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基本情報
登録情報 | ![]() | |||||||||
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タイトル | Cryo-EM structure of Mycobacterium tuberculosis transcription activation complex with six PhoP molecules (composite map) | |||||||||
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![]() | bacterial RNA polymerase / GENE REGULATION-DNA COMPLEX | |||||||||
機能・相同性 | ![]() protein secretion by the type VII secretion system / glycolipid biosynthetic process / response to water / Antimicrobial action and antimicrobial resistance in Mtb / phosphorelay response regulator activity / sigma factor activity / bacterial-type RNA polymerase core enzyme binding / cytosolic DNA-directed RNA polymerase complex / positive regulation of lipid biosynthetic process / DNA-directed RNA polymerase complex ...protein secretion by the type VII secretion system / glycolipid biosynthetic process / response to water / Antimicrobial action and antimicrobial resistance in Mtb / phosphorelay response regulator activity / sigma factor activity / bacterial-type RNA polymerase core enzyme binding / cytosolic DNA-directed RNA polymerase complex / positive regulation of lipid biosynthetic process / DNA-directed RNA polymerase complex / peptidoglycan-based cell wall / DNA-templated transcription initiation / : / : / : / protein-DNA complex / : / : / : / ribonucleoside binding / DNA-directed RNA polymerase / response to oxidative stress / transcription cis-regulatory region binding / protein dimerization activity / response to antibiotic / negative regulation of DNA-templated transcription / positive regulation of gene expression / regulation of DNA-templated transcription / positive regulation of DNA-templated transcription / magnesium ion binding / DNA binding / zinc ion binding / metal ion binding / plasma membrane / cytosol / 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: 3.31 Å | |||||||||
![]() | Lin W / Feng Y | |||||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Structural insights into transcription regulation of the global OmpR/PhoB family regulator PhoP from Mycobacterium tuberculosis. 著者: Jing Shi / Zhenzhen Feng / Qian Song / Aijia Wen / Tianyu Liu / Liqiao Xu / Zonghang Ye / Simin Xu / Fei Gao / Liuxiang Xiao / Jiapeng Zhu / Kalyan Das / Guoping Zhao / Jie Li / Yu Feng / Wei Lin / ![]() ![]() 要旨: As a global transcription activator or repressor, the representative OmpR/PhoB family response regulator PhoP plays a crucial role in regulating bacterial pathogenicity and stress adaptation. ...As a global transcription activator or repressor, the representative OmpR/PhoB family response regulator PhoP plays a crucial role in regulating bacterial pathogenicity and stress adaptation. However, the molecular mechanisms underlying the transcriptional regulation that define its differential functions remain largely unclear. In the present study, we determine three cryo-EM structures of Mycobacterium tuberculosis (Mtb) PhoP-dependent transcription activation complexes (PhoP-TACs) and build one preliminary cryo-EM structure model of Mtb PhoP-dependent transcription repression complex (PhoP-TRC). In PhoP-TACs, tandem PhoP dimers cooperatively recognize various types of promoters through conserved PhoP-PHO box interactions, which displace the canonical interactions between the -35 element and σR4 of RNA polymerase (RNAP), unraveling complex transcription activation mechanisms of PhoP. In PhoP-TRC, one PhoP dimer binds and significantly distorts the upstream PHO box of the promoter cross-talked with the global nitrogen regulator GlnR through the PhoP-PHO box, PhoP-GlnR and αCTD-DNA interactions. This unique binding of PhoP creates steric hindrances that prevent additional GlnR binding, positioning PhoP within a unique 'competitive occluding model', as supported by prior biochemical observations. Collectively, these findings reveal the dual molecular mechanisms of PhoP-dependent transcription regulation, and offer valuable insights for further exploration of the enormous PhoP-like OmpR/PhoB family response regulators. | |||||||||
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マップデータ | ![]() | 402.1 MB | ![]() | |
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画像 | ![]() | 38.9 KB | ||
Filedesc metadata | ![]() | 8.8 KB | ||
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
-検証レポート
文書・要旨 | ![]() | 539.4 KB | 表示 | ![]() |
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文書・詳細版 | ![]() | 539 KB | 表示 | |
XML形式データ | ![]() | 8.2 KB | 表示 | |
CIF形式データ | ![]() | 9.4 KB | 表示 | |
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-関連構造データ
関連構造データ | ![]() 9kevMC ![]() 9ji2C ![]() 9ketC ![]() 9keuC ![]() 61497 ![]() 61498 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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「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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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: 0.6 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
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試料の構成要素
+全体 : Mycobacterium tuberculosis transcription activation complex with ...
+超分子 #1: Mycobacterium tuberculosis transcription activation complex with ...
+分子 #1: DNA-directed RNA polymerase subunit alpha
+分子 #2: DNA-directed RNA polymerase subunit beta
+分子 #3: DNA-directed RNA polymerase subunit beta'
+分子 #4: DNA-directed RNA polymerase subunit omega
+分子 #7: RNA polymerase sigma factor SigA
+分子 #8: Possible two component system response transcriptional positive r...
+分子 #5: Non-template strand DNA of the promoter
+分子 #6: Template strand DNA of the promoter
+分子 #9: ZINC ION
+分子 #10: MAGNESIUM 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: 7.9 |
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凍結 | 凍結剤: ETHANE |
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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: 52.0 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): 2.0 µm / 最小 デフォーカス(公称値): 1.0 µm |
実験機器 | ![]() モデル: Titan Krios / 画像提供: FEI Company |
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画像解析
初期モデル | モデルのタイプ: PDB ENTRY PDBモデル - PDB ID: |
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最終 再構成 | 解像度のタイプ: BY AUTHOR / 解像度: 3.31 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 使用した粒子像数: 227755 |
初期 角度割当 | タイプ: MAXIMUM LIKELIHOOD |
最終 角度割当 | タイプ: MAXIMUM LIKELIHOOD |