals that poly-dT are trapped in a narrow exit tunnel formed by RPC2. A hydrophobic gate of the exit tunnel separates the bases of two connected deoxythymidines and may prevent translocation of the non-template strand. The fork loop 2 stabilizes both template and non-template strands around the transcription fork, and may further prevent strand translocation. Our study shows that the Pol III-specific exit tunnel and FL2 allow for efficient translocation of non-poly-dT sequence during transcription elongation but trap poly-dT to promote DNA retention of Pol III, revealing molecular mechanism of poly-dT-dependent transcription termination of Pol III. | |||||||||
履歴 |
|
-構造の表示
ムービー |
ムービービューア |
---|---|
構造ビューア | EMマップ: SurfViewMolmilJmol/JSmol |
添付画像 |
-ダウンロードとリンク
-EMDBアーカイブ
マップデータ | emd_31621.map.gz | 140.9 MB | EMDBマップデータ形式 | |
---|---|---|---|---|
ヘッダ (付随情報) | emd-31621-v30.xml emd-31621.xml | 38.1 KB 38.1 KB | 表示 表示 | EMDBヘッダ |
画像 | emd_31621.png | 141 KB | ||
Filedesc metadata | emd-31621.cif.gz | 10.4 KB | ||
アーカイブディレクトリ | http://ftp.pdbj.org/pub/emdb/structures/EMD-31621 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-31621 | HTTPS FTP |
-検証レポート
文書・要旨 | emd_31621_validation.pdf.gz | 583.3 KB | 表示 | EMDB検証レポート |
---|---|---|---|---|
文書・詳細版 | emd_31621_full_validation.pdf.gz | 582.9 KB | 表示 | |
XML形式データ | emd_31621_validation.xml.gz | 6.7 KB | 表示 | |
CIF形式データ | emd_31621_validation.cif.gz | 7.8 KB | 表示 | |
アーカイブディレクトリ | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-31621 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-31621 | HTTPS FTP |
-関連構造データ
-リンク
EMDBのページ | EMDB (EBI/PDBe) / EMDataResource |
---|---|
「今月の分子」の関連する項目 |
-マップ
ファイル | ダウンロード / ファイル: emd_31621.map.gz / 形式: CCP4 / 大きさ: 178 MB / タイプ: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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: 1.054 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
密度 |
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
対称性 | 空間群: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
詳細 | EMDB XML:
CCP4マップ ヘッダ情報:
|
-添付データ
-試料の構成要素
+全体 : human RNA polymerase III elongation complex
+超分子 #1: human RNA polymerase III elongation complex
+超分子 #2: human RNA polymerase III elongation
+超分子 #3: RNA and DNA
+分子 #1: DNA-directed RNA polymerase III subunit RPC1
+分子 #2: DNA-directed RNA polymerase III subunit RPC2
+分子 #3: DNA-directed RNA polymerases I and III subunit RPAC1
+分子 #4: DNA-directed RNA polymerase III subunit RPC9
+分子 #5: DNA-directed RNA polymerases I, II, and III subunit RPABC1
+分子 #6: DNA-directed RNA polymerases I, II, and III subunit RPABC2
+分子 #7: DNA-directed RNA polymerase III subunit RPC8
+分子 #8: DNA-directed RNA polymerases I, II, and III subunit RPABC3
+分子 #9: DNA-directed RNA polymerase III subunit RPC10
+分子 #10: DNA-directed RNA polymerases I, II, and III subunit RPABC5
+分子 #11: DNA-directed RNA polymerases I and III subunit RPAC2
+分子 #12: DNA-directed RNA polymerases I, II, and III subunit RPABC4
+分子 #13: DNA-directed RNA polymerase III subunit RPC5
+分子 #14: DNA-directed RNA polymerase III subunit RPC4
+分子 #15: DNA-directed RNA polymerase III subunit RPC3
+分子 #16: DNA-directed RNA polymerase III subunit RPC6
+分子 #17: DNA-directed RNA polymerase III subunit RPC7
+分子 #18: RNA (5'-R(*CP*CP*GP*GP*GP*UP*GP*CP*UP*G)-3')
+分子 #19: non_template DNA
+分子 #20: template
+分子 #21: ZINC ION
+分子 #22: IRON/SULFUR CLUSTER
-実験情報
-構造解析
解析 | 単粒子再構成法 |
---|---|
試料の集合状態 | particle |
-試料調製
緩衝液 | pH: 8 |
---|
-電子顕微鏡法
顕微鏡 | FEI TITAN KRIOS |
---|---|
撮影 | フィルム・検出器のモデル: GATAN K2 SUMMIT (4k x 4k) 検出モード: SUPER-RESOLUTION / 平均電子線量: 1.38 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 |
実験機器 | モデル: Titan Krios / 画像提供: FEI Company |
-画像解析
初期モデル | モデルのタイプ: INSILICO MODEL |
---|---|
最終 再構成 | 解像度のタイプ: BY AUTHOR / 解像度: 3.6 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 使用した粒子像数: 40590 |
初期 角度割当 | タイプ: ANGULAR RECONSTITUTION |
最終 角度割当 | タイプ: MAXIMUM LIKELIHOOD |