登録情報 データベース : EMDB / ID : EMD-48587 ダウンロードとリンクタイトル de novo SigN RNA polymerase transcription initiation intermediate with post-catalytic bEBP state (RPi1 closed ring) マップデータUnsharpened composite map 詳細 試料複合体 : EsNdhsUC1+ATPタンパク質・ペプチド : x 6種DNA : x 2種リガンド : x 6種 詳細 キーワード sigma N / sigma 54 / ATPase / bacterial enhancer binding protein / transcription initiation / intermediate / TRANSCRIPTION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
arginine metabolic process / RNA polymerase complex / DNA-binding transcription activator activity / submerged biofilm formation / cellular response to cell envelope stress / regulation of DNA-templated transcription initiation / sigma factor activity / bacterial-type flagellum assembly / bacterial-type RNA polymerase core enzyme binding / cytosolic DNA-directed RNA polymerase complex ... arginine metabolic process / RNA polymerase complex / DNA-binding transcription activator activity / submerged biofilm formation / cellular response to cell envelope stress / regulation of DNA-templated transcription initiation / sigma factor activity / bacterial-type flagellum assembly / bacterial-type RNA polymerase core enzyme binding / cytosolic DNA-directed RNA polymerase complex / bacterial-type flagellum-dependent cell motility / nitrate assimilation / phosphorelay signal transduction system / cis-regulatory region sequence-specific DNA binding / nucleotidyltransferase activity / transcription elongation factor complex / regulation of DNA-templated transcription elongation / transcription antitermination / DNA-templated transcription initiation / cell motility / protein-DNA complex / ribonucleoside binding / DNA-directed RNA polymerase / DNA-directed RNA polymerase activity / response to heat / protein-containing complex assembly / intracellular iron ion homeostasis / transcription cis-regulatory region binding / protein dimerization activity / response to antibiotic / regulation of DNA-templated transcription / positive regulation of DNA-templated transcription / magnesium ion binding / ATP hydrolysis activity / DNA binding / zinc ion binding / ATP binding / metal ion binding / identical protein binding / membrane / cytosol / cytoplasm 類似検索 - 分子機能 Sigma-54 factors family signature 1. / RNA polymerase sigma factor 54, core-binding domain / RNA polymerase sigma factor 54, DNA-binding / RNA polymerase sigma-54 factor, core-binding domain superfamily / Sigma-54 factor, Activator interacting domain (AID) / Sigma-54, DNA binding domain / Sigma-54 factor, core binding domain / Sigma-54 factors family signature 2. / Sigma-54 factors family profile. / RNA polymerase sigma factor 54 ... Sigma-54 factors family signature 1. / RNA polymerase sigma factor 54, core-binding domain / RNA polymerase sigma factor 54, DNA-binding / RNA polymerase sigma-54 factor, core-binding domain superfamily / Sigma-54 factor, Activator interacting domain (AID) / Sigma-54, DNA binding domain / Sigma-54 factor, core binding domain / Sigma-54 factors family signature 2. / Sigma-54 factors family profile. / RNA polymerase sigma factor 54 / Sigma-54 interaction domain ATP-binding region A signature. / Sigma-54 interaction domain, ATP-binding site 1 / Sigma-54 interaction domain, ATP-binding site 2 / Sigma-54 interaction domain ATP-binding region B signature. / Sigma-54 interaction domain profile. / Sigma-54 interaction domain / RNA polymerase sigma factor 54 interaction domain / DNA binding HTH domain, Fis-type / Bacterial regulatory protein, Fis family / Response regulator receiver domain / cheY-homologous receiver domain / Signal transduction response regulator, receiver domain / Response regulatory domain profile. / CheY-like superfamily / DNA-directed RNA polymerase, omega subunit / 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 / DNA-directed RNA polymerase, subunit beta-prime / RNA polymerase Rpb6 / RNA polymerase, subunit omega/Rpo6/RPB6 / RNA polymerase Rpb6 / RNA polymerase Rpb2, domain 2 superfamily / RNA polymerase Rpb1, domain 3 superfamily / RPB6/omega subunit-like superfamily / 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 Rpb1, clamp domain superfamily / RNA polymerase Rpb1, domain 3 / RNA polymerase Rpb1, domain 3 / Homeobox-like domain superfamily / RNA polymerase Rpb1, domain 1 / RNA polymerase, beta subunit, protrusion / RNA polymerase beta subunit / RNA polymerase Rpb1, domain 1 / RNA polymerase, alpha subunit / RNA polymerase Rpb1, domain 5 / RNA polymerase Rpb1, domain 4 / DNA-directed RNA polymerase, insert domain superfamily / RNA polymerase Rpb1, domain 2 / RNA polymerase Rpb1, domain 5 / RNA polymerase Rpb1, domain 4 / RNA polymerase Rpb2, domain 2 / RNA polymerase Rpb2, domain 2 / RNA polymerase, RBP11-like subunit / RNA polymerase, N-terminal / RNA polymerase Rpb1, funnel domain superfamily / RNA polymerase I subunit A N-terminus / 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 / ATPases associated with a variety of cellular activities / AAA+ ATPase domain / P-loop containing nucleoside triphosphate hydrolase 類似検索 - ドメイン・相同性 Transcriptional regulator (NtrC family) / DNA-directed RNA polymerase subunit alpha / DNA-directed RNA polymerase subunit omega / DNA-directed RNA polymerase subunit beta' / DNA-directed RNA polymerase subunit beta / RNA polymerase sigma-54 factor 類似検索 - 構成要素生物種 Escherichia coli (大腸菌) / Aquifex aeolicus VF5 (バクテリア)手法 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度 : 2.6 Å 詳細 データ登録者Mueller AU / Darst SA 資金援助 米国, 2件 詳細 詳細を隠すOrganization Grant number 国 National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS) R35 GM118130 米国 Life Sciences Research Foundation Agouron Institute 米国
引用ジャーナル : Nat Commun / 年 : 2025タイトル : Real-time capture of σ transcription initiation intermediates reveals mechanism of ATPase-driven activation by limited unfolding.著者 : Andreas U Mueller / Nina Molina / B Tracy Nixon / Seth A Darst / 要旨 : Bacterial σ factors bind RNA polymerase (E) to form holoenzyme (Eσ), conferring promoter specificity to E and playing a key role in transcription bubble formation. σ is unique among σ factors in ... Bacterial σ factors bind RNA polymerase (E) to form holoenzyme (Eσ), conferring promoter specificity to E and playing a key role in transcription bubble formation. σ is unique among σ factors in its structure and functional mechanism, requiring activation by specialized AAA+ ATPases. Eσ forms an inactive promoter complex where the N-terminal σ region I (σ-RI) threads through a small DNA bubble. On the opposite side of the DNA, the ATPase engages σ-RI within the pore of its hexameric ring. Here, we perform kinetics-guided structural analysis of de novo formed Eσ initiation complexes and engineer a biochemical assay to measure ATPase-mediated σ-RI translocation during promoter melting. We show that the ATPase exerts mechanical action to translocate about 30 residues of σ-RI through the DNA bubble, disrupting inhibitory structures of σ to allow full transcription bubble formation. A local charge switch of σ-RI from positive to negative may help facilitate disengagement of the otherwise processive ATPase, allowing subsequent σ disentanglement from the DNA bubble. 履歴 登録 2025年1月9日 - ヘッダ(付随情報) 公開 2025年8月13日 - マップ公開 2025年8月13日 - 更新 2025年8月13日 - 現状 2025年8月13日 処理サイト : RCSB / 状態 : 公開
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