登録情報 データベース : EMDB / ID : EMD-30307 構造の表示 ダウンロードとリンクタイトル Cryo-EM structure of an Escherichia coli RNAP-promoter open complex (RPo) with SspA マップデータ 詳細 試料複合体 : Escherichia coli RNAP-promoter open complex (RPo) with stringent starvation protein A(SspA)DNA : DNA (63-mer)タンパク質・ペプチド : Stringent starvation protein Aタンパク質・ペプチド : DNA-directed RNA polymerase subunit alphaタンパク質・ペプチド : DNA-directed RNA polymerase subunit betaタンパク質・ペプチド : DNA-directed RNA polymerase subunit beta'タンパク質・ペプチド : DNA-directed RNA polymerase subunit omegaタンパク質・ペプチド : RNA polymerase sigma factor RpoDDNA : DNA (63-mer) 残り4件を表示 表示を減らすリガンド : MAGNESIUM IONリガンド : ZINC ION 詳細 キーワード Stringent starvation protein A / RNA polymerase / promoter escape / zinc binding domain / GENE REGULATION / TRANSFERASE-DNA 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
glutathione dehydrogenase (ascorbate) activity / L-ascorbic acid metabolic process / sigma factor antagonist complex / RNA polymerase complex / submerged biofilm formation / cellular response to cell envelope stress / cytosolic DNA-directed RNA polymerase complex / regulation of DNA-templated transcription initiation / sigma factor activity / response to starvation ... glutathione dehydrogenase (ascorbate) activity / L-ascorbic acid metabolic process / sigma factor antagonist complex / RNA polymerase complex / submerged biofilm formation / cellular response to cell envelope stress / cytosolic DNA-directed RNA polymerase complex / regulation of DNA-templated transcription initiation / sigma factor activity / response to starvation / bacterial-type flagellum assembly / glutathione transferase / glutathione transferase activity / bacterial-type flagellum-dependent cell motility / nitrate assimilation / glutathione metabolic process / transcription elongation factor complex / regulation of DNA-templated transcription elongation / transcription antitermination / DNA-templated transcription initiation / cell motility / ribonucleoside binding / DNA-directed 5'-3' RNA polymerase activity / DNA-directed RNA polymerase / response to heat / protein-containing complex assembly / intracellular iron ion homeostasis / protein dimerization activity / response to antibiotic / negative regulation of DNA-templated transcription / DNA-templated transcription / positive regulation of DNA-templated transcription / magnesium ion binding / DNA binding / zinc ion binding / membrane / metal ion binding / cytoplasm / cytosol 類似検索 - 分子機能 Stringent starvation protein A, C-terminal / Stringent starvation protein A, N-terminal / : / RNA polymerase sigma factor 70, non-essential domain / Sigma-70, non-essential region / RNA polymerase sigma factor 70, region 1.1 / Sigma-70 factor, region 1.1 superfamily / Sigma-70 factor, region 1.1 / Glutathione S-transferase, C-terminal domain / Sigma-70 factors family signature 1. ... Stringent starvation protein A, C-terminal / Stringent starvation protein A, N-terminal / : / RNA polymerase sigma factor 70, non-essential domain / Sigma-70, non-essential region / RNA polymerase sigma factor 70, region 1.1 / Sigma-70 factor, region 1.1 superfamily / Sigma-70 factor, region 1.1 / Glutathione S-transferase, C-terminal domain / 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 / Glutathione S-transferase, N-terminal domain / Glutathione transferase family / Glutathione S-transferase, C-terminal / Soluble glutathione S-transferase N-terminal domain profile. / Glutathione S-transferase, C-terminal-like / Soluble glutathione S-transferase C-terminal domain profile. / Glutathione S-transferase, N-terminal / DNA-directed RNA polymerase, omega subunit / Glutathione S-transferase, C-terminal domain superfamily / DNA-directed RNA polymerase, subunit beta-prime, bacterial type / 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 Rpb6 / RNA polymerase, subunit omega/Rpo6/RPB6 / RNA polymerase Rpb6 / RNA polymerase Rpb1, domain 3 superfamily / RNA polymerase Rpb1, clamp domain superfamily / RPB6/omega subunit-like superfamily / DNA-directed RNA polymerase, subunit beta-prime / RNA polymerase Rpb2, domain 2 superfamily / RNA polymerase Rpb1, domain 3 / RNA polymerase Rpb1, domain 3 / RNA polymerase Rpb1, domain 1 / RNA polymerase Rpb1, domain 1 / 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 / DNA-directed RNA polymerase, RpoA/D/Rpb3-type / RNA polymerase Rpb3/RpoA insert domain / RNA polymerase Rpb3/Rpb11 dimerisation domain / RNA polymerases D / 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 / Thioredoxin-like superfamily / Winged helix-like DNA-binding domain superfamily 類似検索 - ドメイン・相同性 DNA-directed RNA polymerase subunit alpha / Stringent starvation protein A / DNA-directed RNA polymerase subunit beta' / RNA polymerase sigma factor RpoD / DNA-directed RNA polymerase subunit alpha / DNA-directed RNA polymerase subunit omega / DNA-directed RNA polymerase subunit beta' / DNA-directed RNA polymerase subunit beta / Stringent starvation protein A / RNA polymerase sigma factor RpoD / DNA-directed RNA polymerase subunit omega 類似検索 - 構成要素生物種 Escherichia coli (大腸菌) / Escherichia coli (strain K12) (大腸菌)手法 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度 : 3.68 Å 詳細 データ登録者Lin W / Feng Y 引用ジャーナル : Nucleic Acids Res / 年 : 2020タイトル : Structural basis for transcription inhibition by E. coli SspA.著者 : Fulin Wang / Jing Shi / Dingwei He / Bei Tong / Chao Zhang / Aijia Wen / Yu Zhang / Yu Feng / Wei Lin / 要旨 : Stringent starvation protein A (SspA) is an RNA polymerase (RNAP)-associated protein involved in nucleotide metabolism, acid tolerance and virulence of bacteria. Despite extensive biochemical and ... Stringent starvation protein A (SspA) is an RNA polymerase (RNAP)-associated protein involved in nucleotide metabolism, acid tolerance and virulence of bacteria. Despite extensive biochemical and genetic analyses, the precise regulatory role of SspA in transcription is still unknown, in part, because of a lack of structural information for bacterial RNAP in complex with SspA. Here, we report a 3.68 Å cryo-EM structure of an Escherichia coli RNAP-promoter open complex (RPo) with SspA. Unexpectedly, the structure reveals that SspA binds to the E. coli σ70-RNAP holoenzyme as a homodimer, interacting with σ70 region 4 and the zinc binding domain of EcoRNAP β' subunit simultaneously. Results from fluorescent polarization assays indicate the specific interactions between SspA and σ70 region 4 confer its σ selectivity, thereby avoiding its interactions with σs or other alternative σ factors. In addition, results from in vitro transcription assays verify that SspA inhibits transcription probably through suppressing promoter escape. Together, the results here provide a foundation for understanding the unique physiological function of SspA in transcription regulation in bacteria. 履歴 登録 2020年6月5日 - ヘッダ(付随情報) 公開 2020年8月12日 - マップ公開 2020年8月12日 - 更新 2024年3月27日 - 現状 2024年3月27日 処理サイト : PDBj / 状態 : 公開
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