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基本情報
登録情報 | データベース: EMDB / ID: EMD-11418 | ||||||||||||||||||
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タイトル | E. coli 70S-RNAP expressome complex in NusG-coupled state (38 nt intervening mRNA) | ||||||||||||||||||
![]() | NusG-coupled E. coli expressome with intervening mRNA length 38 nucleotides: composite map. | ||||||||||||||||||
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![]() | Transcription / Translation / Expressome / Ribosome / RNA polymerase / GENE REGULATION | ||||||||||||||||||
機能・相同性 | ![]() RNA secondary structure unwinding / positive regulation of cytoplasmic translation / transcription elongation-coupled chromatin remodeling / RNA polymerase complex / submerged biofilm formation / cellular response to cell envelope stress / stringent response / cytosolic DNA-directed RNA polymerase complex / regulation of DNA-templated transcription initiation / bacterial-type flagellum assembly ...RNA secondary structure unwinding / positive regulation of cytoplasmic translation / transcription elongation-coupled chromatin remodeling / RNA polymerase complex / submerged biofilm formation / cellular response to cell envelope stress / stringent response / cytosolic DNA-directed RNA polymerase complex / regulation of DNA-templated transcription initiation / bacterial-type flagellum assembly / bacterial-type flagellum-dependent cell motility / transcriptional attenuation / endoribonuclease inhibitor activity / RNA-binding transcription regulator activity / positive regulation of ribosome biogenesis / negative regulation of cytoplasmic translation / nitrate assimilation / DNA-directed RNA polymerase complex / translational termination / DnaA-L2 complex / translation repressor activity / negative regulation of DNA-templated DNA replication initiation / ribosome assembly / mRNA regulatory element binding translation repressor activity / assembly of large subunit precursor of preribosome / transcription elongation factor complex / cytosolic ribosome assembly / regulation of DNA-templated transcription elongation / transcription antitermination / DNA-templated transcription initiation / response to reactive oxygen species / cell motility / regulation of cell growth / DNA-templated transcription termination / response to radiation / ribosomal large subunit assembly / ribonucleoside binding / mRNA 5'-UTR binding / DNA-directed 5'-3' RNA polymerase activity / DNA-directed RNA polymerase / large ribosomal subunit / ribosome biogenesis / ribosome binding / ribosomal small subunit biogenesis / ribosomal small subunit assembly / small ribosomal subunit / small ribosomal subunit rRNA binding / transferase activity / response to heat / 5S rRNA binding / large ribosomal subunit rRNA binding / protein-containing complex assembly / cytosolic small ribosomal subunit / intracellular iron ion homeostasis / cytosolic large ribosomal subunit / tRNA binding / cytoplasmic translation / single-stranded RNA binding / protein dimerization activity / rRNA binding / negative regulation of translation / ribosome / structural constituent of ribosome / ribonucleoprotein complex / translation / response to antibiotic / negative regulation of DNA-templated transcription / DNA-templated transcription / mRNA binding / magnesium ion binding / DNA binding / RNA binding / zinc ion binding / membrane / metal ion binding / cytoplasm / cytosol 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: 3.4 Å | ||||||||||||||||||
![]() | Webster MW / Takacs M | ||||||||||||||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Structural basis of transcription-translation coupling and collision in bacteria. 著者: Michael William Webster / Maria Takacs / Chengjin Zhu / Vita Vidmar / Ayesha Eduljee / Mo'men Abdelkareem / Albert Weixlbaumer / ![]() 要旨: Prokaryotic messenger RNAs (mRNAs) are translated as they are transcribed. The lead ribosome potentially contacts RNA polymerase (RNAP) and forms a supramolecular complex known as the expressome. The ...Prokaryotic messenger RNAs (mRNAs) are translated as they are transcribed. The lead ribosome potentially contacts RNA polymerase (RNAP) and forms a supramolecular complex known as the expressome. The basis of expressome assembly and its consequences for transcription and translation are poorly understood. Here, we present a series of structures representing uncoupled, coupled, and collided expressome states determined by cryo-electron microscopy. A bridge between the ribosome and RNAP can be formed by the transcription factor NusG, which stabilizes an otherwise-variable interaction interface. Shortening of the intervening mRNA causes a substantial rearrangement that aligns the ribosome entrance channel to the RNAP exit channel. In this collided complex, NusG linkage is no longer possible. These structures reveal mechanisms of coordination between transcription and translation and provide a framework for future study. | ||||||||||||||||||
履歴 |
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構造の表示
ムービー |
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構造ビューア | EMマップ: ![]() ![]() ![]() |
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FSC (解像度算出) | ![]() | 22.6 KB | 表示 | ![]() |
画像 | ![]() | 100.1 KB | ||
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文書・詳細版 | ![]() | 1.1 MB | 表示 | |
XML形式データ | ![]() | 30.2 KB | 表示 | |
CIF形式データ | ![]() | 40.6 KB | 表示 | |
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-関連構造データ
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リンク
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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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注釈 | NusG-coupled E. coli expressome with intervening mRNA length 38 nucleotides: composite map. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
ボクセルのサイズ | X=Y=Z: 1.052 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
密度 |
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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
+追加マップ: NusG-coupled E. coli expressome with intervening mRNA length...
+追加マップ: NusG-coupled E. coli expressome with intervening mRNA length...
+追加マップ: NusG-coupled E. coli expressome with intervening mRNA length...
+追加マップ: NusG-coupled E. coli expressome with intervening mRNA length...
+追加マップ: NusG-coupled E. coli expressome with intervening mRNA length...
+追加マップ: NusG-coupled E. coli expressome with intervening mRNA length...
+追加マップ: NusG-coupled E. coli expressome with intervening mRNA length...
+追加マップ: NusG-coupled E. coli expressome with intervening mRNA length...
+追加マップ: NusG-coupled E. coli expressome with intervening mRNA length...
+追加マップ: NusG-coupled E. coli expressome with intervening mRNA length...
+追加マップ: NusG-coupled E. coli expressome with intervening mRNA length...
+追加マップ: NusG-coupled E. coli expressome with intervening mRNA length...
+追加マップ: NusG-coupled E. coli expressome with intervening mRNA length...
+追加マップ: NusG-coupled E. coli expressome with intervening mRNA length...
+追加マップ: NusG-coupled E. coli expressome with intervening mRNA length...
+追加マップ: NusG-coupled E. coli expressome with intervening mRNA length...
+ハーフマップ: NusG-coupled E. coli expressome with intervening mRNA length...
+ハーフマップ: NusG-coupled E. coli expressome with intervening mRNA length...
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試料の構成要素
+全体 : E. coli 70S-RNAP expressome complex in NusG-coupled state
+超分子 #1: E. coli 70S-RNAP expressome complex in NusG-coupled state
+超分子 #2: 70S ribosome within the NusG-coupled expressome
+超分子 #3: DNA-directed RNA polymerase within the NusG-coupled expressome
+超分子 #4: synthetic mRNA and template DNA
+分子 #1: 16S ribosomal RNA
+分子 #22: mRNA
+分子 #23: tRNA(fmet) P-site
+分子 #24: Phe-NH-tRNA(Phe) A-site
+分子 #26: 23S ribosomal RNA
+分子 #27: 5S ribosomal RNA
+分子 #2: 30S ribosomal protein S2
+分子 #3: 30S ribosomal protein S3
+分子 #4: 30S ribosomal protein S4
+分子 #5: 30S ribosomal protein S5
+分子 #6: 30S ribosomal protein S6
+分子 #7: 30S ribosomal protein S7
+分子 #8: 30S ribosomal protein S8
+分子 #9: 30S ribosomal protein S9
+分子 #10: 30S ribosomal protein S10
+分子 #11: 30S ribosomal protein S11
+分子 #12: 30S ribosomal protein S12
+分子 #13: 30S ribosomal protein S13
+分子 #14: 30S ribosomal protein S14
+分子 #15: 30S ribosomal protein S15
+分子 #16: 30S ribosomal protein S16
+分子 #17: 30S ribosomal protein S17
+分子 #18: 30S ribosomal protein S18
+分子 #19: 30S ribosomal protein S19
+分子 #20: 30S ribosomal protein S20
+分子 #21: 30S ribosomal protein S21
+分子 #25: 30S ribosomal protein S1
+分子 #28: 50S ribosomal protein L2
+分子 #29: 50S ribosomal protein L3
+分子 #30: 50S ribosomal protein L4
+分子 #31: 50S ribosomal protein L5
+分子 #32: 50S ribosomal protein L6
+分子 #33: 50S ribosomal protein L9
+分子 #34: 50S ribosomal protein L10
+分子 #35: 50S ribosomal protein L11
+分子 #36: 50S ribosomal protein L13
+分子 #37: 50S ribosomal protein L14
+分子 #38: 50S ribosomal protein L15
+分子 #39: 50S ribosomal protein L16
+分子 #40: 50S ribosomal protein L17
+分子 #41: 50S ribosomal protein L18
+分子 #42: 50S ribosomal protein L19
+分子 #43: 50S ribosomal protein L20
+分子 #44: 50S ribosomal protein L21
+分子 #45: 50S ribosomal protein L22
+分子 #46: 50S ribosomal protein L23
+分子 #47: 50S ribosomal protein L24
+分子 #48: 50S ribosomal protein L25
+分子 #49: 50S ribosomal protein L27
+分子 #50: 50S ribosomal protein L28
+分子 #51: 50S ribosomal protein L29
+分子 #52: 50S ribosomal protein L30
+分子 #53: 50S ribosomal protein L32
+分子 #54: 50S ribosomal protein L33
+分子 #55: 50S ribosomal protein L34
+分子 #56: 50S ribosomal protein L35
+分子 #57: 50S ribosomal protein L36
+分子 #58: 50S ribosomal protein L31
+分子 #61: DNA-directed RNA polymerase subunit alpha
+分子 #62: DNA-directed RNA polymerase subunit beta
+分子 #63: DNA-directed RNA polymerase subunit beta'
+分子 #64: DNA-directed RNA polymerase subunit omega
+分子 #65: Transcription termination/antitermination protein NusG
+分子 #59: Non-template DNA strand
+分子 #60: Template DNA strand
+分子 #66: MAGNESIUM ION
+分子 #67: PHENYLALANINE
+分子 #68: ZINC ION
-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: 8 構成要素:
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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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撮影 | フィルム・検出器のモデル: GATAN K2 SUMMIT (4k x 4k) 検出モード: COUNTING / 平均電子線量: 42.0 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): 3.5 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 / プロトコル: RIGID BODY FIT / 当てはまり具合の基準: Correlation coefficient | ||||||
得られたモデル | ![]() PDB-6ztj: |