登録情報 データベース : EMDB / ID : EMD-34397 ダウンロードとリンクタイトル Cryo-EM structure of Synechocystis sp. PCC 6803 RPitc マップデータ 詳細 試料複合体 : The complex of Synechocystis sp. PCC 6803 RPitcタンパク質・ペプチド : x 6種DNA : x 2種RNA : x 1種リガンド : x 2種 詳細 キーワード Cryo-EM / Synechocystis sp. PCC 6803 / Syn6803 / Transcription initiation / RPitc / Transcription / Cyanobacteria / TRANSCRIPTION-DNA-RNA complex機能・相同性 機能・相同性情報分子機能 ドメイン・相同性 構成要素
sigma factor activity / DNA-directed RNA polymerase complex / DNA-templated transcription initiation / ribonucleoside binding / DNA-directed 5'-3' RNA polymerase activity / DNA-directed RNA polymerase / protein dimerization activity / DNA-templated transcription / magnesium ion binding / DNA binding ... sigma factor activity / DNA-directed RNA polymerase complex / DNA-templated transcription initiation / ribonucleoside binding / DNA-directed 5'-3' RNA polymerase activity / DNA-directed RNA polymerase / protein dimerization activity / DNA-templated transcription / magnesium ion binding / DNA binding / zinc ion binding / cytoplasm 類似検索 - 分子機能 RNA polymerase sigma factor, RpoD-like, cyanobacteria / DNA-directed RNA polymerase, subunit gamma / DNA-directed RNA polymerase subunit RpoC1 / DNA-directed RNA polymerase, subunit beta'' / Sigma-70 factors family signature 1. / RNA polymerase sigma factor RpoD, C-terminal / RNA polymerase sigma factor RpoD / : / RNA polymerase sigma-70 region 1.2 / Sigma-70 factor, region 1.2 ... RNA polymerase sigma factor, RpoD-like, cyanobacteria / DNA-directed RNA polymerase, subunit gamma / DNA-directed RNA polymerase subunit RpoC1 / DNA-directed RNA polymerase, subunit beta'' / Sigma-70 factors family signature 1. / RNA polymerase sigma factor RpoD, C-terminal / RNA polymerase sigma factor RpoD / : / RNA polymerase sigma-70 region 1.2 / Sigma-70 factor, region 1.2 / RNA polymerase sigma-70 region 3 / Sigma-70 region 3 / Sigma-70 factors family signature 2. / RNA polymerase sigma-70 / RNA polymerase sigma-70 region 4 / Sigma-70, region 4 / RNA polymerase sigma-70 region 2 / RNA polymerase sigma-70 like domain / Sigma-70 region 2 / RNA polymerase sigma factor, region 2 / RNA polymerase sigma factor, region 3/4-like / DNA-directed RNA polymerase, omega subunit / DNA-directed RNA polymerase, beta subunit, external 1 domain superfamily / DNA-directed RNA polymerase, beta subunit, external 1 domain / RNA polymerase beta subunit external 1 domain / RNA polymerase, alpha subunit, C-terminal / Bacterial RNA polymerase, alpha chain C terminal domain / DNA-directed RNA polymerase, alpha subunit / DNA-directed RNA polymerase beta subunit, bacterial-type / RNA polymerase, subunit omega/Rpo6/RPB6 / RNA polymerase Rpb6 / RNA polymerase Rpb1, domain 3 superfamily / RPB6/omega subunit-like superfamily / RNA polymerase Rpb1, clamp domain superfamily / RNA polymerase Rpb2, domain 2 superfamily / RNA polymerase Rpb1, domain 3 / RNA polymerase Rpb1, domain 3 / DNA-directed RNA polymerase, subunit beta-prime / RNA polymerase Rpb1, domain 1 / RNA polymerase Rpb1, domain 1 / DNA-directed RNA polymerase, insert domain / DNA-directed RNA polymerase, RpoA/D/Rpb3-type / RNA polymerase Rpb3/RpoA insert domain / RNA polymerase Rpb3/Rpb11 dimerisation domain / RNA polymerases D / RNA polymerase, alpha subunit / RNA polymerase Rpb1, domain 5 / RNA polymerase Rpb1, domain 4 / RNA polymerase Rpb1, domain 2 / RNA polymerase Rpb1, domain 5 / RNA polymerase Rpb1, domain 4 / RNA polymerase, beta subunit, protrusion / RNA polymerase beta subunit / RNA polymerase, N-terminal / RNA polymerase Rpb1, funnel domain superfamily / RNA polymerase I subunit A N-terminus / DNA-directed RNA polymerase, insert domain superfamily / RNA polymerase, RBP11-like subunit / RNA polymerase Rpb2, domain 2 / RNA polymerase Rpb2, domain 2 / RNA polymerase, beta subunit, conserved site / RNA polymerase Rpb2, domain 7 / RNA polymerase Rpb2, domain 3 / RNA polymerase Rpb2, OB-fold / RNA polymerase Rpb2, domain 7 / RNA polymerase Rpb2, domain 3 / RNA polymerases beta chain signature. / DNA-directed RNA polymerase, subunit 2, hybrid-binding domain / DNA-directed RNA polymerase, subunit 2 / DNA-directed RNA polymerase, subunit 2, hybrid-binding domain superfamily / RNA polymerase Rpb2, domain 6 / Winged helix-like DNA-binding domain superfamily 類似検索 - ドメイン・相同性 DNA-directed RNA polymerase subunit alpha / DNA-directed RNA polymerase subunit beta' / DNA-directed RNA polymerase subunit gamma / DNA-directed RNA polymerase subunit omega / RNA polymerase sigma factor SigA / DNA-directed RNA polymerase subunit beta 類似検索 - 構成要素生物種 Synechocystis sp. PCC 6803 (バクテリア) / synthetic construct (人工物) 手法 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度 : 3.13 Å 詳細 データ登録者Shen LQ / You LL / Zhang Y 資金援助 中国, 1件 詳細 詳細を隠すOrganization Grant number 国 Chinese Academy of Sciences 中国
引用ジャーナル : Proc Natl Acad Sci U S A / 年 : 2023タイトル : An SI3-σ arch stabilizes cyanobacteria transcription initiation complex.著者 : Liqiang Shen / Giorgio Lai / Linlin You / Jing Shi / Xiaoxian Wu / Maria Puiu / Zhanxi Gu / Yu Feng / Yulia Yuzenkova / Yu Zhang / 要旨 : Multisubunit RNA polymerases (RNAPs) associate with initiation factors (σ in bacteria) to start transcription. The σ factors are responsible for recognizing and unwinding promoter DNA in all ... Multisubunit RNA polymerases (RNAPs) associate with initiation factors (σ in bacteria) to start transcription. The σ factors are responsible for recognizing and unwinding promoter DNA in all bacterial RNAPs. Here, we report two cryo-EM structures of cyanobacterial transcription initiation complexes at near-atomic resolutions. The structures show that cyanobacterial RNAP forms an "SI3-σ" arch interaction between domain 2 of σ (σ) and sequence insertion 3 (SI3) in the mobile catalytic domain Trigger Loop (TL). The "SI3-σ" arch facilitates transcription initiation from promoters of different classes through sealing the main cleft and thereby stabilizing the RNAP-promoter DNA open complex. Disruption of the "SI3-σ" arch disturbs cyanobacteria growth and stress response. Our study reports the structure of cyanobacterial RNAP and a unique mechanism for its transcription initiation. Our data suggest functional plasticity of SI3 and provide the foundation for further research into cyanobacterial and chloroplast transcription. 履歴 登録 2022年9月27日 - ヘッダ(付随情報) 公開 2023年4月19日 - マップ公開 2023年4月19日 - 更新 2024年10月30日 - 現状 2024年10月30日 処理サイト : RCSB / 状態 : 公開
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